StreckenProfi

GPS mileage logbook with automatic distance tracking, a tamper-evident audit chain and PDF, CSV/DATEV & JSON export – all stored locally on your device.

StreckenProfi is your electronic driver's logbook (Fahrtenbuch) – built around the requirements of German tax law and designed for maximum privacy.

RECORD TRIPS • GPS recording: start a trip and your kilometres are tracked automatically and accurately. • Live Activity & Dynamic Island: keep the running trip and current distance in view. • Manual entry for trips added later. • Tax categories (R 8.1 LStR): Business, Private, Commute, Return home, Family home trip. • Automatic return-trip suggestions and frequent destinations.

TAMPER-EVIDENT (§ 146 AO / GoBD) • Gapless cryptographic audit chain (HMAC-SHA256) across all entries. • Cancellations stay auditable – nothing is deleted without a trace. • Weekly, monthly and yearly closings to seal reviewed periods. • Late-entry and mileage-gap warnings keep your logbook compliant.

TAX & EXPORT • 1% rule vs. logbook method – built-in comparison calculator (§ 6 EStG). • Per-diem meal allowance (§ 9 Abs. 4a EStG). • Export as PDF (A4), CSV, DATEV-compatible, JSON and GPX. • Tax-audit mode: a read-only yearly view for the tax office. • 10-year retention (§ 147 AO) with yearly archiving. • Tax-advisor workflow with delivery reminders.

MORE THAN AN APP • CarPlay: start and stop trips right from your car. • Apple Watch: control recording from your wrist. • Home Screen and Lock Screen widgets. • Siri & Shortcuts for quick actions. • Multiple vehicles with licence-plate and VIN management.

PRIVACY FIRST • All data stays on your device; optional iCloud sync stays in your private, encrypted iCloud. • No tracking, no ads, no sharing with third parties. • App lock via Face ID / Touch ID. • Encrypted backups (AES-GCM). • JSON export contains addresses only – never raw GPS coordinates.

Available in German, English and Spanish. Note: StreckenProfi helps you keep an orderly logbook but is not a substitute for tax advice. Acceptance in any individual case is at the discretion of the tax authority.