Pennyweight · House #28,294

What it is

Calls itself “accounting software”.

• Calls itself: accounting software

“Traditional accounting software was built for humans to operate”

Where it puts itself

Its one line of difference: “not a chatbot bolted onto an old product”

“Designed for the AI you already use — Claude, ChatGPT, Gemini, Grok, or any MCP client — from the ground up, not a chatbot bolted onto an old product.”

“No dashboard required — you won’t miss it.”

What it costs

Monthly subscription and yearly plan. Free for a trial period. Trial: “6 months”. Prices quoted: $69.99/yr, $7.99/mo.

• Monthly: yes
• Yearly: yes
• Free plan: free for a trial
• Price: $69.99/yr · $7.99/mo
• Trial: 6 months

“6 months free — then $7.99/mo or $69.99/yr, USD. No catch.”

“6 months free. No credit card needed.”

Who it sells to

Sells to consumers.

• Sells to: consumers

“Keep your human happy. They hate bookkeeping.”

How it runs

Hosted in the cloud. No API. AI is the core of the product.

• Runs where: cloud / hosted
• API: no
• AI role: core to the product

“Your passphrase derives an encryption key in your browser, and your data is encrypted with it.”

“No software to install.”

What it works with

Names ChatGPT, Claude and 4 more on its pages.

• Names: ChatGPT · Claude · Gemini · +3

“Designed for the AI you already use — Claude, ChatGPT, Gemini, Grok, or any MCP client — from the ground up”

“Pennyweight starts from the other end: a ledger whose primary user is your AI.”

What it offers as proof

In beta. Trying it asks for an email.

• Stage: beta
• Instant signup: yes
• Trial asks for: an email address

“Now in open beta”

“Join the beta”