📈Last 7 days+39 installs — 40% slower than the week before (+65) · 6/day since Sep 26
🏆Among Auto & Vehicles appstop 16% by installs gained this week (58 peers growing)
⭐Rating★ 2.46 → 2.37 since Sep 26 — around the 2.5.1 update (Nov 2, 2026)
🛠Updatesactively updated · updated 8 days ago · every ~33 days (3 updates tracked)
Installs since launch
+230 installs
· +4 ratings
since Sep 26
Update history
2.5.1Nov 2, 2026 · seen Nov 5, 2026
- The Dragy DRG70 is now supported as an external GPS device<br>- Internal sensors: car heading changes are now allowed after initialization, until the dyno run starts<br>- Metric horsepower is now labelled PS instead of cv<br>- Slope correction: more accurate corrected results<br>- User interface improvements, more complete translations and bug fixes<br><br>Thanks for your feedback!
2.5.0Oct 18, 2026 · seen Oct 26, 2026
- The Dragy Pro and Dragy Lite are now supported as external GPS devices<br>- Your external GPS stays connected while you check your results or change a setting<br>- Slope correction improved: no more spikes on the power and torque curves, and more accurate Timed Run corrected times, including 60 ft, 1/8 and 1/4 mile<br><br>Thanks for your feedback!
2.4.5Aug 28, 2026 · seen Sep 26, 2026
What's new in 2.4.5<br><br>- New dyno tutorials for internal sensors and external GPS: new videos, plus step-by-step instructions in your language<br>- Fixed a crash when editing car profile parameters<br>- Corrected some text that could show a placeholder or stay untranslated<br>- START SESSION button no longer gets cut off on some displays or font sizes<br><br>Thanks for your feedback!
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PerfExpert - Car Dyno HP Test is an auto & vehicles app by PerfExpert with 10,000+ downloads (about 27K estimated). +39 installs in the last 7 days. Rated 2.4 from 866 ratings. Released Jul 3, 2011. Install growth, rank history, SDKs and ad networks.
From the store listing: “Know your car's true performance.
Turn your smartphone into a professional dyno. Measure the real horsepower and torque of your engine — within 2% of a chassis dynamometer — and time your car's acceleration. No OBD adapter, no cables, no expensive dyno sessions. Just mount your phone, accelerate, and get instant…”
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