# OTR Diagnostics vs Hotel4box SelfServe

The clearest difference is rating: Hotel4box SelfServe at 5.0 against OTR Diagnostics's 4.0. OTR Diagnostics's advantage is update cadence (fortnightly vs every 4 months) and ratings volume (99 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Hotel4box SelfServe 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 1, so its average is the more settled of the two.

OTR Diagnostics ships an update fortnightly, Hotel4box SelfServe every 4 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | OTR Diagnostics | Hotel4box SelfServe |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (99 ratings)](https://appshunter.io/ios/app/otr-diagnostics/id1508165885/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hotel4box-selfserve/id6523426974/reviews)** |
| Number of ratings | **99** | 1 |
| Positive reviews | 55.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Free | Free |
| Size | 268 MB | 20 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OTR Performance](https://appshunter.io/developer/1508165884) | [MT Express USA, LLC](https://appshunter.io/developer/632013910) |

## What reviewers say

### OTR Diagnostics

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

This diagnostic tool helps heavy-duty truck owners understand and resolve fault codes, perform crucial maintenance tasks like regens, and monitor live engine data. It aims to reduce downtime and avoid costly dealer visits by empowering users with detailed insights and control over their vehicle's systems.

**Highlights:** Reset active and inactive fault codes, Perform forced DPF/SCR regens, Understand fault codes in plain language, Monitor live engine data, Track fault code history, Bi-directional commands for repairs

**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


### Hotel4box SelfServe

[App page](https://appshunter.io/ios/app/hotel4box-selfserve/id6523426974)

Manage your shipments and boxes with ease. Create new shipments, check on prepared boxes, and get real-time updates on package information. This app simplifies the entire shipping process.

**Highlights:** Manage shipments and boxes, Create new shipments, Check prepared boxes, Real-time updates, Access product details, Control package information

**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 Hotel4box SelfServe free?

Hotel4box SelfServe is free to download, with no in-app purchases.

### Which has better reviews, OTR Diagnostics or Hotel4box SelfServe?

Hotel4box SelfServe is rated higher. OTR Diagnostics averages 4.0 out of 5 from 99 ratings, while Hotel4box SelfServe averages 5.0 from 1 ratings.

### Do OTR Diagnostics or Hotel4box SelfServe have ads?

Neither OTR Diagnostics nor Hotel4box SelfServe shows ads.

### Which is updated more often, OTR Diagnostics or Hotel4box SelfServe?

OTR Diagnostics ships an update fortnightly, and Hotel4box SelfServe every 4 months. Most recently, OTR Diagnostics was updated on October 29, 2026 and Hotel4box SelfServe on October 24, 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.*