# NaviGates vs Diesel Decoder

The clearest difference is rating: Diesel Decoder at 3.3 against NaviGates's 1.9. Diesel Decoder also leads on review sentiment (27% vs 11%) and chart position (#165 vs unranked). NaviGates's advantage is in-app purchases (none vs 1) and iOS requirement (13.4 vs 15.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Diesel Decoder sells 1 in-app purchase, starting at $29.99 per month. NaviGates asks for nothing beyond the download.

Diesel Decoder holds the better App Store score, 3.3 against 1.9. Both are backed by a comparable volume of ratings — 21 and 30 respectively. Written reviews point the same way: 11% of NaviGates's written reviews are positive against 27% of Diesel Decoder's.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on August 16, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | NaviGates | Diesel Decoder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.9 (21 ratings)](https://appshunter.io/ios/app/navigates/id1498404340/reviews) | **[3.3 (30 ratings)](https://appshunter.io/ios/app/diesel-decoder/id1529808675/reviews)** |
| Number of ratings | 21 | **30** |
| Positive reviews | 11.1% of reviews | **27.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#165** |
| Size | 14 MB | 43 MB |
| Requires iOS | **13.4** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gates Corporation](https://appshunter.io/developer/438346489) | [Diesel Laptops LLC](https://appshunter.io/developer/1345401052) |

## What reviewers say

### NaviGates

[App page](https://appshunter.io/ios/app/navigates/id1498404340)

Easily search for automotive aftermarket parts from a comprehensive catalog. Find specific belts, pulleys, and hoses by vehicle make/model, OE number, or product characteristics. Includes a barcode scanner for quick access to part details and technical information.

**Highlights:** Search by vehicle make/model, Search by OE or article number, Barcode scanner for instant part info, Compare similar products, Save recent search history, Filter by size and characteristics

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

**In-app purchases:** none


### Diesel Decoder

[App page](https://appshunter.io/ios/app/diesel-decoder/id1529808675)

**Currently charting:** #165 Top Grossing · Reference (US App Store)

This tool connects via Bluetooth to heavy commercial vehicles to read and clear diagnostic trouble codes. It displays live data, allows bi-directional commands, and generates shareable reports through a cloud platform. Requires dedicated hardware for operation.

**Highlights:** Read/clear Diagnostic Trouble Codes (DTCs), View live data parameters, Run bi-directional commands, Generate local and cloud reports, Share reports via Diesel Health Platform, Requires Diesel Decoder hardware

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decoder Professional Monthly | $29.99 | per month |


## Frequently asked questions

### Is NaviGates free?

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

### Is Diesel Decoder free?

Diesel Decoder is free to download, with in-app purchases available.

### Which has better reviews, NaviGates or Diesel Decoder?

Diesel Decoder is rated higher. NaviGates averages 1.9 out of 5 from 21 ratings, while Diesel Decoder averages 3.3 from 30 ratings.

### Do NaviGates or Diesel Decoder have ads?

Neither NaviGates nor Diesel Decoder shows ads.

### Which is updated more often, NaviGates or Diesel Decoder?

NaviGates ships an update every 3 months, and Diesel Decoder every 3 months. Most recently, NaviGates was updated on August 16, 2026 and Diesel Decoder on September 22, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*