# Dump Truck Math vs OTR Diagnostics

The clearest difference is review sentiment: Dump Truck Math at 100% against OTR Diagnostics's 55%. Dump Truck Math also leads on rating (4.9 vs 4.0) and monetization model (free vs free with in-app purchases). OTR Diagnostics's advantage is ratings volume (99 vs 16). 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.

Dump Truck Math holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: OTR Diagnostics has 99 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 100% of Dump Truck Math's written reviews are positive against 55% of OTR Diagnostics's.

## The numbers

| Metric | Dump Truck Math | OTR Diagnostics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (16 ratings)](https://appshunter.io/ios/app/dump-truck-math/id1370342359/reviews)** | [4.0 (99 ratings)](https://appshunter.io/ios/app/otr-diagnostics/id1508165885/reviews) |
| Number of ratings | 16 | **99** |
| Positive reviews | **100.0% of reviews** | 55.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 267 MB |
| Requires iOS | **10.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MyLogic, Inc.](https://appshunter.io/developer/1370342358) | [OTR Performance](https://appshunter.io/developer/1508165884) |

## What reviewers say

### Dump Truck Math

[App page](https://appshunter.io/ios/app/dump-truck-math/id1370342359)

This app helps construction professionals accurately calculate trucking rates, determine the number of trucks needed for a project, and compare haul costs. It simplifies complex calculations for estimators, truck owners, and foremen to ensure jobs are completed on time and within budget.

**Highlights:** Rate per Ton or Cubic Yard calculator, Trucks Needed calculation, Haul Difference cost comparison, Tolls and travel time factoring, Loading and unloading time inclusion

**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 Dump Truck Math free?

Dump Truck Math 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, Dump Truck Math or OTR Diagnostics?

Dump Truck Math is rated higher. Dump Truck Math averages 4.9 out of 5 from 16 ratings, while OTR Diagnostics averages 4.0 from 99 ratings.

### Do Dump Truck Math or OTR Diagnostics have ads?

Neither Dump Truck Math nor OTR Diagnostics shows ads.

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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.*