Four Rafacst Tecnologia iPhone apps are built to work without requiring an account: they keep your information on the device itself and ask for no sign-up to get started. Here is where each one stores data, whether it needs an account, and whether it works offline (with no internet).
| App | Where data lives | Account required? | Offline? |
|---|---|---|---|
| Stamp Hunt | On the iPhone itself | No | Yes |
| Stamp Hunt Brasil | On the iPhone itself | No | Yes |
| FastBillSplit | On the device, receipt read on the spot | No | Yes |
| GalleryCheckup | In your photo library, reviewed locally | No | Yes |
The logic is simple: not every piece of data needs to leave your phone. A travel diary, a restaurant bill to split, or a cleanup of your gallery are all tasks you can handle locally, with no server in the middle.
Stamp Hunt treats your trips as a private diary kept on the device, and the Stamp Hunt Brasil version does the same for the country’s states. FastBillSplit scans the receipt and splits the bill with no login, so no payment data turns into an account. GalleryCheckup reviews your library in batches and only deletes what you confirm, without sending your photos anywhere.
A note on honesty: privacy is a studio principle, but that does not mean every app is fully offline. Apps like Receitório and Tigela Boa offer features that rely on sync, and each describes its own data model on its page. This list is specifically the apps that run keeping everything on the device.
If privacy is your main criterion, start with these four. The privacy summary Apple requires shows up on each one’s App Store listing, and the app directory gathers the links so you can compare before downloading.