Ratchet AI vs Auto AI Diagnostics
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Ratchet AI
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Ratchet AI Mechanic helps you understand what is happening with your car before you spend money at a shop. Connect a supported OBD2 adapter, scan for fault codes, view live engine data, and ask Ratchet for plain-English diagnostic guidance. Ratchet can explain codes, symptoms, sensor readings, likely causes, repair difficulty, and fair price ranges. Terms of Use (EULA): https://www.tryratchet.com/tos Privacy Policy: https://www.tryratchet.com/privacy-policy
Auto AI Diagnostics
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Your check engine light is on. Now what? Auto AI Diagnostics turns your iPhone into an AI-powered car diagnostic tool. Plug a Bluetooth OBD2 adapter into the port under your dash, tap scan, and AXEL โ your AI shop foreman โ reads the fault codes straight from your car's computer and explains what's going on in plain English or Spanish: what's happening, how serious it is, whether it's a DIY fix or a shop job, and what to do next. FEATURES: โข Real fault codes pulled straight from your car's computer โ engine and control modules โข Automatic VIN read directly from your vehicle's ECU โข AI-powered diagnosis with evidence and an action plan โ not just a code definition โข Fault code descriptions verified against the web for accuracy โข View Conditions: see the mileage, battery voltage, and speed recorded when each fault set โข Live engine data โ RPM, coolant temp, battery voltage, throttle, and more โข Odometer tracking with every scan โข Scan history so you can track issues over time โข DIY repair guidance and YouTube repair video suggestions for your exact vehicle โข Ask AXEL follow-up questions about your specific car โข Works with older, pre-2008 (K-line) vehicles too โข The entire app in English or Spanish โ including AXEL's AI diagnosis. Switch anytime. WHAT YOU NEED: A Bluetooth OBD2 adapter (ELM327-compatible, sold separately). It plugs into the OBD port under the dashboard on the driver's side โ and on iPhone there's no pairing needed, the app finds it automatically. Works with most gas-powered cars and light trucks sold since 1996 (OBD2), including many pre-2008 K-line vehicles. Auto AI Diagnostics helps you understand your car and make informed decisions โ it's information and guidance, not a substitute for a professional inspection when safety is on the line.
Screenshots
Verdict
The clearest difference is in-app purchases: Auto AI Diagnostics at none against Ratchet AI's 4. On price, update cadence, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Ratchet AI sells 4 in-app purchases, starting at $12.99 per month. Auto AI Diagnostics asks for nothing beyond the download.
Ratchet AI ships an update every 10 days, Auto AI Diagnostics weekly. Both last shipped on November 5, 2026.
| Parameter | Ratchet AI | Auto AI Diagnostics |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days | Weekly โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPod | iPhone, iPad, iPod โ better |
| Requires iOS | 15.1 | 15.1 |
| Further details โ not scored | ||
| Size | 50 MB | 84 MB |
| Age rating | 4+ | 4+ |
| Developer | Mark Tse | Matthew Sheaffer |
In-app purchases
Ratchet AI
- Ratchet Pro Monthly$12.991 Month
- Ratchet Unlimited Monthly$19.991 Month
- Ratchet Pro Annual$89.991 Year
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- Ratchet Unlimited Annual$149.991 Year
Auto AI Diagnostics
No in-app purchases
Questions
Is Ratchet AI free?
Is Auto AI Diagnostics free?
Do Ratchet AI or Auto AI Diagnostics have ads?
Which is updated more often, Ratchet AI or Auto AI Diagnostics?
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