Under the hood

Free calculators and quick file tools, right in your browser.

• Runs entirely in the browser, with no server or backend
• 28 tools across six categories: finance, health, business, PDF, image, and everyday utilities
• Includes photo-to-text (OCR) and QR code generation
• No account, and no data leaves the device

Simple PDF tools that work right in your browser.

• Runs entirely in the browser, with no uploads
• Tools: merge, split, rotate, organize pages, PDF to image, and image to PDF
• No account or signup

The air in your home, made visible.

• Measures fine particulates, carbon dioxide, humidity, and temperature
• Low-power e-paper display, readable from across the room
• HEPA-grade filtration
• Hand-finished walnut, designed and assembled in Wisconsin
• Runs entirely on the device, Home Assistant compatible. No cloud, no account.

Bookkeeping that quietly runs itself.

• Reads receipts straight from your email inbox
• Sorts every expense on your own computer, with nothing sent to a cloud service
• Keeps your books in a spreadsheet you control
• Runs on a schedule, with a review step for anything it is unsure about

Home camera software that keeps everything on your own device.

• Runs on a Raspberry Pi 5 with a camera, in your home
• Person detection on the device, with nothing sent to the cloud
• Built to be released open-source under the AGPL-3.0 license
• Early build: one camera and person detection today, richer alerts in progress

Keeps track of every part that goes into a build.

• Tracks every part in stock and where it is used
• Knows exactly which parts go into each product, down to the smallest piece
• Sets aside the parts an upcoming build needs
• Totals the real cost of each finished unit automatically
• Imports parts and orders from common suppliers
• Runs locally, with no cloud