Fossy Protokoll

Fossy Protokoll helps tenants in Germany keep a verifiable record of defects in

their flat: noise disturbance, mould, heating failures and more.

From the recorded occurrences it builds a protocol covering a chosen period, and

a factual defect notification addressed to the landlord. Both can be saved and

shared as PDF or Markdown.

Note: the app is in German

The interface and all generated documents are written in German, because they

follow German residential tenancy practice.

Not legal advice

The app documents, it does not advise. The generated texts cite no statutes,

claim no rent reduction and set no deadline of their own. A response date only

appears when you enter one yourself.

Everything stays on the device

Data lives in a local database, photos in the app's private directory. The app

requests no permission that touches your data or the device, never accesses

the network, and contains no

tracking or analytics. When you export something, you choose the destination

yourself.

Android's automatic backup is switched off as well, so your defects and photos

never reach a cloud account. Instead you can create a full backup as a ZIP file