Comparison

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.

Head to head
About

Ratchet AI

Features
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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

About

Auto AI Diagnostics

Features
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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: โ€ข Real fault codes pulled straight from your car's computer โ€” engine and control modules โ€ข Automatic VIN read directly from your vehicle's ECU โ€ข AI-powered diagnosis with evidence and an action plan โ€” not just a code definition โ€ข Fault code descriptions verified against the web for accuracy โ€ข View Conditions: see the mileage, battery voltage, and speed recorded when each fault set โ€ข Live engine data โ€” RPM, coolant temp, battery voltage, throttle, and more โ€ข Odometer tracking with every scan โ€ข Scan history so you can track issues over time โ€ข DIY repair guidance and YouTube repair video suggestions for your exact vehicle โ€ข Ask AXEL follow-up questions about your specific car โ€ข Works with older, pre-2008 (K-line) vehicles too โ€ข 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

Ratchet AI4 screens
Auto AI Diagnostics4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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.

UpkeepUpdate frequency

Ratchet AI ships an update every 10 days, Auto AI Diagnostics weekly. Both last shipped on November 5, 2026.

Scorecard1 real difference ยท 5 level
Ratchet AI versus Auto AI Diagnostics: the parameters behind the verdict, then further details
ParameterRatchet AIAuto AI Diagnostics
PriceFreeFree
Update frequencyEvery 10 daysWeekly โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS15.115.1
Further details โ€” not scored
Size50 MB84 MB
Age rating4+4+
DeveloperMark TseMatthew Sheaffer

In-app purchases

4 purchases

Ratchet AI

Subscriptions4
  • Ratchet Pro Monthly$12.991 Month
  • Ratchet Unlimited Monthly$19.991 Month
  • Ratchet Pro Annual$89.991 Year
Show 1 more
  • Ratchet Unlimited Annual$149.991 Year
None

Auto AI Diagnostics

No in-app purchases

Questions

Is Ratchet AI free?
Ratchet AI is free to download, with in-app purchases available.
Is Auto AI Diagnostics free?
Auto AI Diagnostics is free to download, with no in-app purchases.
Do Ratchet AI or Auto AI Diagnostics have ads?
Neither Ratchet AI nor Auto AI Diagnostics shows ads.
Which is updated more often, Ratchet AI or Auto AI Diagnostics?
Ratchet AI ships an update every 10 days, and Auto AI Diagnostics weekly. Most recently, Ratchet AI was updated on November 5, 2026 and Auto AI Diagnostics on November 5, 2026.

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