Book Spotter
iPhone and Android app that uses the camera and augmented reality to spot the books you are looking for on any shelf, offline, entirely on your device.
Details →← All workSoftware · Mac, iPhone, and web app
Tally Hour
Time tracking for consultants who bill by the hour, synced across Mac, iPhone, and the web.
In daily use here, public release plannedStatus as of November 12, 2026
Tally Hour has been the time tracker we work in every day since July 2026. It has not been released to the public: the iPhone app is planned for the App Store and the Mac app as a direct download. The address tallyhour.com is the sign-in page for the web client.
Screenshots show the web client with made-up clients and entries.
What it does
Built to replace our own spreadsheet
Tally Hour replaced the Google Sheets workflow we used to track consulting hours. About 94,000 records moved over when we switched in July 2026.
There is a Mac app, an iPhone app with widgets, and a web client. All three stay in sync through one server, including when two devices edit the same entry while one of them is offline.
- Continue an earlier entry or end the running one in a single action
- Entry list and a week board
- Reports by client, ticket, and category, with billed and paid tracking
- Invoices and exports
- Find and replace across entries, and a full edit history for every entry
- Conflict resolution when the same entry changes on two devices
- Silent push, so the iPhone is current before you open it
At a glance
- Status
- In daily use here, public release planned
- Platforms
- Mac, iPhone, and any modern browser
- Sync
- One server on Cloudflare, with vector-clock conflict detection
- Testing
- More than 140 automated tests on the server
- Link
- tallyhour.com
Built with
- SwiftUI for Mac and iPhone
- React 19, Vite, and TypeScript
- Tailwind CSS 4
- TanStack Query and Zod
- Cloudflare Workers, Hono, and D1
More software
Other things we have built
Nertz Score
iPhone score keeper for the card game Nertz (also called Nerts, Pounce, or Racing Demon). Works offline, with no accounts and no server.
Details →ThriftSpotter
iPhone app for resellers: photograph a thrift-store shelf or an estate-sale table and it flags anything likely to resell above your minimum price.
Details →Call Review
Offline tool for investigators: it transcribes a jail-call export on a workstation with no internet and builds a searchable review report that opens in any browser.
Details →Need software like this built?
We scope it, build it, test it properly, and keep it running. You deal with the engineer who writes the code.
