Support
Your records are kept on your phone. Signing in is optional and adds a copy with your account. If something is wrong, write to the address at the bottom of this page — there is no in-app chat and no ticket queue.
What the app does, and what it does not
It keeps the records: expenses under HMRC's own categories, income, mileage at the approved rates, and receipts as evidence.
It does not file. It is not HMRC-recognised, it does not submit anything, and it does not connect to your bank. It produces the figures and the export that you, or your accountant, file with.
The Pro subscription
Pro is an auto-renewing subscription, monthly or annual. It is sold by the store you installed the app from, not by us, and your payment details never reach the app.
Free covers expenses, income and mileage with no entry limits. Pro adds automatic GPS trip recording, PDF summaries and year-on-year comparison.
To cancel or change it:
- On Android: Play Store → Payments & subscriptions → Subscriptions.
- On iPhone or iPad: Settings → your name → Subscriptions.
Access continues until the paid period ends. If you reinstall or change phones, use Restore purchase on the Pro screen.
Common questions
Do I have to sign in? No. The app works fully signed out, in flight mode. Signing in keeps a copy of your records with your account so you can pick up on another phone, and that is the only thing it does.
My sign-in code has not arrived. The code is emailed and can take a minute. Check the spam folder. The code is longer than six digits — copy the whole thing.
A receipt was read wrongly. The reading happens on the phone and is only ever a suggestion. Correct the amount, date or merchant before saving; nothing is stored until you confirm it. If a particular shop's receipts are always misread, send one and it will be looked at.
Which mileage rate does it use? HMRC's approved rates: 55p a mile for the first 10,000 business miles in a car, 25p after that. The app shows how close you are to the threshold as the year goes on.
My records have gone. Signed out, everything is on the device and nowhere else, so uninstalling deletes it. Signed in, install the app on the new phone and sign in with the same account. If you switched on the Google Drive backup, the zip is in your own Drive.
Can I get my data out? Yes. Export any set of entries as a spreadsheet or a PDF from the log, at any time, free.
How do I delete everything? Settings → Delete all my data. It removes the phone copy and, if you are signed in, the server copy. It is immediate and cannot be undone. Backups already in your Google Drive are yours to delete.
The tax figure looks wrong. Net profit is your income less the costs you recorded. It is before capital allowances and any losses brought forward, so it is not your taxable profit and not your tax bill. Check it with an accountant or MTD-recognised software.
When does the tax year change over? 6 April. The app follows HMRC's year, not the calendar year.
Contact
hello@oneappcompany.com
Please include your device, the app version, and what you were doing. The version is on Settings → About.