Comparison

Auto AI Diagnostics vs Diagnose AI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Auto AI Diagnostics

Features
Read full description

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

About

Diagnose AI

This app transforms your phone into an automotive health assistant. It connects to your car's OBD-II system via Bluetooth to translate fault codes into plain English, offering AI-powered diagnostics and DIY action plans. Manage multiple vehicles and review scan history for informed repairs.

Highlights
  • AI-powered plain-English diagnostics
  • One-tap Bluetooth OBD-II scanning
  • DIY action plans and guidance
  • Multi-vehicle garage management
  • Full scan history
  • Premium dark automotive interface
Features
Read full description

Know what's your car is telling you Bruh.. and what to check before you buy one. Diagnose AI turns OBD-II fault codes, warning lights, recall information, and guided vehicle checks into clear findings you can act on. FOR YOUR CAR • Connect a compatible Bluetooth OBD-II adapter • Understand stored and pending trouble codes in plain English • See how urgent a problem may be and what to check next • Save your vehicles and scan history • Ask follow-up questions about a completed scan BEFORE YOU BUY • Enter a VIN to review available recall campaigns • Follow a guided visual inspection • Add supported OBD-II findings when available • See what needs attention, what needs review, and what was not checked • Export a Buyer Report to keep or share No adapter yet? No Worries Try the demo scan and explore the experience without connecting to a vehicle. Diagnose AI provides informational guidance and does not replace a qualified mechanic, professional pre-purchase inspection, official recall-repair confirmation, or vehicle history report. Vehicle and adapter support vary. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Auto AI Diagnostics4 screens
Diagnose AI4 screens

Verdict

The call

The clearest difference is in-app purchases: Auto AI Diagnostics at none against Diagnose AI's 2. Auto AI Diagnostics also leads on update cadence (weekly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Diagnose AI sells 2 in-app purchases, starting at $2.99 per month. Auto AI Diagnostics asks for nothing beyond the download.

UpkeepUpdate frequency

Auto AI Diagnostics ships an update weekly, Diagnose AI every 4 months. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

Scorecard2 real differences · 7 level
Auto AI Diagnostics versus Diagnose AI: the parameters behind the verdict, then further details
ParameterAuto AI DiagnosticsDiagnose AI
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyWeekly — betterEvery 4 months
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size84 MB44 MB
Age rating4+4+
DeveloperMatthew SheafferShivansh Chhhabra

In-app purchases

None

Auto AI Diagnostics

No in-app purchases

2 purchases

Diagnose AI

Subscriptions2
  • Pro Monthly$2.991 Month
  • Pro Yearly$19.991 Year

Questions

Is Auto AI Diagnostics free?
Auto AI Diagnostics is free to download, with no in-app purchases.
Is Diagnose AI free?
Diagnose AI is free to download, with in-app purchases available.
Do Auto AI Diagnostics or Diagnose AI have ads?
Neither Auto AI Diagnostics nor Diagnose AI shows ads.
Which is updated more often, Auto AI Diagnostics or Diagnose AI?
Auto AI Diagnostics ships an update weekly, and Diagnose AI every 4 months. Most recently, Auto AI Diagnostics was updated on October 24, 2026 and Diagnose AI on October 23, 2026.

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