📈Last 7 days+22 installs — 27% slower than the week before (+30) · 3/day since Oct 7
🏆Among Books & Reference appstop 20% by installs gained this week (312 peers growing)
🛠Updatesdormant · updated 391 days ago
Installs since launch
+100 installs
since Oct 7
Update history
2.5Oct 19, 2025 · seen Oct 20, 2026
1. Fully redesigned as a PDF viewer<br>2. Better navigation & zoom controls<br>3. Clean interface and faster performance<br>4. New educational contents<br>5. Improved offline support
Only the current version so far — new entries appear as the app ships updates.
Auto Engine System PDF is a books & reference app by TroneStudio with 5,000+ downloads (about 6.5K estimated). +22 installs in the last 7 days. Released Apr 20, 2017. Install growth, rank history, SDKs and ad networks.
From the store listing: “Learn automotive engine systems with interactive PDF viewer and tools.”