# WCSPermits vs OTR Diagnostics

The clearest difference is review sentiment: WCSPermits at 100% against OTR Diagnostics's 55%. WCSPermits also leads on rating (5.0 vs 4.0) and monetization model (free vs free with in-app purchases). OTR Diagnostics's advantage is update cadence (fortnightly vs every 3 months) and ratings volume (99 vs 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.

WCSPermits holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: OTR Diagnostics has 99 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 100% of WCSPermits's written reviews are positive against 55% of OTR Diagnostics's.

WCSPermits ships an update every 3 months, OTR Diagnostics fortnightly. The most recent releases landed on June 5, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | WCSPermits | OTR Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/wcspermits/id599857962/reviews)** | [4.0 (99 ratings)](https://appshunter.io/ios/app/otr-diagnostics/id1508165885/reviews) |
| Number of ratings | 6 | **99** |
| Positive reviews | **100.0% of reviews** | 55.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 43 MB | 266 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [WCS Permits](https://appshunter.io/developer/1448004779) | [OTR Performance](https://appshunter.io/developer/1508165884) |

## What reviewers say

### WCSPermits

[App page](https://appshunter.io/ios/app/wcspermits/id599857962)

Access essential oversize load permit attachments and related documents for the US and Canada. This app also connects you to pilot car services, permit information, and an online store for safety equipment.

**Highlights:** Oversize load permit attachments, US and Canadian province coverage, Email and print document options, Direct connection to pilot car services, Online equipment store access

**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 WCSPermits free?

WCSPermits 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, WCSPermits or OTR Diagnostics?

WCSPermits is rated higher. WCSPermits averages 5.0 out of 5 from 6 ratings, while OTR Diagnostics averages 4.0 from 99 ratings.

### Do WCSPermits or OTR Diagnostics have ads?

Neither WCSPermits nor OTR Diagnostics shows ads.

### Which is updated more often, WCSPermits or OTR Diagnostics?

WCSPermits ships an update every 3 months, and OTR Diagnostics fortnightly. Most recently, WCSPermits was updated on June 5, 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.*