# U vs Mac Tools Smart Tools

The clearest difference is rating: Mac Tools Smart Tools at 4.6 against U's 1.9. Mac Tools Smart Tools also leads on in-app purchases (none vs 10) and review sentiment (25% vs 11%). U's advantage is iOS requirement (8.0 vs 13.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. U sells 10 one-off in-app purchases. Mac Tools Smart Tools asks for nothing beyond the download.

Mac Tools Smart Tools holds the better App Store score, 4.6 against 1.9. Both are backed by a comparable volume of ratings — 125 and 66 respectively. Written reviews point the same way: 11% of U's written reviews are positive against 25% of Mac Tools Smart Tools's.

U ships an update every 4 months, Mac Tools Smart Tools every 2 months. Both last shipped on October 8, 2026.

## The numbers

| Metric | U | Mac Tools Smart Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.9 (125 ratings)](https://appshunter.io/ios/app/u-scan/id614809289/reviews) | **[4.6 (66 ratings)](https://appshunter.io/ios/app/mac-tools-smart-tools/id1438193376/reviews)** |
| Number of ratings | **125** | 66 |
| Positive reviews | 10.9% of reviews | **25.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 85 MB | 21 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Service Solutions US LLC](https://appshunter.io/developer/799425953) | [Stanley Black & Decker, Inc.](https://appshunter.io/developer/414050137) |

## 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


### Mac Tools Smart Tools

[App page](https://appshunter.io/ios/app/mac-tools-smart-tools/id1438193376)

This app allows users to precisely control and manage their smart torque wrenches. Set target torque, create custom tightening sequences, and record measurements for audit. Generate reports and track wrench calibration for improved efficiency and accuracy.

**Highlights:** Set target torque values, Create and save torque sequences, Record and export torque measurements, Track wrench calibration dates, Support for multiple torque units, Angle measurement capabilities

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

**In-app purchases:** none


## Frequently asked questions

### Is U free?

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

### Is Mac Tools Smart Tools free?

Mac Tools Smart Tools is free to download, with no in-app purchases.

### Which has better reviews, U or Mac Tools Smart Tools?

Mac Tools Smart Tools is rated higher. U averages 1.9 out of 5 from 125 ratings, while Mac Tools Smart Tools averages 4.6 from 66 ratings.

### Do U or Mac Tools Smart Tools have ads?

Neither U nor Mac Tools Smart Tools shows ads.

### Which is updated more often, U or Mac Tools Smart Tools?

U ships an update every 4 months, and Mac Tools Smart Tools every 2 months. Most recently, U was updated on October 8, 2026 and Mac Tools Smart Tools on October 8, 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.*