How to Prove Hours Worked When You're Self-Employed
Tobias Huppertz · Published
To prove hours worked when you’re self-employed, you need records created while you work, not typed up the evening an invoice goes out. Your invoices, a log kept as you go, and photos with the time burned in work best together. Foto Notes’ check-in mode builds exactly that last piece. Every check-in and check-out is a selfie with a burned-in timestamp and location, and a PDF report sums it all up. Here’s how it works, and where the classic paper trail falls short.
When you actually have to prove your hours
Three situations in which the record matters:
- Billing by the hour: with time-based invoices, traceable line items are part of how the invoice gets reviewed.
- Questions about scope: if the hours billed are disputed, it comes down to one account against another without a record.
- Your own estimates: reliable actual times are the basis for pricing comparable jobs realistically.
Solid records are also part of running a business; the IRS keeps a plain-English page on recordkeeping for the self-employed. You keep these records as evidence for your own invoices, not for someone else’s time clock.
The classic paper trail and where it’s thin
The usual methods share one weakness: they’re created, or stay changeable, after the moment they’re supposed to prove.
| Method | What it does | Where it fails |
|---|---|---|
| Paper timesheets / spreadsheets | quick, familiar | can be filled in any time, so they prove a claim, not presence |
| Calendar and notes apps | entries carry a date | stay quietly editable |
| Emails and messages | real timestamps | only cover the edges of the day, not the hours between |
| Invoices and bank statements | prove payment | say nothing about when the work happened |
What’s missing is a record created while you work that can’t change unnoticed afterwards.
Check in with a photo: how it works
That’s what the check-in mode in Foto Notes is for. I developed it because my own paper notes proved nothing the one time a client pushed back. Every entry is now tied to a photo. The workflow has four steps:
- Switch modes. Below the shutter sits the toggle from Photo to Check-in; the camera flips to the front lens.
- Check in. Tap the shutter, done. You get a selfie with the stamp burned in (time, date, location) and “Checked in” on the note line. The entry lands in the history with a thumbnail.
- Check out. Same tap when you finish. If you forget, the app reminds you when a shift runs unusually long. You can fix the time later, but the correction is visibly marked in the history and the report.
- Pull the report. Pick a range in the history (this month, last month, everything) and export it as PDF or CSV.
The stamp on those proof photos is the same one the photo mode uses. The full setup guide is in how to timestamp photos on iPhone.
The report: PDF for the client, CSV for the books
The PDF lists each working day’s sessions with start, end, duration and the proof photos, adds daily totals and a grand total, and ends with signature lines for both sides. Print it, have it countersigned, file it. The CSV carries the same entries into Excel or your bookkeeping.
Check-in mode and the history are free. The first report export is free; after that, exporting is part of Pro, as a subscription or a one-time lifetime purchase, with no forced subscription.
Cheat sheet
| You want to … | Here’s how |
|---|---|
| Check in | toggle below the shutter to Check-in, tap the shutter |
| Check out | same tap at the end of the shift |
| Fix a forgotten check-out | history → press and hold the session → adjust check-out time |
| Export the report | history → export → pick a range → PDF or CSV |
| Change what’s on the stamp | hold down the stamp in photo mode |
Frequently asked questions
Will this hold up in court?
There’s no guarantee. Whether a court, an insurer or a client accepts any record depends on the case. The report can serve as evidence because its core isn’t typed after the fact: every entry hangs on a photo with a burned-in timestamp, and corrections are labeled as corrections.
Does check-in work offline?
Time, date and GPS coordinates in the stamp work without a connection. Only the street address needs internet, since it’s resolved from the coordinates. Offline, the stamp shows the coordinates instead, which still places you on site.
Where does my data live?
On your device. Foto Notes has no account and no server of its own; the check-in log is additionally backed up to your own iCloud, so the history is not lost when you switch devices.
Is there an Android version?
Yes. Foto Notes runs on iPhone and iPad as well as on Android devices from Android 8, with the same stamp and the same 28 languages. What matches across the two platforms and what differs is covered in Foto Notes for Android.
To assess it yourself, install Foto Notes, switch to check-in mode and check in once. The first report is free.