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Free interactive personal-finance calculators that run entirely client-side, for people who don't want their financial data leaving their device, instead of clunky table-based calculators.
FreeNo sign-upData stays with you
What to know▼
How it works
Runs 100% client-side; visual charts for savings, debt payoff (Snowball vs Avalanche), FIRE retirement simulation
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Free, browser-only financial calculators (mortgage, debt, retirement) that never send your numbers to a server.
FreeNo sign-up
What to know▼
How it works
25 interactive calculators for mortgages, debt payoff, savings, and retirement that run entirely in your browser, showing the assumptions behind each result.
What's different
Numbers never leave your browser, and each result states its assumptions next to it; can be embedded on any site with one line of HTML.
Pricing
Free.
Best for
People who want to run financial calculations without sending their numbers to a server, or site owners embedding calculators.
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A dead-simple expense tracker: type a shorthand phrase like 'coffee 12' and it's logged and categorized instantly. Data stays on your phone, with no bank linking or account required.
Watch out · Because there's no bank linking, entries rely on you remembering to type them rather than automatic transaction capture.
No sign-upData stays with youNo ads
What to know▼
How it works
Type a shorthand phrase like 'coffee 12' and it's instantly logged and categorized as an expense.
What's different
No bank linking, no signup and no ads — data stays on your phone rather than syncing to a server.
Pricing
No signup required.
Best for
People who want expense tracking simple enough to actually stick with, without linking a bank account.
Watch out
Because there's no bank linking, entries rely on you remembering to type them rather than automatic transaction capture.
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A budget tracker that runs its AI models entirely on your Android phone, so your spending and income never leave the device — free, no account, no ads, no tracking.
FreeNo sign-upWorks offline
What to know▼
How it works
Tracks income and spending using five AI models that run entirely on the Android device itself, from a 135M-parameter model up to Phi-4 Mini 3.8B, plus a tax engine covering 45 countries.
What's different
Unlike other AI finance apps that send your salary and spending to a server, the models run on-device so financial data never leaves the phone.
Pricing
Free on Android.
Best for
Android users who want AI-assisted budgeting without sending financial data to a company's server.
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Free 60-second financial health grader covering income, savings, debt and net worth, entirely in-browser.
FreeNo sign-up
What to know▼
How it works
Grades financial health across income, savings rate, debt, emergency fund, and net worth using a transparently published formula, then gives a ranked plan to raise the score.
What's different
No sign-up or bank connection — calculations run entirely in the browser, nothing stored.
Pricing
Free forever, with an optional Pro tier for deeper tracking and saved scenarios.
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Free gross-to-net salary, VAT, and finance calculators for 28 European countries, with side-by-side comparisons, PDF export, and no signup.
FreeNo sign-upCan export my data
What to know▼
How it works
Calculates take-home pay, VAT, self-employed and hourly rates, and other finance scenarios using official 2026 rates for 28 European countries, with charts and PDF export.
Pricing
Free, no signup.
Best for
People comparing pay or savings scenarios across European countries.
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An on-device subscription tracker with a one-time lifetime unlock instead of a cloud account or recurring fee.
Watch out · No account, no bank connection, no cloud.
No sign-upWorks offlineNo subscription
What to know▼
How it works
Tracks subscriptions, trials, and recurring bills entirely on-device, showing monthly/yearly costs and catching trials before they convert, with local renewal reminders.
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A free, no-signup toolkit of finance calculators and everyday utilities, plus an AI money assistant, aimed at users in India, the US, and the UK.
FreeNo sign-up
What to know▼
How it works
35+ finance calculators (SIP, EMI, tax, loans), 40+ everyday tools like PDF and image utilities, and a free AI money assistant, all running privately in the browser.
Pricing
Free, no signup.
Best for
Individuals in India, the US, or the UK doing quick finance calculations.
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An offline subscription tracker with no bank linking, account or cloud sync, for anyone tracking recurring costs without handing over financial data, not just developers.
Watch out · Built solo by a self-taught developer using AI-assisted workflows, with no team or funding behind it.
No sign-upWorks offlineData stays with you
What to know▼
How it works
Tracks subscriptions, renewal dates and costs entirely on-device across 170+ currencies, with no account, bank linking or cloud sync.
What's different
Skips bank login entirely, unlike most subscription trackers.
Best for
People who want to track recurring spending without handing over financial data.
Watch out
Built solo by a self-taught developer using AI-assisted workflows, with no team or funding behind it.
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Grades 150+ countries A+ to F for affordability, safety, weather and flights — affordability blends World Bank PPP data with live exchange rates, safety pulls from three governments' travel advisories, plus a budget filter and 176 country guides. Free, no sign-up.
FreeNo sign-up
What to know▼
What's different
Built solo in Python's standard library with zero dependencies.
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A net worth tracker for FIRE-minded people who manually enter balances quarterly instead of linking bank accounts, with FI-number and Coast FIRE math built in.
FreeNo sign-upWorks offline
What to know▼
How it works
Manually type in account balances periodically; the app computes net worth trends and FI/Coast-FIRE numbers
What's different
Never links to your bank accounts
Pricing
Free, no signup required to try
Best for
People pursuing FIRE who want a spreadsheet replacement without connecting bank data
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Free browser calculator showing the exact investment amount and year needed to make work optional, across FIRE variants.
Watch out · Runs in the browser, no account required.
FreeNo sign-up
What to know▼
How it works
Calculates the exact investment amount and year needed for expenses to be covered indefinitely, covering Standard, Coast, Barista, Lean and Fat FIRE plus a safe-withdrawal-rate tool.
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An iOS/Apple Watch app that tracks subscriptions and recurring bills with local, private data and reminders to avoid surprise charges.
Watch out · iOS and Apple Watch.
No sign-upWorks offlineData stays with you
What to know▼
How it works
Tracks subscriptions, recurring bills, and automatic payments in one dashboard with smart reminders, widgets, and Apple Watch support, storing data privately on-device.
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Splits shared bills among friends and works out the fewest payments needed to settle up, entirely on-device with no account; supports 150+ currencies and 11 languages.
FreeNo sign-upWorks offline
What to know▼
How it works
Add who paid for a shared bill and it calculates who owes whom, along with the fewest payments needed to settle up.
What's different
Everything stays on-device with no account and no ads, works offline, and supports 150+ currencies and 11 languages.
Pricing
Free, no account.
Best for
Groups of friends splitting shared expenses who want a private, offline tool.
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Private expense tracker based on the 50/30/20 budgeting rule, no login, one-time payment.
No sign-upData stays with youPay once
What to know▼
How it works
Tracks expenses around the 50/30/20 budgeting rule with smart budgeting, monthly insights, recurring transactions and PDF export, storing data only on the device.
Pricing
One-time payment, no subscription.
Best for
People wanting a private expense tracker with no login.
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Saves screenshots and shared content from any app into one categorized, on-device library using Apple Intelligence.
Watch out · Relies on on-device Apple Intelligence.
No sign-upWorks offlineNo subscription
What to know▼
How it works
Lets you share content from any app's share sheet into one place — title and image are grabbed automatically, and on-device Apple Intelligence sorts it into a category; browse by category, add tags, or use 'Daily Review' to resurface saves.
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A no-signup calculator estimating monthly burn, runway and break-even income for remote workers and freelancers comparing nomad destinations before they move.
No sign-up
What to know▼
How it works
Calculates monthly burn, runway and break-even income, letting you compare rough planning costs across popular remote-work destinations before you choose where to move.
Pricing
No signup required.
Best for
Remote workers, freelancers and indie makers planning where to live next and what it will cost.
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Compares live exchange rates and fees across six money-transfer providers so you see the real amount your recipient gets, not the advertised rate — built for expats sending money home.
FreeNo sign-up
What to know▼
How it works
Compares live exchange rates and fees from six providers (Wise, Remitly, Western Union, XE, WorldRemit, Unplex) across 13 currency corridors, updated every 30 minutes, showing the amount the recipient actually gets after all fees; includes rate alerts and requires no signup.
What's different
Surfaces the real received amount rather than the advertised rate, since it says providers often hide profit in the exchange-rate margin rather than a stated fee.
Pricing
Free, no account required.
Best for
NRIs, OFWs and expats sending money home who want to pick the cheapest provider for a specific currency corridor.
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A free set of financial calculators covering interest, FIRE, retirement, and loans, offered in six languages.
Watch out · Currency and sources adapt by country; available in English, Spanish, French, Italian, German, and Hindi.
FreeNo sign-up
What to know▼
How it works
Covers compound interest with monthly contributions, future value, real return, FIRE, retirement, loan amortization, debt payoff, and rent-vs-buy, each explained step by step showing how the result builds over time.
Pricing
Free, no signup.
Watch out
Currency and sources adapt by country; available in English, Spanish, French, Italian, German, and Hindi.
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A free Chrome extension that lists every subscription you pay for and warns you before renewals, with no bank linking, no sign-up, and no data leaving your browser.
FreeNo sign-upData stays with you
What to know▼
How it works
A Chrome extension that lists every subscription you pay for, shows total monthly and yearly spend on a dashboard, and sends renewal reminders before a subscription renews.
What's different
Works without linking your bank account or signing up, with no data leaving your browser.
Pricing
Free.
Best for
People who want to track subscription spending and avoid surprise renewals without connecting their bank.
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A collection of 37+ free online calculators covering crypto DCA simulation, gold price, income tax, loan EMI, and other utility math, with no signup required.
FreeNo sign-up
What to know▼
How it works
Free calculators for finance and everyday utility tasks, including a crypto DCA simulator, gold price calculator, FBR income tax tool, and loan EMI calculator.
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A free collection of browser-based financial calculators for US and UK users, covering stamp duty, capital gains, inheritance tax, mortgages, retirement, salary, loans, and dividends.
FreeNo sign-upNo ads
What to know▼
How it works
All calculations run in the browser; no sign-up and no ad interruptions.
Pricing
Free.
Best for
US and UK users estimating taxes, mortgage affordability, or retirement savings.
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A free library of over 100 browser calculators, converters and utilities spanning finance, health, SEO and text tasks, no login needed. A general toolbox site, not built for any one profession.
FreeNo sign-up
What to know▼
How it works
A library of over 100 free browser-based calculators, converters and utilities covering finance, unit conversion, health monitoring, developer tools, SEO analysis and text manipulation, with no login required.
Pricing
Free.
Best for
Anyone needing a quick general-purpose calculator or converter without signing up.
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An Android app that tracks your free trials and subscriptions on-device and reminds you before you get charged, with no account or bank connection required.
No sign-upData stays with youNo tracking
What to know▼
How it works
Add trials/subscriptions manually, get reminders before charges hit
What's different
No account, no bank connection, everything stays on-device
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125 free client-side financial calculators (mortgages, loans, tax, investing, debt payoff) that run entirely in your browser with nothing sent to a server.
FreeNo sign-up
What to know▼
How it works
125 calculators run client-side in the browser, plus short finance-news guides with worked examples
What's different
embeddable calculators for other sites; runs entirely client-side so no data leaves your browser
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A free suite of 70+ browser-based financial calculators that run locally without signup.
FreeNo sign-upNothing to install
What to know▼
How it works
70+ browser-based financial calculators covering growth, retirement, mortgage, debt, tax, budgeting, and investing, all running locally with nothing sent to a server.
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A free calculator suite for everyday money decisions like SIP, EMI, tax and compound interest, with no signup and no push to open an account.
FreeNo sign-up
What to know▼
How it works
A free suite of calculators for everyday money decisions — SIP, EMI, income tax, compound interest, PPF, FIRE and more — giving instant results without signup.
Pricing
Free, no signup required.
Best for
People who want to run the numbers on a financial decision without opening an account with a finance app.
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A free, no-login personal finance toolkit for tax, SIP, EMI, HRA, retirement, FIRE, and decisions like Rent vs Buy, with all inputs kept on your device.
FreeNo sign-upData stays with you
What to know▼
How it works
Offers calculators and planning tools for taxes, investments (SIP), loans (EMI), retirement/FIRE, and comparisons like Rent vs Buy or Prepay vs Invest, all without an account and without uploading your data.
Pricing
Free.
Best for
People who want private, no-login personal finance calculators for Indian financial decisions.
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A free, open-source calculator that tells you whether paying off debt or investing wins after taxes, using 2026 U.S. federal and state tax rules instead of a simple pre-tax rate comparison.
FreeNo sign-upOpen source
What to know▼
How it works
Applies 2026 federal brackets, NIIT, and state tax treatment to compare options like a HYSA, T-Bills, stocks, or IRAs against paying off a car or student loan, with shareable links.
What's different
Compares after-tax returns rather than the pre-tax rate comparison most calculators use.
Pricing
Free, open source, no signup.
Best for
anyone deciding whether to pay off a loan or invest extra money.
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A free loan calculator showing your monthly payment, total interest, and how extra payments would save, for people trying to understand or pay off debt.
FreeNo sign-up
What to know▼
How it works
Enter a loan amount, interest rate, and term to see the monthly payment, total interest paid, and how much extra payments each month would save.
Pricing
Free, no signup.
Best for
People trying to understand their loan costs or pay off debt faster.
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A free, transparent set of take-home pay, mortgage, loan, and salary calculators for US workers (plus Canada, UK, and Australia) using current IRS brackets and state tax data, with no signup or paywall.
FreeNo sign-upNo ads
What to know▼
How it works
Applies current IRS brackets, state tax rates, and FICA data, updated annually, with methodology and sources documented on every page.
What's different
Documents its tax-rate sources and methodology on every calculator page.
Pricing
Free, no signup, no paywall.
Best for
US workers who want an accurate take-home pay or mortgage estimate without ads or a paywall.
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A free calculator that compares local rent and home-buying numbers to show which option makes more financial sense, instead of guessing at a big decision.
FreeNo sign-up
What to know▼
How it works
Takes rent cost, home price, mortgage rate, and down payment and returns a personalized rent-vs-buy breakdown.
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Splits shared expenses across recurring friend groups and trips, with AI receipt scanning, WhatsApp logging and offline mode that syncs when reconnected.
No sign-upWorks offlineNo ads
What to know▼
How it works
You create one group per friend circle, and every dinner, trip, or outing becomes an event inside it, with AI receipt scanning and settlement suggestions, expense logging via WhatsApp, multi-currency support, offline mode that syncs when reconnected, guest members with no account needed, and one-tap payment via Venmo or PayPal.
What's different
Organized around an ongoing friend group rather than a single trip, so history carries across every dinner and trip together.
Pricing
Free to start, no ads, no data selling.
Best for
Recurring friend groups splitting expenses across many dinners and trips over time.
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A free set of everyday calculators — income tax, take-home pay, mortgage, sales tax, BMI, calories, investment growth — for US and Canada, aimed at individuals, not businesses.
FreeNo sign-up
What to know▼
How it works
A set of calculators for the US and Canada covering income tax by province/state, take-home pay, mortgage, sales tax, BMI, calories and investment growth, using 2026 rates.
Pricing
Free, no sign-up.
Best for
Individuals in the US or Canada who want quick personal finance and health calculations.
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A fully offline expense tracker with no account and no cloud sync — your spending data never leaves your device, a simple personal budgeting tool for privacy-conscious users.
No sign-upWorks offline
What to know▼
How it works
A fully offline expense tracker that stores all spending data locally on the device, with no cloud sync and no account creation.
What's different
No cloud syncing, no account, no data tracking — everything stays on-device, unlike complex online-only budgeting apps.
Best for
Privacy-conscious people who want a simple, distraction-free way to track monthly or daily spending.
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A personal budgeting and expense-tracking app that uses streaks, points, and daily engagement instead of strict categories or fully automatic bank syncing.
No sign-up
What to know▼
How it works
log spends in seconds with no sign-up, budget on your actual pay cycle, and earn streaks and challenges for logging regularly
Best for
people who've quit stricter or fully automatic budgeting apps because the habit never stuck
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Browser-only debt payoff planner that turns your numbers into a specific debt-free date, with no account, no subscription, and no data leaving the browser.
No sign-upNo subscription
What to know▼
How it works
Calculates a debt-free date from your inputs entirely client-side.
Pricing
No subscription.
Best for
people who don't know where to start paying off debt.
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A subscription cost tracker you fill in by hand — no bank link, no account, nothing shared — shows your monthly burn and renewals as a Notion template or standalone app.
No sign-up
What to know▼
How it works
You manually enter what you pay for each subscription; it shows your monthly burn, upcoming renewals, and which categories are draining your budget.
What's different
No bank account connection required — everything is typed in by hand.
Best for
People who want to track subscription spend without linking a bank account, as a Notion template or standalone download.
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An offline expense tracker with on-device receipt OCR and voice input, requiring no bank connection or account.
Watch out · No account or bank connection required; data stays on device.
FreeNo sign-upWorks offline
What to know▼
How it works
Track expenses with manual entry, voice input, or on-device OCR receipt scanning, with budgets, insights, anomaly detection, optional Google Drive backup, and PDF/CSV export.
Pricing
Free; premium unlocks voice AI categorization, receipt scanning, PDF export, and advanced insights.
Watch out
No account or bank connection required; data stays on device.
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Compares Swiss municipalities by taxes, health insurance, rent or purchase prices and commute times to help you find where to move, and checks whether a listing is priced fairly. Free, no login.
FreeNo sign-up
What to know▼
How it works
Enter your income, family situation and workplace to get a ranked list of Swiss municipalities compared by tax burden, health insurance cost, rent/purchase prices, education level and commute time. It can also check whether a specific rental or purchase listing is priced fairly against the local market.
What's different
Combines multiple cost-of-living factors (tax, insurance, housing, commute) into one ranked comparison, plus a listing-price fairness check.
Pricing
Free, no login required.
Best for
People moving to or relocating within Switzerland who want to compare municipalities by real cost.
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An expense tracker and budget manager that runs on-device with AI, so you don't have to create a cloud account or link your bank details to a third party.
FreeNo sign-upWorks offline
What to know▼
How it works
An expense tracker and budget manager that runs 100% locally on your device, using on-device AI for spending analysis, anomaly detection, and end-of-month balance predictions — no cloud account or bank credentials required. Includes a zero-based budget mode.
What's different
Unlike traditional budgeting tools, it never requires linking bank credentials or creating a cloud account; all AI processing happens on-device.
Pricing
Free.
Best for
People who want budgeting features and AI insights without sharing bank login details or account data with a third party.
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A free collection of personal finance calculators (rent vs. buy, credit building, debt payoff) that give a direct numeric answer from your own numbers without requiring signup.
FreeNo sign-up
What to know▼
How it works
Enter your own numbers into calculators covering common money decisions to get a direct answer instead of a generic "it depends" article.
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A free calculator that converts a merchant cash advance factor rate into an equivalent APR so borrowers can compare it against bank or SBA loan offers.
FreeNo sign-up
What to know▼
How it works
Enter a factor rate and term to see total repayment, total fee, equivalent APR, and estimated daily payment.
Pricing
Free, no signup, no email required.
Best for
Business owners comparing MCA offers to traditional loans.
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A private personal budgeting app that runs entirely locally in your browser with no signup, subscription or data upload, instead of a cloud-based budgeting service.
No sign-upWorks offlineData stays with you
What to know▼
How it works
runs fully locally in the browser, keeping all budgeting data on-device with no account or subscription required.
Best for
individuals who want personal budgeting without sending financial data to a server.
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A free suite of 20+ US financial calculators (mortgage, auto, personal, student, FHA/VA, HELOC, business/SBA loans) that runs entirely in the browser without storing data or requiring signup.
FreeNo sign-up
What to know▼
How it works
Instant browser-side calculations for various US loan and financial scenarios; no data is stored.
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A free suite of financial calculators for India covering SIP, EMI, income tax, FIRE, NPS, EV-vs-petrol, and rent-vs-buy comparisons, with no signup required.
FreeNo sign-up
What to know▼
How it works
Offers over 40 free financial calculators for India, including SIP, EMI, income tax, FIRE, NPS, EV vs petrol, and rent vs buy.
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A free, independent comparator for Argentina's UVA mortgages that shows the true monthly cost across 14 banks using official BCRA data, instead of relying on each bank's advertised rate.
FreeNo sign-up
What to know▼
How it works
Compares the true financial cost (CFT) and real monthly payment across all 14 banks using official BCRA data.
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Free live currency converter with real-time mid-market rates for 160+ currencies — historical charts, an inflation calculator, forex guides and rate alerts, no signup.
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Tracks every subscription in one place without a bank connection — trial reminders before you're charged, a renewal calendar, budgets, spending insights, a health score to spot zombie subscriptions, and 50+ cancel guides. Fully on-device, no login.
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Free privacy-first salary tools — calculate a raise, convert salary to hourly, check a raise against inflation, and compare two job offers, all in your browser with nothing stored.