DoubleTaxationDoubleTaxation app for Android
Everything on this website, on your phone — plus days of stay with the residency thresholds, automatic country detection, notifications and an encrypted backup.
Where the app stands
The app has been in closed testing on Google Play since 3 November 2026.
For new developer accounts, Google requires at least 12 people to test an app for 14 days in a row before it can be published for everyone. That period ends on 17 November 2026. We then apply for publication, and Google reviews the application — usually within 7 days.
So we expect the app to be available to everyone on Google Play around the end of November 2026. The exact date depends on Google's review. We will update this page as soon as the app is available.
What the app does
- Determines your tax residence between your home country and one of 27 other countries — under the law of both countries and the double taxation treaty, with links to the provisions and court practice.
- Shows which country taxes each type of income: salary, business income, pension, rent, dividends, interest, sale of property.
- “My status” on the home screen: your country of residence on the map, the reliability of the conclusion and your days in each country.
- Days of stay: trips, days in each country, how many days are left before the residency threshold under each country's rules, Schengen 90/180.
- Automatic country detection, if you turn it on: a few times a day the app notes the country of the mobile network (no GPS) and records the days itself. Any entry can be changed or deleted.
- Notifications when you are getting close to a country's day threshold.
- Tips: tax on your income in both countries, day scenarios and special tax regimes.
- Tax burden on salaries, tax regimes and business taxes — the same as on the website.
- An encrypted backup in your account or in a file. Only you know the password.
- 24 versions in 18 languages.
How to install it now
While testing is under way, anyone can install the app by becoming a tester:
- Join the doubletaxation-testers group with the Google account you use on Google Play.
- Open the testing page and agree to become a tester.
- Install DoubleTaxation from Google Play using the link on the same page. Updates will arrive automatically.
You need a phone with Android 7.0 or later. There is no iPhone version yet. Once the app is published for everyone, you will simply install it from Google Play.
Your data
Your answers, result and trips are stored only on the phone, encrypted. Signing in with Google is needed only for “My profile” and the backup in your account. There are no ads. The daily anonymous usage ping can be turned off in the settings. Details are in the privacy policy.
Feedback
Found a mistake or have a suggestion? Use the feedback form or write to support@doubletaxation.app.