AutoDiag is a practical offline tool for mechanics.
It includes the most common OBD-II error codes with causes, symptoms and diagnostic steps, plus engine codes from the vehicle registration document (P.5 field). For each engine code it shows the main car models and recommended timing tools with purchase links.
It also has a local AI assistant to help interpret codes quickly. No subscription required.
SynapseOS unifies calendar, tasks, notes, habits, finance and health into one place. An AI that knows your full context gives daily briefings and anticipates what you need. Privacy-first (data stays on device), works offline, installable as PWA. Stop switching between 6 apps.