Comparison

OBD2 Gauges 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

OBD2 Gauges

Features
Read full description

OBD2 Gauges connects to your vehicle's OBD2 port via Bluetooth and displays real-time engine data as beautiful, customizable gauges. Features: - AI Vehicle Health: explanations of telemetry and trouble codes, recommended checks, and watch points - Saved health reports you can revisit offline - AI Lite: on-device analysis on compatible devices; AI Pro: on-device plus cloud analysis with explicit consent - Realistic gauge materials, four additional bezel finishes, and ten bezel shapes - Real-time speed, RPM, boost/vacuum, oil temperature, water temperature, intake air temperature, and fuel level gauges - Multiple gauge themes inspired by iconic vehicles: Supra Stock, Supra TRD, Nismo, Audi RS, G35 Rev-Up, and more - 100+ OBD2 parameters supported - Clean, modern interface with dark and light modes - Works with any ELM327-compatible Bluetooth OBD2 adapter - Customizable gauge layouts — single, dual, quad, or full dashboard views - On-device AI keeps analysis on your device. Optional cloud AI sends a telemetry summary to Google only after your consent. Connect your OBD2 Bluetooth adapter, pair it with your device, and launch OBD2 Gauges to see your engine data come alive. Requires an ELM327-compatible Bluetooth Low Energy (BLE) OBD2 adapter and a vehicle with an OBD2 port (1996+ model year). Optional Subscription - Remove Ads (Monthly): auto-renewing subscription that removes all ads while active. Cancel anytime in Settings → Apple ID → Subscriptions. - Remove Ads (Lifetime): one-time purchase that removes all ads permanently. - AI Lite: monthly or lifetime access to ad-free, on-device AI Health on compatible devices. - AI Pro: monthly or lifetime access to ad-free AI Health with cloud analysis when on-device AI is unavailable. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Terms of Use: https://www.lightcycleconsulting.com/terms-of-service Privacy Policy: https://www.lightcycleconsulting.com/privacy-policy AI Health requires an AI Lite or AI Pro purchase. On-device AI depends on device and model availability. Cloud AI requires internet access, consent, and AI Pro, with up to 10 cloud analyses per 24-hour window. AI guidance is informational and does not replace a qualified mechanic.

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

OBD2 Gauges4 screens
Diagnose AI4 screens

Verdict

The call

The clearest difference is update cadence: OBD2 Gauges at every 3 days against Diagnose AI's every 4 months. On price, ads, in-app purchases and device support 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. OBD2 Gauges sells 2 in-app purchases, starting at $3.99 per month and Diagnose AI sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

OBD2 Gauges ships an update every 3 days, Diagnose AI every 4 months. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 8 level
OBD2 Gauges versus Diagnose AI: the parameters behind the verdict, then further details
ParameterOBD2 GaugesDiagnose AI
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 days — betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size52 MB44 MB
Age rating17+4+
DeveloperEdward WilliamsShivansh Chhhabra

In-app purchases

2 purchases

OBD2 Gauges

Subscriptions1
  • Remove Ads (Monthly)$3.991 Month
One-time1
  • Remove Ads (Lifetime)$24.99
2 purchases

Diagnose AI

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

Questions

Is OBD2 Gauges free?
OBD2 Gauges is free to download, with in-app purchases available.
Is Diagnose AI free?
Diagnose AI is free to download, with in-app purchases available.
Do OBD2 Gauges or Diagnose AI have ads?
Neither OBD2 Gauges nor Diagnose AI shows ads.
Which is updated more often, OBD2 Gauges or Diagnose AI?
OBD2 Gauges ships an update every 3 days, and Diagnose AI every 4 months. Most recently, OBD2 Gauges was updated on November 9, 2026 and Diagnose AI on October 31, 2026.

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