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A market screener that tracks real-time prices for over 320,000 trading cards across Pokemon, One Piece, MTG, Yu-Gi-Oh, Dragon Ball, Lorcana, Weiss Schwarz, and Digimon, with PSA grading data and a portfolio tracker.
What to know▼
How it works
Tracks card prices, PSA grading data, and market cap; includes a portfolio tracker.
Pricing
Free to start.
Best for
Trading card collectors and investors wanting to track their collection's value.
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A community-maintained database tracks stock and group-buy status for 300+ mechanical keyboards and switches, for hobbyists watching for restocks or drops.
What to know▼
How it works
A community-curated database tracks stock and group-buy status across a catalog of 300+ mechanical keyboards and 300+ switches.
Best for
Mechanical keyboard hobbyists watching for restocks or upcoming group-buy drops.
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A fully offline fishing journal for logging trips, catches, spots, and tackle, with searchable history and exportable backups instead of cloud sync or an account.
Watch out · No account, ads, analytics, tracking, cloud sync, or location permission.
No sign-upWorks offlineCan export my data
What to know▼
How it works
A fully offline fishing journal for recording trips, catches, spots, species, tackle, weight, length, and notes, with searchable history and exportable backups.
Watch out
No account, ads, analytics, tracking, cloud sync, or location permission.
We check every product on this page once a day and record whether it still answers.
Tracks and values Pokémon and One Piece cards using real closed-sale prices instead of seller asking prices, with camera scanning and a deal radar for underpriced cards.
What to know▼
How it works
Scan a card with your camera, follow value over time, set price alerts, deal radar for below-market cards.
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Wine scanner and collection tracker for iPhone — photograph a label to identify the wine, producer, vintage, region, market value, critic scores and food pairings, organized into a searchable collection with a 3D rack map.
What to know▼
How it works
Photograph a bottle label; Cellar identifies the wine and its details, then adds it to a 3D-mapped collection. Imports from CellarTracker, Vivino, or CSV.
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A phone app that scans a Pokémon card and instantly shows its current market price, price history, and trend, with batch scanning for whole binders.
Free
What to know▼
How it works
Scans a card and pulls live TCGplayer market price, a 90-day price history chart, and 7/30-day trends; batch mode scans an entire binder into a saved collection.
Pricing
Free on iOS and Android.
Best for
Pokémon card collectors checking or tracking collection value.
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Converts any photo into a buildable Perler bead pattern with adjustable grid and palette, processed entirely in-browser so images never leave your device.
Watch out · Image processing stays local — never uploaded.
Data stays with youCan export my data
What to know▼
How it works
Adjust grid, palette, color count; preview beads and export a material list.
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An iOS/iPadOS satellite tracker with real-time positions, frequency access, pass logging and a night-vision mode, for people tracking satellites outdoors.
Watch out · iOS/iPadOS only.
What to know▼
How it works
Tracks satellites in real time on iOS/iPadOS, with access to frequencies and pass logging built into the app.
What's different
Designed for clear, fast outdoor use with deep iOS integration, a night-vision mode, and support for multiple languages.
Best for
People tracking satellites outdoors in real-world conditions rather than just looking up pass times.
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Converts an uploaded 3D model into a buildable brick design entirely in the browser, with an exportable parts list, without the file leaving your device.
FreeNo sign-upData stays with you
What to know▼
How it works
Upload an STL/OBJ/GLB/PLY file, compare original and brick versions in 3D, tune size/colors/brick inventory, then export a parts list and layer-by-layer build guide.
What's different
Processing happens locally; the model never leaves your device.
Pricing
Free.
Best for
People designing physical brick builds from a 3D model who want privacy and no signup.
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A standalone Android app that uses NFC tags to track and update 3D-printer filament spool weights with a phone scan — a one-time purchase for hobbyists, no server setup.
Pay onceNo subscription
What to know▼
How it works
A standalone Android app that uses affordable NFC tags to instantly track and update 3D-printer filament spool weights with a phone scan.
What's different
No server or Docker setup required, unlike other spool-tracking systems — built for stock printers like Bambu, Prusa, and Anycubic.
Pricing
One-time purchase, no subscriptions or ads.
Best for
3D-printing hobbyists on stock printers who want simple filament tracking without running their own server.
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Tracks sports/trading card values from real sold prices and finds underpriced eBay listings and grading ROI, for collectors who want to treat their hobby as an investment.
What to know▼
How it works
Real sold prices across 10.9M+ cards, Workbench finds underpriced eBay listings, Grading ROI Engine ranks cards by expected return.
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A location-based bird identification quiz using live eBird data, photos, and leaderboards.
What to know▼
How it works
A location-based bird identification quiz powered by live eBird data, testing taxonomy knowledge through high-resolution photos and field marks, with global and regional leaderboards.
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A social network just for car and motorcycle enthusiasts to show off vehicles, find events and routes, and connect with other owners, instead of scattering that across generic apps and forums.
What to know▼
How it works
A social network for car and motorcycle enthusiasts to build a virtual garage showcasing their vehicles, find local events, discover driving routes, and connect with other owners.
What's different
Built entirely around car and motorcycle culture from the ground up, instead of treating it as one interest tag on a general social platform.
Best for
Car and motorcycle owners who currently piece together their hobby across separate apps, forums and social pages.
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Turns travel photos into collectible ticket-style keepsakes with smart color matching, stored locally only.
No sign-upCan export my data
What to know▼
How it works
Transforms travel photos into ticket-style keepsakes — pick a layout, add city/date/notes/ticket number, and smart color extraction matches the design to the photo; browse in a timeline gallery and export high-resolution PNGs.
What's different
Everything stays local — no account, ads, or analytics.
Best for
Travelers wanting to keep collectible mementos of trips.
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A site tracking trading card pull rates and market prices, currently covering the Riftbound card game.
Watch out · Currently only covers the Riftbound trading card game.
What to know▼
How it works
Tracks trading card game pull rates and box odds backed by cited data, set composition, daily TCGplayer market prices, and community opening statistics with published sample sizes.
Watch out
Currently only covers the Riftbound trading card game.
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A mobile card scanner for Pokémon/TCG collectors that identifies cards and shows live marketplace prices.
What to know▼
How it works
Scans a Pokemon/TCG card with the phone camera to identify it instantly, check live prices from eBay, TCGplayer, and Cardmarket, track collection value, organize binders, and follow master set progress.
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A watch database that scores over 51,000 watches across 40+ spec fields to find genuine alternatives to a given watch, plus collection tracking and price-drop alerts.
What to know▼
How it works
Matches watches by case, dial, movement, and bracelet specs, searchable by plain-English description or photo upload, and tracks price drops.
Best for
Watch buyers looking for a real alternative to a specific model, not just a cheaper lookalike.
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Purely artistic shader-based recreation of a historic mechanical ring — a technical demo piece, not a utility product.
What to know▼
How it works
An interactive digital reconstruction of a 17th-century Gimmel wedding ring, built entirely in a single GLSL fragment shader using mathematical raymarching, with fluid kinematic unfolding mechanics and procedural enamel monograms rendered at 60 FPS.
What's different
No 3D models, image textures, or external canvas assets — the entire ring is procedurally rendered math inside one shader.
Best for
People interested in shader art and technical graphics demos rather than a practical utility.
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A mobile app where you tap to 'mine' coins and invite friends for daily rewards — an app-based referral reward scheme, not actual cryptocurrency mining.
Watch out · This is an app-based referral/reward scheme rather than actual cryptocurrency mining - no hardware or real mining is involved.
What to know▼
How it works
A mobile app where you tap to 'mine' coins, invite friends, and earn daily rewards and bonuses.
Watch out
This is an app-based referral/reward scheme rather than actual cryptocurrency mining - no hardware or real mining is involved.
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A free random-object generator with no signup, useful for brainstorming, games, or classroom prompts — a general idea tool, not built specifically for teachers.
FreeNo sign-up
What to know▼
How it works
A random object generator (more tools planned) that runs with no signup, usable for drawing ideas, creative prompts, classroom activities or brainstorming.
Pricing
Completely free.
Best for
People needing quick random prompts for games, brainstorming or classroom activities.
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Points your iPhone camera at the sky and overlays live flight data on real aircraft above you — for plane spotters and aviation enthusiasts, not industry professionals.
What to know▼
How it works
An AR app that overlays live flight data on nearby aircraft when you point your iPhone camera at the sky.
Best for
Plane spotters, aviation fans, and travelers who want to identify what's flying overhead.
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A set of open-source tools that simplify microcontroller prototyping for interactive projects — for hobbyist makers and hardware tinkerers, free forever.
FreeOpen source
What to know▼
How it works
A set of tools that simplify getting started with microcontroller prototyping for interactive projects.
Pricing
Free forever, fully open-source.
Best for
Hobbyist makers and hardware tinkerers prototyping interactive electronics.
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Sends real-time restock alerts across major retailers for hard-to-find items like Pokemon cards, Labubu figures, and GPUs, so you can buy before they sell out.
No ads
What to know▼
How it works
Customizable watchlists with push notifications when items restock
Best for
Collectors chasing limited-stock items like GPUs, Pokemon TCG, or Labubu
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A tracking app for plane-spotting hobbyists to log spotted aircraft, browse curated collections, and use airport data to plan spotting trips.
What to know▼
How it works
Helps plane spotters discover curated aircraft collections, track their spotting progress, and use airport intelligence to plan their next spotting trip.
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A collection management platform for watch collectors
What to know▼
How it works
Tracks a watch collection against a manually verified reference database (500+ references) organized by brand, variant, and reference; available as a web app now, with iOS and Android in beta.
What's different
Every spec is hand-checked rather than crowdsourced.
Best for
Watch collectors who want accurate, structured records instead of spreadsheets.
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A DePIN sensor network where you run a node on an ESP32 device to measure local internet, power grid and climate conditions and earn a token in return.
What to know▼
How it works
Runs on ESP32 hardware nodes that report to a live map, with edge automation.
Best for
People who want to run a physical sensor node for a decentralized network and earn tokens.
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Lets you plug UVC cameras, borescopes, microscopes and capture cards into an Android or HarmonyOS phone for driverless live preview, photos and video.
What to know▼
How it works
Lets you plug UVC cameras, borescopes, microscopes, and capture cards directly into an Android or HarmonyOS device for live preview, photos, and video recording.
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Gamified beer-logging app: scan or search a beer, rate it, earn XP and complete quests while it maps your flavor preferences over time. Free on iOS with a one-time unlock for Pro.
FreePay onceNo subscription
What to know▼
How it works
You scan or search a beer to log and rate it, earning XP and completing daily quests; underneath, it maps your palate across six flavor axes and tracks how your taste is changing over time.
What's different
No social feed and no subscription — Pro is a one-time unlock rather than recurring.
Pricing
Free on iOS, with a one-time payment to unlock Pro.
Best for
Beer drinkers who want to gamify tracking what they drink and understand their own taste preferences.
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An anime and manga tracker that rates story, visuals and feels separately and gives a yearly recap card — free but ad-supported, for people switching trackers.
Free
What to know▼
How it works
Tracks anime and manga, rating Story, Visuals and Feels separately instead of a single score, with a weekly airing schedule, episode tracking, light novel support, achievements, and a shareable yearly recap card.
What's different
Splits ratings into multiple dimensions instead of one overall score, unlike other trackers.
Pricing
Free, ad-supported.
Best for
Anime and manga fans switching from a bloated tracker who want more nuanced ratings.
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Offline phone app that turns your device into a paranormal research kit with an EVP recorder, Spirit Box, and EMF meter, for enthusiasts who want ghost-hunting tools without an account or cloud data sync.
No sign-upWorks offline
What to know▼
How it works
Runs offline and provides an EVP recorder, a Spirit Box, and real-time EMF readings.
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Converts photos and illustrations into pixel art entirely in the browser, with retro console presets, palette import, CRT effects, and batch export, without uploading files to a server.
FreeNo sign-upData stays with you
What to know▼
How it works
Runs locally in the browser: choose a pixel size and preset (NES, Game Boy, PICO-8...), import Lospec palettes, add scanline/CRT effects, then export a PNG; supports batch conversion.
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Identifies rocks, crystals, minerals, and fossils from a single photo, with a confidence score and at-home tests to confirm the result.
FreeNo sign-up
What to know▼
How it works
Analyzes an uploaded photo and returns likely matches with a confidence score, alternative candidates, and physical tests (streak, hardness, magnet, acid fizz) to verify.
Pricing
Three free identifications, then a paid Pro tier for unlimited use.
Best for
Anyone who picks up an unknown rock, mineral, or fossil and wants an instant guess plus a way to double-check it.
