Save the guides you trust
Open a repair site in the app and tap Save this page. The steps, tools, torque specs, pictures and links come with it, ready to use offline.
Android · Coming soon to Google Play
Ref Sensor
The repair notebook for your Porsche 944, and any classic car. Keep the jobs you do, the steps and torque specs they need, and the history of every car, on your phone, in the garage.
Made for the 944
Everything a job needs, in one place.
Ref Sensor leads with the 944, 924 and 968, and works for any car you own.
Garage mode
One big step at a time, read aloud if you like, and the screen stays on. Say “next” or “back” when your hands are covered in grease.
Videos, catalogs and tools
Repair videos for each job, Porsche’s official parts catalogs for every year, and a 944 tool kit with the sizes you’ll need.
Jobs and history
Track each job’s mileage, parts cost and notes. Finished jobs build a service history for every car.
Private and offline
Everything stays on your phone. No account, no ads, no tracking. Save a backup file whenever you like.
Free to try
The free version holds one car and three procedures, with every feature. A single purchase unlocks unlimited cars and procedures. No subscription.
Ref Sensor isn’t affiliated with Porsche AG. Porsche, 924, 944 and 968 are used only to describe the cars the app supports. Always check procedures and specifications against your car’s service manual.