Pistonly: AI Car Diagnostics

Scan codes, AI finds the fault

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

The AI now names a typical repair price for each cause and knows the weak spots of your model. 9,500 codes explained offline. Pistonly is an AI mechanic. Most OBD2 scanners show a code and leave you to Google it. Pistonly reads the code, checks it against your car's service history, names the likely cause, and tells you whether the car is safe to drive. THE AI DIAGNOSTICIAN • Add your car by VIN: make, model, generation and engine fill themselves in. • Add codes live from an adapter, or type in a dealer scan: PIWIS, ISTA, VCDS/ODIS, XENTRY, Techstream and more. • The AI works through your service history, ranks the likely causes, names a typical repair price for each and gives you an ordered checklist. No history yet? A few questions build one. • No code? Describe the sound, smell or vibration, and it names the usual causes and how to check. • See what actually fixed this code for owners of the same car, and what you already tried on yours. • Then keep asking: the chat knows this car's codes, history and last verdict. WHAT OIL, WHICH FUEL The approval your engine needs, not just the viscosity: capacity, interval, and the octane worth paying for on this engine. No adapter needed. Pro. PARAMETERS THE STANDARD SET NEVER SHOWS Diagnostic profiles for 216 models ship with the app, so Pistonly reads what generic OBD2 never exposes: the pressure in each individual tyre, steering angle, temperatures and voltages from modules generic mode never reaches. A Cayenne has 28 of these, a RAV4 has 215. Pro. WHAT IS THAT LIGHT ON MY DASHBOARD? Pick the symbol or describe it in your own words, even without an adapter. You get what it means on your car and how urgent it is. Pro. CAN I DRIVE IT? Every code carries a plain answer: drive on, drivable but fix it, or better not to drive. Your garage turns it into a health score out of 100. FREE REPAIRS YOU'RE OWED Pistonly checks the manufacturer's safety recalls for your model and year. A dealer does that work free of charge, whoever owns the car now, and most owners never find out. Campaigns marked "do not drive" are red. A FULL OBD2 TOOLBOX (with an ELM327 adapter) • Read the whole car in one pass, with a PDF report for your mechanic • Pre-purchase check: codes cleared before a viewing, reset monitors, mileage across modules and open recalls (Pro) • Control units: modules that used to stay silent now answer, and a scan resumes where it left off. • Live sensors, on-board monitors (Mode 06) and I/M readiness • Service functions, odometer cross-check, freeze frame and CSV logging FREE • 9,500 fault codes in plain English, with the can-I-drive verdict • Service reminders • Drive Mode: a full-screen dashboard for the phone mount, with lap timing • Recalls, weak spots of your model, health score, home screen widget, service book • Control units, live sensors, Mode 06, readiness, trip computer PISTONLY PRO • The AI engineer: codes, symptoms and sounds, dashboard lights, oil and fuel, follow-up chat • Manufacturer parameters and enhanced PIDs • Pre-purchase check and odometer rollback check • Service functions and CSV data logging • More than one car in your garage, each with its own history • Or bring your own Claude or Perplexity API key Monthly, annual, or a one-time lifetime unlock. Cancel anytime. PRIVATE BY DESIGN No account, no sign-up. Your garage, history and VIN stay on your device, and the VIN is never sent to our servers. Signed in to iCloud? Everything backs up there. Pistonly is advisory: strong hypotheses and a checklist, not a final verdict. Works with any ELM327-compatible Bluetooth OBD2 adapter. No adapter? Try the built-in demo. Marques and logos are trademarks of their owners; Pistonly is not affiliated with any manufacturer. Model profiles are derived from the OBDb community database under CC BY-SA 4.0. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://held-jackrabbit-8cc.notion.site/Pistonly-Privacy-Policy-3a0893c247bf80e7b6d4d17f590bd631

  • 5.0
    out of 5
    1 Ratings

THE AI NAMES THE PRICE Every likely cause in a verdict now comes with a typical repair price for your country: parts and labour at an independent shop. It is a ballpark, not a quote, but you know whether you are looking at a sensor or a gearbox before you call a mechanic. How likely each cause is is now said in words, as the AI judges it, instead of percentages that only reflected the order of the list. WEAK SPOTS OF YOUR MODEL The garage shows what owners of the same model and year report most often to the US safety regulator: which systems, how many reports, at what mileage, and the owners' own stories. The AI engineer takes these into account, and one tap asks it what they mean for your car. 9,500 CODES EXPLAINED The offline database grew from 590 to more than 9,500 standard codes, in English, German and Russian, including ABS, airbag and network codes that a module read finds. For ten makes there are also manufacturer meanings, marked as a reference that can differ by model. CAR HEALTH ON YOUR HOME SCREEN A new widget for the home and lock screen: health score, the most serious active code and the next service due. RECALLS IN YOUR LANGUAGE Recall titles name the system in your language, and "Explain with AI" retells the regulator's English text and tells you what to do. EASIER TO USE • Your codes fit on the first screen of the Codes tab again; the can-I-drive verdict folds into one line. • No adapter yet? Try the demo or type in codes right from the Codes tab. • Manufacturer parameters are grouped by module. • The fault log says what its checkmark does, and "Clear codes" no longer looks as inviting as "Read". • Trips, mileage and 0–100 timings use your language's units and number format.

The developer, Aliaksei Yelin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • User Content
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Seller
Aliaksei Yelin
Size
33.4 MB
Category
Utilities
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 2 more
  • English, German, Russian
Age Rating
4+
In-App Purchases
Yes
  • Pistonly Pro Lifetime $39.99
  • Pistonly Pro — Annual $29.99
  • Pistonly Pro — Monthly $4.99
Copyright
© 2025 Aliaksei Yelin