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PerfExpert - Car Dyno HP Test

PerfExpert - Car Dyno HP Test

Measure Real HP & Torque

12 ratings
101 reviews
🔧 Utilities
⚽ Sports
$8.99
In-App Purchases

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Details

Released
August 8, 2012
Updated
October 19, 2026

Features

Developer

Claude JOSEPH ANGELIQUE
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About

Transform your smartphone into a powerful onboard dyno to measure your car's engine power and torque with high accuracy. Verify tuning, remaps, and upgrades with detailed reports and interactive charts. No external sensors or car connection required.

✓Engine power and torque measurement
✓0-60 mph and 0-100 km/h acceleration times
✓Quarter mile and 400m times
✓Detailed reports with interactive charts
✓Correction standards (DIN, SAE, ISO, JIS, CEE)
✓Customizable units
✓Export results as data files or images
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What's New in PerfExpert

2.4.4

October 19, 2026

- Atmospheric conditions are retrieved faster and more reliably, especially on mobile data - Various fixes and improvements Thanks for your feedback!

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Subscriptions & In-App Purchases

PerfExpert Pro

External GPS, custom logo, CSV, cloud sync, 5 cars/mo

$11.991 Month
How to cancel PerfExpert subscription ⁉️

User reviews

Most RecentHighest RatedLowest Rated

Parfait !

Plus qu’une simple application
Réel outil de performance pour développer sont véhicules
Peut aussi servir simplement servir de diagnostic pour voir si le véhicules tout est ok
Il faut juste être rigoureux sur la méthode d’utilisation
Je recommande à 100%
AAlexandro360

Precision

Couplé à RaceBox mini , 3 tirs effectués au même endroit sur du plat, résultat cohérent avec un écart de 4 ch et 9nm !score moyen 383ch/539nm, les chronos
valide la puissance /couple …stage 2+flex(s3 8p)
NNo493

Utilisation et suivi

Vraiment tres tres bien, appli très intéressante et pratique, permet de comparer les performance d’un véhicule avant et après modifications.
Suivi SAV très rapide et compétent
MCMT CHARV

Très satisfait des résultats

Développeur super pro et réactif, je recommande cette appli vraiment sérieuse
TThéo04

Response from developer

Merci Théo pour votre retour et bons tests!

Custom Dyno

I put intake and catback exhaust. Shop charge me 500$ CA for a run before and after the modifications. For 20$ I can see a gain 15HP. Just WOW 👍
11975Nismo

Response from developer

Thanks for the great review! Running a before/after on your own mods, without booking dyno time, is exactly what we built PerfExpert for. Enjoy your car and happy tuning!

See 96 more reviews

FAQ

What does PerfExpert do?

PerfExpert turns your smartphone into an onboard dyno and acceleration timer. It measures your car's engine power and torque with high accuracy, as well as acceleration times like 0-60 mph and quarter mile. It provides detailed reports with interactive charts for analysis.

How does the dyno test work without external sensors?

The app uses your phone's internal sensors, primarily the accelerometer, to capture acceleration data. By performing a full-throttle pull in a single gear on a flat, straight road, the app calculates power and torque. No connection to your car's OBD port or external sensors is needed for basic tests.

What are the key features of PerfExpert?

Key features include accurate horsepower and torque measurement with rev limiter detection and power loss modeling, timed run tests for various acceleration milestones, application of standard correction standards using real-time ambient conditions, and the ability to export results as data files or PNG images.

Is PerfExpert compatible with all cars?

The app is designed for manual gearboxes or automatic gearboxes with a manual mode. Dyno tests are not compatible with automatic gearboxes that lack a manual mode. You will need to create a car profile with key specifications like curb weight, tire size, and displacement.

What is the cost of PerfExpert?

The app is free to download and use for basic functions. However, advanced features or enhanced accuracy, such as rolling start dyno runs, may require in-app purchases or a Pro subscription, indicated by 'PerfExpert Pro su'.