# LD Mobile(CanDo) vs OTR Diagnostics

The clearest difference is monetization model: LD Mobile(CanDo) at free against OTR Diagnostics's free with in-app purchases. LD Mobile(CanDo) also leads on iOS requirement (12.0 vs 17.6). OTR Diagnostics's advantage is ratings volume (99 vs 4). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.0 for LD Mobile(CanDo) against 4.0 for OTR Diagnostics. That said, the two scores are not equally well evidenced: OTR Diagnostics has 99 ratings behind it against 4, so its average is the more settled of the two.

LD Mobile(CanDo) ships an update every 4 weeks, OTR Diagnostics fortnightly. The most recent releases landed on June 1, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | LD Mobile(CanDo) | OTR Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/ld-mobilecando/id1484898701/reviews) | [4.0 (99 ratings)](https://appshunter.io/ios/app/otr-diagnostics/id1508165885/reviews) |
| Number of ratings | 4 | **99** |
| Positive reviews | — | 55.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 266 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cando International Inc.](https://appshunter.io/developer/1208370212) | [OTR Performance](https://appshunter.io/developer/1508165884) |

## What reviewers say

### LD Mobile(CanDo)

[App page](https://appshunter.io/ios/app/ld-mobilecando/id1484898701)

This utility app turns your iOS device into a diagnostic tool for light duty trucks. It supports major brands like Ford, Chevy, and Dodge, offering features like code reading, live data graphing, and DPF regeneration.

**Highlights:** Code scanner for light duty trucks, DPF reset and regeneration, Live data with graphing, Access to Engine, Transmission, ABS, SRS modules, Supports Ford, Chevy, Dodge, Toyota, Nissan, Honda

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is LD Mobile(CanDo) free?

LD Mobile(CanDo) is free to download, with no in-app purchases.

### Is OTR Diagnostics free?

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

### Which has better reviews, LD Mobile(CanDo) or OTR Diagnostics?

LD Mobile(CanDo) and OTR Diagnostics are both rated 4.0 out of 5 on the App Store, from 4 and 99 ratings respectively.

### Do LD Mobile(CanDo) or OTR Diagnostics have ads?

Neither LD Mobile(CanDo) nor OTR Diagnostics shows ads.

### Which is updated more often, LD Mobile(CanDo) or OTR Diagnostics?

LD Mobile(CanDo) ships an update every 4 weeks, and OTR Diagnostics fortnightly. Most recently, LD Mobile(CanDo) was updated on June 1, 2026 and OTR Diagnostics on September 23, 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.*