Crankotix

One crank tells all.

Only for iPhone

Free · In‑App Purchases

iPhone

Check engine compression in 30 seconds with just your iPhone. No tools, no cables, diagnose any 3 or 4 cylinder engine before you buy or repair. Measure your engine's relative compression in seconds. No extra tools, no sensors, just your iPhone. TRY IT BEFORE YOU BUY , Get 3 free tests to see Crankotix in action Buying a used car? Diagnosing a rough engine? Don't guess. Don't dismantle. Don't pay for hours of workshop time. Crankotix is the world's first iPhone-based relative compression tester. Using nothing but your phone's built-in magnetometer, it reveals the health of any 3 or 4 cylinder engine - diesel or petrol- in less than 30 seconds. HOW IT WORKS 1. Remove the fuel pump fuse, disconnect camshaft sensors or disconnect the ignition system... (according to the engine technology) 2. Place your iPhone near the negative battery terminal 3. Crank the engine for 5 seconds (Follow the audio instructions) 4. Get instant relative compression results That's it. No probes. No Bluetooth dongles. No mechanical tools. Just your iPhone. WHY IT WORKS When the starter motor cranks your engine, every compression cycle creates a current spike. These current spikes generate magnetic field variations which your iPhone's magnetometer captures. Crankotix analyzes these signals and tells if the relative compressions are well balanced. WHO IT'S FOR * Used car buyers who want peace of mind before signing the check * DIY mechanics tired of mechanical compression testers and oily workshops * Independent garages looking for a fast pre-diagnostic tool * Anyone who values their engine KEY FEATURES - 10-second test, instant results - Works on diesel and petrol engines - Supports 3 and 4 cylinder engines - No additional hardware required - Visual gauge results - Optional countdown timer for hands-free testing - Built-in tutorial and audio guidance - Works on any iPhone with a magnetometer TRY IT BEFORE YOU BUY Get 3 free tests to see Crankotix in action on your own engine. Then unlock unlimited testing with a single one-time purchase. No subscriptions. No ads. IMPORTANT NOTES - Crankotix performs RELATIVE compression testing, comparing cylinders to each other - A minimum level of mechanical knowledge is required to prevent engine starting - Cylinder identification is not provided. If an imbalance is detected, a traditional cylinder-by-cylinder test is recommended JOIN A NEW GENERATION OF DIAGNOSTICS Mechanics have used compression testers for nearly a century. The procedure hasn't changed. The tools haven't evolved. Until now. Crankotix puts professional-grade engine diagnostics in your pocket. Whether you're saving thousands on a bad used car deal or streamlining your workshop, the difference is felt from the very first test. Download Crankotix today. Save time and money

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    Information

    Seller
    DENNIEL JEAN-FRANCOIS
    Size
    13.6 MB
    Category
    Productivity
    Compatibility
    Requires iOS 18.6 or later.
    • iPhone
      Requires iOS 18.6 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Jean-Francois DENNIEL
  • Privacy Policy
  • License Agreement