# OTR Diagnostics vs Eldtrex Driver

The clearest difference is review sentiment: OTR Diagnostics at 55% against Eldtrex Driver's 0%. OTR Diagnostics also leads on rating (4.0 vs 1.8) and ratings volume (99 vs 5). Eldtrex Driver's advantage is monetization model (free vs free with in-app purchases). 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 1.8. 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. Written reviews point the same way: 55% of OTR Diagnostics's written reviews are positive against 0% of Eldtrex Driver's.

OTR Diagnostics ships an update fortnightly, Eldtrex Driver every 5 weeks. The most recent releases landed on October 6, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | OTR Diagnostics | Eldtrex Driver |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (99 ratings)](https://appshunter.io/ios/app/otr-diagnostics/id1508165885/reviews)** | [1.8 (5 ratings)](https://appshunter.io/ios/app/eldtrex-driver/id6757172933/reviews) |
| Number of ratings | **99** | 5 |
| Positive reviews | **55.2% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 267 MB | 46 MB |
| Requires iOS | 17.6 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OTR Performance](https://appshunter.io/developer/1508165884) | [Innovative Solutions And Global Support Private Limited](https://appshunter.io/developer/1766881210) |

## 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


### Eldtrex Driver

[App page](https://appshunter.io/ios/app/eldtrex-driver/id6757172933)

This application helps commercial drivers meet FMCSA Hours of Service (HOS) requirements with an electronic logging device. It offers reliable logging, real-time tracking, and seamless communication for simplified daily operations and compliance.

**Highlights:** FMCSA-compliant electronic logbook, Automatic drive time recording, Duty status changes support, HOS rule sets with violation alerts, Daily log review and certification, Roadside inspection-ready reports, GPS-based location tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is OTR Diagnostics free?

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

### Is Eldtrex Driver free?

Eldtrex Driver is free to download, with no in-app purchases.

### Which has better reviews, OTR Diagnostics or Eldtrex Driver?

OTR Diagnostics is rated higher. OTR Diagnostics averages 4.0 out of 5 from 99 ratings, while Eldtrex Driver averages 1.8 from 5 ratings.

### Do OTR Diagnostics or Eldtrex Driver have ads?

Neither OTR Diagnostics nor Eldtrex Driver shows ads.

### Which is updated more often, OTR Diagnostics or Eldtrex Driver?

OTR Diagnostics ships an update fortnightly, and Eldtrex Driver every 5 weeks. Most recently, OTR Diagnostics was updated on October 6, 2026 and Eldtrex Driver on September 25, 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.*