# OBD2 Gauges vs Diagnose AI

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.

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.

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.

## The numbers

| Metric | OBD2 Gauges | Diagnose AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/diagnose-ai/id6773086171/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 4 months |
| Monetization | — | Freemium |
| Size | 52 MB | 44 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Edward Williams](https://appshunter.io/developer/1639798187) | [Shivansh Chhhabra](https://appshunter.io/developer/6773086173) |

## What reviewers say

### OBD2 Gauges

[App page](https://appshunter.io/ios/app/obd2-gauges/id6759607610)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads (Monthly) | $3.99 | per month |
| Remove Ads (Lifetime) | $24.99 | one-time |


### Diagnose AI

[App page](https://appshunter.io/ios/app/diagnose-ai/id6773086171)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $2.99 | per month |
| Pro Yearly | $19.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*