# U vs MaxiAP Diag

The clearest difference is rating: MaxiAP Diag at 2.9 against U's 1.9. U's advantage is ratings volume (125 vs 10) and review sentiment (11% vs 0%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. U sells 10 one-off in-app purchases and MaxiAP Diag sells 28 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

MaxiAP Diag holds the better App Store score, 2.9 against 1.9. That said, the two scores are not equally well evidenced: U has 125 ratings behind it against 10, so its average is the more settled of the two. Written reviews complicate that: 11% of U's written reviews are positive against 0% of MaxiAP Diag's, so the app with the better star average is not the one people write more warmly about.

U ships an update every 4 months, MaxiAP Diag every 5 months. The most recent releases landed on October 21, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | U | MaxiAP Diag |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.9 (125 ratings)](https://appshunter.io/ios/app/u-scan/id614809289/reviews) | **[2.9 (10 ratings)](https://appshunter.io/ios/app/maxiap-diag/id6463833580/reviews)** |
| Number of ratings | **125** | 10 |
| Positive reviews | **10.9% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 85 MB | 104 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Service Solutions US LLC](https://appshunter.io/developer/799425953) | [Autel Intelligent Technology Co., Ltd.](https://appshunter.io/developer/770747094) |

## What reviewers say

### U

[App page](https://appshunter.io/ios/app/u-scan/id614809289)

This app allows users to diagnose vehicle issues using their smartphone and a compatible adapter. It provides access to check engine, ABS, and airbag codes, along with definitions and potential solutions. Users can also view live data and clear diagnostic trouble codes.

**Highlights:** Read and erase OBD II codes, View live vehicle data, ABS and Airbag code access, Automatic vehicle identification, Vehicle history log, Powertrain enhanced data

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ABS Codes and definitions for Single Vehicle | $5.99 | one-time |
| ABS Code Vehicle 2 | $5.99 | one-time |
| Live Data and Manufacturer Specific Codes Vehicle 1 | $7.99 | one-time |
| Airbag codes and definitions for vehicle 1 | $7.99 | one-time |
| CodeConnect Repair Solutions for a Vehicle | $12.99 | one-time |
| Live Data and Manufacturer Specific Codes All Makes | $15.99 | one-time |
| CodeConnect Repair Solutions 1 Vehicle Upgrade to All | $27.99 | one-time |
| ABS Codes and Definitions All Vehicles | $29.99 | one-time |
| CodeConnect Repair Solutions All Vehicles | $39.99 | one-time |
| Airbag Codes and Definitions for All Makes | $39.99 | one-time |

**What reviewers like**

- ✅ Works well once successfully connected and configured
- 📊 Provides useful diagnostic data and error code reading
- 🔧 Helpful for identifying vehicle issues and troubleshooting
- 📱 Good app functionality for tech-savvy users who understand setup
- 💰 Reasonable price point for a diagnostic tool

**What reviewers complain about**

- 🔌 Severe Bluetooth connectivity issues - frequent disconnections
- 🔄 Extremely difficult and unreliable pairing process
- ⚠️ False 'vehicle in motion' errors when car is stationary
- 🚫 Cannot use live data while vehicle is moving (post-update restriction)
- 🐛 Firmware updates frequently fail or brick the device

**Reported bugs**

- Bluetooth connection drops frequently and won't reconnect
- App fails to recognize connected Bluetooth device
- Firmware update process freezes and becomes unresponsive
- False motion detection errors preventing app operation
- VIN entry not working or not submitting to garage

**Requested features**

- Enable live data monitoring while vehicle is in motion
- Improve Bluetooth auto-detection and automatic connection
- Add support for Australian vehicle models (Holden, Ford)
- Expand vehicle compatibility beyond 2013 models
- Implement dark mode for app interface


### MaxiAP Diag

[App page](https://appshunter.io/ios/app/maxiap-diag/id6463833580)

This management app helps DIY vehicle owners with repairs, maintenance, and customization. It offers diagnostic insights, common dashboard light explanations, and service functions for various car models. Monitor your vehicle's health and access repair shop information.

**Highlights:** Enhanced system diagnostics, OBDII test (read/erase codes, live data), Auto VIN vehicle identification, Vehicle health monitoring, DIY service functions (oil reset, TPMS), EV/Hybrid battery testing, Common dashboard light guide

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

**In-app purchases (28)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mazda for one year | $21.99 | one-time |
| Mini for one year | $21.99 | one-time |
| INFINITI for one year | $21.99 | one-time |
| Lamborghini for one year | $21.99 | one-time |
| Mitsubishi for one year | $21.99 | one-time |
| Cadillac for one year | $21.99 | one-time |
| Chrysler for one year | $21.99 | one-time |
| Scion for one year | $21.99 | one-time |
| Subaru for one year | $21.99 | one-time |
| GMC for one year | $21.99 | one-time |
| Buick for one year | $21.99 | one-time |
| Audi for one year | $21.99 | one-time |
| Acura for one year | $21.99 | one-time |
| Lexus for one year | $21.99 | one-time |
| Volkswagen for one year | $21.99 | one-time |
| Nissan for one year | $21.99 | one-time |
| Ford for one year | $21.99 | one-time |
| Honda for one year | $21.99 | one-time |
| BMW for one year | $21.99 | one-time |
| Chevrolet for one year | $21.99 | one-time |
| Dodge for one year | $21.99 | one-time |
| Hyundai for one year | $21.99 | one-time |
| Jeep for one year | $21.99 | one-time |
| Kia for one year | $21.99 | one-time |
| Mercedes-Benz for one year | $21.99 | one-time |
| Ram for one year | $21.99 | one-time |
| Toyota for one year | $21.99 | one-time |
| Volvo for one year | $21.99 | one-time |


## Frequently asked questions

### Is U free?

U is free to download, with in-app purchases available.

### Is MaxiAP Diag free?

MaxiAP Diag is free to download, with in-app purchases available.

### Which has better reviews, U or MaxiAP Diag?

MaxiAP Diag is rated higher. U averages 1.9 out of 5 from 125 ratings, while MaxiAP Diag averages 2.9 from 10 ratings.

### Do U or MaxiAP Diag have ads?

Neither U nor MaxiAP Diag shows ads.

### Which is updated more often, U or MaxiAP Diag?

U ships an update every 4 months, and MaxiAP Diag every 5 months. Most recently, U was updated on October 21, 2026 and MaxiAP Diag on October 20, 2026.

---

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