(01) The brief
Rameseba’s own product. Picking workers are paid by productivity and can rarely check their payslip. PickerCal lets them log every receipt and know how much they have earned.
(02) What it does
- Receipt scanning with the camera and text recognition on the device.
- Commission, goal and daily bonus calculation.
- History and reports by period.
(03) How it was built
- OCR with Tesseract running in the browser: the image never leaves the phone.
- Convex to sync history across devices.
- Installable and usable one-handed.
(04) Security
- Receipts are not uploaded: only the extracted text is stored.
- Per-user sessions with expiry.
(05) Speed and Google
Recognition in seconds on mid-range phones.
(06) What it deliberately doesn’t do
- It does not connect to the picking companies’ systems.
(07) Real measurement
| Performance | Accessibility | Best practices | SEO | LCP |
|---|---|---|---|---|
| 97 | 89 | 96 | 91 | 2.1 s |
Google PageSpeed Insights, mobile, September 30, 2026. Numbers are not rounded up; they are re-measured periodically. Full table of the 27 sites →
