Mietkaution & Mietrecht App

Tenant app for tenancy law: security deposit, termination, rent increases, utility bill statements. Almost everything hinges on a date. MietFrist calculates the deadlines from your tenancy data and displays the relevant paragraph for each deadline; for deadlines that are hidden, the Pro version provides a link to the official legal text.

DEADLINES FROM YOUR DATA

• Enter your information: tenancy start date, base rent, receipt of the statement of accounts or a rent increase, tenancy end date, and return of the property.

• The app calculates the landlord's billing period and the tenant's objection period (each 12 months), notice periods of three, six, or nine months depending on your role and tenancy duration, waiting, blocking, and approval periods for rent increases, the statute of limitations for the return of the security deposit, and the six-month periods according to § 548 of the German Civil Code (BGB).

• Based on the base rent, the app displays the maximum legal amount of the security deposit.

• Calculations are based on Sections 187, 188, and 193 of the German Civil Code (BGB): The day of the event is not included, and deadlines falling on weekends or public holidays are moved to the next working day.

REMINDERS THAT ARRIVE
Free notification before the next deadline; reminders for all deadlines with the Pro version. Choose a lead time of 14, 30, or 60 days. Remains active even after restarting your phone. Check off completed tasks with a single tap.

SAMPLE LETTERS (PRO)
Objections to utility bills, notices of termination, and requests for the return of your security deposit: all with your personal information. The subject line is displayed for free; the full letter is available with the Pro version. Drafting assistance is provided, but your individual circumstances are not reviewed.

TOPICS IN TEXT
Operating costs, notice periods, security deposits, rent increases, defects, cosmetic repairs, owner occupancy: For each topic, the app displays the content of the relevant regulations and case law, with links to the official sources.

NO ACCOUNT, NO ADS

No account, no cloud, no tracking, no ads. All data stays on your device.

FREE AND PRO
One rental agreement with the next deadline, including explanation and source, is free. MietFrist Pro is available as a monthly or annual subscription: unlimited rental agreements and CSV export of the deadline overview with legal basis and source for each line. The subscription renews automatically and can be canceled at any time in Google Play.

IMPORTANT NOTICE
MietFrist exclusively presents the wording and content of the respective linked official sources (legal texts via gesetze-im-internet.de, decisions and press releases of the Federal Court of Justice) and calculates deadlines according to the rules of Sections 187, 188, and 193 of the German Civil Code (BGB). The app is a private offering, is not affiliated with any authority, and does not replace legal advice. It does not examine your individual case and does not take into account differing contract clauses, special state regulations, or changes in case law as of the date indicated. For a binding assessment, please consult a lawyer, a tenants' association, or the relevant authority.


This information is not tailored to your specific situation and does not consider differing contract clauses, special state regulations, or changes in case law. OFFICIAL SOURCES
Legal texts via gesetze-im-internet.de:

• Operating costs: https://www.gesetze-im-internet.de/bgb/__556.html
• Types of costs: https://www.gesetze-im-internet.de/betrkv/__2.html
• Notice periods: https://www.gesetze-im-internet.de/bgb/__573c.html
• Form of notice of termination: https://www.gesetze-im-internet.de/bgb/__568.html
• Owner's own use: https://www.gesetze-im-internet.de/bgb/__573.html
• Hardship objection: https://www.gesetze-im-internet.de/bgb/__574b.html
• Blocking period: https://www.gesetze-im-internet.de/bgb/__577a.html
• Security deposit: https://www.gesetze-im-internet.de/bgb/__551.html

• Statute of limitations after return: https://www.gesetze-im-internet.de/bgb/__548.html
• Regular statute of limitations: https://www.gesetze-im-internet.de/bgb/__195.html
• Rent increase: https://www.gesetze-im-internet.de/bgb/__558.html
• Rent reduction: https://www.gesetze-im-internet.de/bgb/__536.html
• Calculation of deadlines: https://www.gesetze-im-internet.de/bgb/__187.html
Federal Court of Justice (BGH) decisions are individually linked in the app on bundesgerichtshof.de.