Fifty Fifty
Privacy
What this app knows about you, in plain words. No small print, because there is nothing here that needs hiding.
LAST UPDATED August 21, 2026
The short version
Fifty Fifty keeps the name you typed, the expenses of your groups and, if you chose to, an email. What you write about money stays between you and the people in your groups: it is never sold, and it is never used to choose an ad. The app does show ads, and the advertising section below says exactly what that means. You can delete it all from Settings.
Who is responsible
MYT Developers, the maker of Fifty Fifty, is the data controller. The only contact address is myt.developers@gmail.com and it is read by a person.
What is stored
The name you type when you start. A profile photo, only if you add one. An email and a password, only if you link them — and that is optional forever. The groups you belong to and their expenses and payments: what, how much, who paid and how it was split. A notification token for each phone, only while notifications are on. Language, currency and dark mode stay on your phone and never leave it.
What is never collected
No contacts, no location from GPS, no browsing history and no analytics of how you use the app. Your expenses, the amounts and who owes whom are never used to target advertising, and no advertiser ever sees them.
Why it is stored
To run the service you asked for: an app that splits expenses cannot work without knowing the expenses. Under the GDPR that is performance of a contract (Art. 6.1.b). Notifications rest on your consent (Art. 6.1.a) and switching them off in Settings withdraws it and deletes the token from the server.
Who else sees it
The other members of a group see your name, your photo and the expenses you add there — that is the whole point of a shared group. They never see your email. Beyond that, only the providers that make the app run: Supabase (database and accounts), Expo (delivering notifications), Resend (the single password-recovery email) and Google AdMob (the ads, explained below). None of them use your data for anything of their own, and none of them are given your expenses.
Advertising
The app is free because it shows ads, served by Google AdMob (Google Ireland Limited). To show them, Google receives your IP address, your device and its operating system, a rough idea of where you are worked out from that IP, and whether an ad was shown or tapped. On Android it may also use the advertising ID; on iOS it only uses the equivalent identifier if you said yes when the system asked to track you, and you can take that back at any time in your phone settings. In Europe and the UK the app asks for your consent before any of this and lets you change your mind later. Saying no to personalised ads does not take the ads away: it makes them less relevant. Your expenses are never part of it. What Google does with what it receives is governed by its own privacy policy, at policies.google.com/privacy.
Where it lives
On servers in the European Union. Everything travels encrypted, and each row is protected so that only the members of a group can read that group.
For how long
For as long as you keep the account. When you delete it, your name, photo, email and notification tokens go immediately, and the account itself with them. The amounts stay, without a name attached, because they hold up other people’s balances; groups where nobody else is left are deleted whole.
Your rights (GDPR)
Access, rectification, erasure, restriction, portability and objection. Most of them are a tap away: the name and photo change in Settings, and erasure is the Delete my account button. For anything else, write to myt.developers@gmail.com and you will have an answer within 30 days. If you are not happy with it you can complain to your data protection authority — in Spain, the AEPD (www.aepd.es).
California (CCPA/CPRA)
Your personal information is not sold, and it never has been. Showing personalised ads may count as "sharing" for cross-context behavioural advertising under Californian law: you can stop it by refusing tracking when the app asks, or by turning off personalised ads in your phone settings. You have the right to know what is held, to have it deleted, to correct it and to not be discriminated against for asking. The same address handles all of it: myt.developers@gmail.com.
Children
Fifty Fifty is not aimed at children under 13, and under 16 in countries where that is the age of consent. If you believe a child has an account here, write and it will be deleted.
Changes to this notice
If anything material changes, the app will say so before it takes effect, not afterwards. The date at the top of this page always tells you which version you are reading.