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PerfExpert

PerfExpert

Dyno and acceleration test

12 ratings
96 reviews
🔧 Utilities
⚽ Sports
$12.99
In-App Purchases

Details

  • Released
  • Updated
  • August 8, 2012
  • June 4, 2025

Developer

Claude JOSEPH ANGELIQUE
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PerfExpert screenshot #1 for iPhone
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iphone
ipad
🧾$9.99 - $79.99
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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
Show original description

What's New in PerfExpert

2.3.1

June 4, 2025

New in 2.3.1: • Fixed an issue where sensor rate and smoothing were incorrectly calculated when opening results created before version 2.3.0 New in 2.3.0: • Added support for external GPS devices: Racebox.ru, RaceBox Mini, Mini S, and Micro (PerfExpert Pro subscription required) • Added the ability to make a support request about a result • Improvements to internal sensors mode: • Removed mandatory calibration • Prevented START button if the car is not fully stopped • Improved accuracy • Bug fixes and stability improvements

More

Subscription plans

Pro for one month

Connection to external devices

$9.991 Month
7 Days trial
How to cancel PerfExpert subscription ⁉️

User reviews

Most RecentHighest RatedLowest Rated

Super

Je viens d’effectuer trois test avec le boîtier RaceBox mini.
Très pertinent.
Ktm shunterKtm shunter

Response from developer

Merci beaucoup pour votre retour ! Content que le combo PerfExpert + RaceBox Mini vous donne satisfaction 👍

Não funciona

Infelizmente não funciona para carros elétricos
Mdca546Mdca546

Response from developer

Olá Mdca546, Obrigado pelo feedback. Infelizmente, o PerfExpert só funciona com veículos a combustão — isso está indicado na descrição do app na loja. O motivo: o app calcula a potência usando os regimes do motor (RPM) e as relações de transmissão, o que não se aplica aos motores elétricos. O modo "Timed Run" (tempos de aceleração) funciona com qualquer veículo, inclusive elétricos! Obrigado pela compreensão 🙏

Null

Je recommande pas acheter pas vous voulez savoir la puissance de votre voiture faite un passage au banc
nahel35160nahel35160

Response from developer

Bonjour nahel35160, Merci pour votre retour. PerfExpert offre une précision de l'ordre de 2% lorsque la procédure est bien respectée — suffisant pour comparer avant/après une modification ou valider une reprogrammation. Si vous avez rencontré des résultats incohérents, n'hésitez pas à nous contacter via l'app (Résultat -> Aide ) — on peut analyser vos données et vous aider à obtenir des mesures fiables. Bonne route 🙏

Muito top

Aplicativo top de mais! Se colocar todos os dados que são pedidos corretamente, o aplicativo marca a potencia muito próxima da real! Passei meu carro no dinamômetro e veio 132cv de roda, no aplicativo ao fazer o teste marcou 131,6cv.
Fabricio DemolinerFabricio Demoliner

Au top

Je la possède depuis des années. C’est top avec 10 aine de véhicules. Manque parfois des infos, suffit de chercher sur Google
Seb DLISeb DLI

Response from developer

Merci pour ton retour positif!

See 91 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'.