Don't lose a day's work between the site and the invoice.
Temalog is a record-keeping app for independent tradespeople in Japanese construction.
It records how many days you worked at each site and what materials you paid for out of pocket.
iPhone / iOS 18.0 or later · Japanese / English · No account · Everything stays on the device
Built for the person being recorded
The usual apps face the other way
Almost every site-attendance app is built for the company managing the workers. Temalog is for the tradesperson holding the basis for their own pay.
No clocking in
Pay is settled per day worked or per job, not by timestamp. Clock-ins add taps, and a record with holes in it is no basis for an invoice.
No company account
Whatever system each contractor uses, only your own app can total every site you work across.
Three taps a day
Pick the site
Recently used sites come first, and one is already selected.
Tap the number of days
0.5 / 1.0 / 1.25 / 1.5 as large buttons, or type any value. Two sites in one day is just two entries.
Save
The amount appears immediately, always with its breakdown — "1.25 days × 22,000" — so you can see where the number came from.
Raising your rate never rewrites the past
Each site can have a daily rate, an hourly rate and an overtime rate. Rates are stored as revisions with an effective date rather than overwritten, so an amount you already reported never changes.
Never forget an advance
Record it at the counter
Amount, vendor, a photo of the receipt, and which site it should be billed to.
See it before you close
Anything still unbilled is listed — including what was left over from earlier months.
It lands in the closing
Attach it to a site and it appears as a line item when you close that site.
A confirmed total stays put
Confirming a closing freezes the days, the rates that applied and the advances, as they stood. Editing records or rates afterwards does not change what you confirmed. To change it you close again, and the previous confirmation is kept in the history. This is so that opening the app during a dispute never shows a different number than the one you handed over.
A closing day per site
The 20th, end of month — whatever each contractor uses. A closing period runs from the day after the previous closing day through the current one. Home totals use calendar months instead, so both are labelled and never confused. Due dates are generated from the payment terms, and you can list what is still unpaid.
Free and Full Access
| Feature | Free | Full |
|---|---|---|
| Record, edit and delete entries | ✓ | ✓ |
| Sites | 5 | Unlimited |
| Advances | 10 total | Unlimited |
| Monthly summary and per-type breakdown | ✓ | ✓ |
| CSV export | ✓ | ✓ |
| Backup export | ✓ | ✓ |
| Unbilled advance alerts | — | ✓ |
| Work sheet PDF | — | ✓ |
| Payment tracking | — | ✓ |
| Restore from backup | — | ✓ |
| Photos in daily notes | 1 per day | Unlimited |
Full Access is a one-time purchase (¥2,000). It is not a subscription and can be restored at any time. Export stays free — being unable to get your own records out would be a poor deal in a work app.
Made to be used on site
19pt body text, 64pt primary buttons, 56pt minimum tap targets. Usable with gloves on and in bright sunlight. Figures are monospaced, with no flashing or count-up animation. Dark Mode is fully supported.
FAQ
Where are my records stored?
Only on this device. No account is required and nothing is sent anywhere. Photos stay on the device too.
What happens when I change phones?
Export a ZIP of your records and photos from Settings → Backup and open it on the new device. Exporting is free; restoring is part of Full Access.
Can it produce an invoice?
Not in this version. It produces a work sheet and an itemised list of advances, which you can attach to whatever form your contractor uses.
Is it a subscription?
No. One-time purchase, no recurring fee.
About the terms and contracts
The types shown in the app — daily rate, lump sum, hourly — are ways of calculating an amount. They do not determine the form or legality of any contract. Please confirm contractual matters with the party you work for and with a professional. Totals are kept excluding tax and tax is shown only as a reference; the app does not guarantee the final invoiced amount or its tax treatment.