# OTR Diagnostics vs SafeMode Rewards

The clearest difference is rating: OTR Diagnostics at 4.0 against SafeMode Rewards's 3.4. OTR Diagnostics also leads on ratings volume (99 vs 5) and update cadence (fortnightly vs every 5 weeks). SafeMode Rewards's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (12.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OTR Diagnostics holds the better App Store score, 4.0 against 3.4. That said, the two scores are not equally well evidenced: OTR Diagnostics has 99 ratings behind it against 5, so its average is the more settled of the two.

OTR Diagnostics ships an update fortnightly, SafeMode Rewards every 5 weeks. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | OTR Diagnostics | SafeMode Rewards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (99 ratings)](https://appshunter.io/ios/app/otr-diagnostics/id1508165885/reviews)** | [3.4 (5 ratings)](https://appshunter.io/ios/app/safemode-rewards/id1557710941/reviews) |
| Number of ratings | **99** | 5 |
| Positive reviews | 55.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 266 MB | 79 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OTR Performance](https://appshunter.io/developer/1508165884) | [Rehapp LTD](https://appshunter.io/developer/1489600494) |

## What reviewers say

### OTR Diagnostics

[App page](https://appshunter.io/ios/app/otr-diagnostics/id1508165885)

This app helps heavy-duty truck owners diagnose and resolve common issues like fault codes, regen problems, and derates. It provides plain-language explanations of error codes, allows for bi-directional commands to fix issues, and monitors live truck data to prevent downtime.

**Highlights:** AI-powered fault code explanation, Bi-directional commands for repairs, Reset active/inactive fault codes, Run forced DPF/SCR regens, Live data monitoring, Fault code history tracking

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

**In-app purchases:** none

**What reviewers like**

- 💰 Saves money on repairs
- 🛠️ Clears fault codes
- 🔄 Performs forced regens
- ✅ Works with various engines
- 👍 Easy to use

**What reviewers complain about**

- 💸 Overpriced
- 🐛 Buggy and unstable app
- 🔌 Frequent Bluetooth disconnects
- 📉 Updates cause problems
- ❌ Some features disappeared after updates

**Reported bugs**

- App constantly disconnects from device
- Generic code option disappeared
- Forced regen is no longer consistent
- AI assistant not working
- App asks to do things not available in app

**Requested features**

- Remember email address for login
- Allow offline functionality without data connection
- Add option to change speed
- More detailed diagnostic information
- Allow basic subscription to work on multiple VINs


### SafeMode Rewards

[App page](https://appshunter.io/ios/app/safemode-rewards/id1557710941)

This app analyzes your driving data to provide insights and tips for safer driving. It rewards you for good driving habits, helping you become a better driver. Take ownership of your driving data with detailed analytics.

**Highlights:** Safe driving rewards, Driving data analysis, Personalized driving tips, Ownership of driving data, Improve driving habits

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OTR Diagnostics free?

OTR Diagnostics is free to download, with no in-app purchases.

### Is SafeMode Rewards free?

SafeMode Rewards is free to download, with no in-app purchases.

### Which has better reviews, OTR Diagnostics or SafeMode Rewards?

OTR Diagnostics is rated higher. OTR Diagnostics averages 4.0 out of 5 from 99 ratings, while SafeMode Rewards averages 3.4 from 5 ratings.

### Do OTR Diagnostics or SafeMode Rewards have ads?

Neither OTR Diagnostics nor SafeMode Rewards shows ads.

### Which is updated more often, OTR Diagnostics or SafeMode Rewards?

OTR Diagnostics ships an update fortnightly, and SafeMode Rewards every 5 weeks. Most recently, OTR Diagnostics was updated on September 23, 2026 and SafeMode Rewards on September 10, 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.*