Diffee VS GearGenius

GearGenius's answer:

It turns a car's service history into one health score out of 100, and shows exactly which factor pulled it down. Then there is Genie, the app's sidekick. He tells you when a service is getting close, answers questions already knowing the car's age, mileage and history, and teaches the basic checks in short lessons you do on your own car. On top of that sit a service schedule that works from day one and OBD-II fault codes over Bluetooth LE (which also works on iPhone). No ads and no tracking.

GearGenius's answer:

Most maintenance apps record what you did. GearGenius also tells you what it means: how healthy the car is, what is due next, what a fault code means and what the fix costs, what the car is worth to sell or trade in, and whether a garage's quote is fair against your own history. Genie explains it in plain English and teaches you the checks worth knowing. It is free to use on iPhone and Android, in eight languages.

GearGenius's answer:

Everyday drivers who want to know what their car needs without learning to be mechanics. Usually a car out of warranty, looked after by an independent garage or by the owner. Also people buying or selling a used car, who want a proper check or a fair price.

GearGenius's answer:

Flutter (Dart) for iOS and Android, Firebase (Authentication, Firestore, Cloud Functions, App Check), a large language model for the AI chat, Bluetooth LE for OBD-II, StoreKit and Google Play Billing for the subscription, and native home screen widgets on both platforms.

GearGenius's answer:

I kept leaving garages with the same feeling: a bill I could not check, work I was told was urgent, and no record of what had actually been done to my car. The mechanic knew everything and I knew nothing.

So I built the app I wanted, on my own. GearGenius keeps the full service history, tells you what is really due, reads fault codes with a Bluetooth adapter, and checks a garage's quote against what the car has already had done.

The goal is simple: you walk into any garage knowing your car better than anyone else, so you are the one in charge of it. Good mechanics welcome that. The rest find it much harder to take advantage.