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ReiVi · One app, one job

TaxDrivefor the self-employed and commuters

The mileage log is a scrap of paper in the glove compartment, and the tax return is due.

Your mileage log on your phone, every trip with a checksum

Enter every trip right after you drive it: date, start, destination, odometer reading and purpose, split into business, private and commute. The app adds up the kilometers and gives every trip a checksum. At the end of the year you export everything as a PDF for your tax advisor.

View on Google Play

For Android · free without limits, with ads · PDF export as a one-time purchase

  • No account
  • Entries stay on your device
  • Logging works offline
  • No subscription
Page 1
Mileage log · Sample with made-up entriesOct 20 to Oct 24
DateRoute and purposeTypekm
Mon, Oct 20Freilassing to Traunstein, client meeting Huber companybusiness87 km
Tue, Oct 21Home to the office and backcommute24 km
Wed, Oct 22Shoppingprivate11 km
Fri, Oct 24Freilassing to Bad Reichenhall, delivery of sample partsbusiness38 km
driven on business125 of 160 km

All entries are made up and only show what a log looks like.

How your mileage log comes together

  1. Add a vehicle

    Add your vehicle with its license plate number. You keep several vehicles separately.

  2. Enter a trip

    You type in the date, start and destination address, odometer reading and purpose, with address suggestions to help. Then you mark the trip as business, private or commute. The trip is not tracked by GPS.

  3. Export

    The app adds up the kilometers for each type. At the end you create a PDF with all trips, kilometers, purposes and checksums.

What belongs in a mileage log

Every business trip needs these details. For private trips, the date and kilometers are enough. The journey between home and your first place of work is recorded separately, because for tax purposes it is its own category.

DetailExampleIn the app
DateOct 21automatic
Odometer at start and end48,210 to 48,297odometer reading
Destination4 Musterstraße, Traunsteindestination
Purpose and business contactclient meeting Huber companypurpose
Type of tripbusinessbusiness, private, commute

You can also write this down on paper. Enter every trip promptly, including short and private ones, and make sure the odometer readings follow on from each other. If the route differs, write down the detour and the reason.

What the checksum does

Every trip gets a SHA-256 checksum. It appears on the entry and in the PDF. If the trip changes, the checksum changes too.

Mileage log or the 1% rule

In Germany, if you also use a company car privately, you pay tax on this benefit in kind. There are two ways to do this: the flat-rate 1% rule (§ 8(2) of the Income Tax Act, EStG) or the logbook method (§ 6(1) no. 4 EStG), where you prove the private share using the kilometers actually driven. If your private share is low, the mileage log often works out cheaper.

Which method is better for you, and whether your mileage log is accepted, depends on your situation and is decided by the tax office. Your tax advisor can advise you on this.

Mileage log on paper or in the app?

A paper mileage log costs little and is enough if you fill it in after every trip. But notes get lost or become illegible, and you add up the kilometers yourself at the end of the year.

You have your phone in your hand anyway once you get out of the car. The app sets the date, suggests addresses, separates the types and adds up the kilometers.

MerkmalPaper templateApp
Costa notebookfree without limits, with ads, PDF as a one-time purchase
Dateyou write it downthe app sets it
Kilometers per typeyou calculate themthe app adds them up
Checksumnoneper trip, also in the PDF
Sharingtype it up or copy itPDF

What the app costs

no subscriptionbuy once

You record trips for free and without limits. The free version shows ads. A one-time purchase in the Play Store unlocks the PDF export and removes the ads. There is no subscription.

Common questions about the mileage log

Will the tax office accept the mileage log?

That is for the tax office to decide, and the app cannot promise anything about it. It records the details that belong in a mileage log and gives every trip a checksum, which appears on the entry and in the PDF and changes with the trip. If you have questions, your tax advisor can help.

What does the SHA-256 checksum mean?

When saving, the app calculates a checksum for every trip. If the trip is changed later, the checksum changes. It appears on the entry and in the PDF.

Can I manage several vehicles?

Yes. You add several vehicles with their license plate numbers. Business, private and commute trips are added up per vehicle.

Can I export the mileage log?

Yes, as a PDF with all trips, kilometers, purposes and checksums (one-time purchase). The PDF is meant for your tax advisor.

Does the app track my trips by GPS?

No. You enter the start, destination and odometer reading yourself.

Does the app work without internet?

Yes, recording works offline. Your trips stay on your device, and you do not need an account.

This app is made by ReiVi, the app label of Viktor Reinik from Freilassing, Germany. Every ReiVi app does exactly one job and works without an account. Who is behind ReiVi (in German)

View on Google Play

Legal basis (Germany): § 6(1) no. 4 EStG (logbook method), § 8(2) EStG (taxation of private use of a company car). Whether a mileage log is accepted is decided by the tax office. This page is not tax advice. If in doubt, ask a tax advisor. Updated on October 26, 2026.

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