# Odmaster vs TOPDON CarPal

The clearest difference is in-app purchases: Odmaster at none against TOPDON CarPal's 18. Odmaster also leads on ratings volume (1.1K vs 41). TOPDON CarPal's advantage is review sentiment (39% vs 29%) and iOS requirement (11 vs 14.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. TOPDON CarPal sells 18 in-app purchases, starting at $4.99 per month. Odmaster asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.8 for Odmaster against 3.7 for TOPDON CarPal. That said, the two scores are not equally well evidenced: Odmaster has 1.1K ratings behind it against 41, so its average is the more settled of the two. Written reviews are what separate them: 29% of Odmaster's written reviews are positive against 39% of TOPDON CarPal's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Odmaster | TOPDON CarPal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (1.1K ratings)](https://appshunter.io/ios/app/odmaster/id1512532413/reviews)** | [3.7 (41 ratings)](https://appshunter.io/ios/app/topdon-carpal/id6478524922/reviews) |
| Number of ratings | **1.1K** | 41 |
| Positive reviews | 29.1% of reviews | **39.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 96 MB | 1.6 GB |
| Requires iOS | 14.0 | **11** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Guangzhou Billion Leiden Electronic Technology Co., Ltd.](https://appshunter.io/developer/1512532412) | [HK TOPDON TECHNOLOGY Co., LIMITED](https://appshunter.io/developer/1846276192) |

## What reviewers say

### Odmaster

[App page](https://appshunter.io/ios/app/odmaster/id1512532413)

This application allows users to program various radio models directly from their mobile phones, eliminating the need for a computer. It offers a convenient and portable solution for radio programming and includes a community feature for sharing content and interacting with other users.

**Highlights:** Program radio with mobile phone, Supports multiple radio models, Convenient and portable programming, Community sharing and interaction, Help Center and direct support

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Convenient mobile programming
- 💡 Helpful community features

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🔒 Poor account registration process
- 🔋 High battery drain
- 👎 Unreliable Bluetooth connectivity

**Reported bugs**

- Unable to read or write radio data
- Inconsistent behavior across iOS versions
- Login and account issues

**Requested features**

- Support for more radio models
- Ability to save and load custom channel configurations
- Improved user interface and navigation


### TOPDON CarPal

[App page](https://appshunter.io/ios/app/topdon-carpal/id6478524922)

Transform your phone into a powerful car diagnostic tool with this app. It offers comprehensive system scans, full OBDII functionality, and specialized maintenance services for a wide range of vehicle brands. Easily identify issues, access repair data, and generate detailed reports wirelessly.

**Highlights:** Full System Diagnosis, Full OBD2 Functions, 6 Special Maintenance Functions, AutoVIN Vehicle Identification, Wireless Bluetooth Connection, Diagnostic Report Generation

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

**In-app purchases (18)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Auto-renewal | $4.99 | per month |
| Renewal Bundle | $29.99 | per year |
| Nissan Gateway 1-Token | $11.99 | one-time |
| Renault Gateway  1-Token | $11.99 | one-time |
| VW SFD Gateway  1-Token | $11.99 | one-time |
| FCA Gateway  1-Token | $11.99 | one-time |
| FCA Gateway 30-day Access | $34.99 | one-time |
| VW SFD Gateway 30-day Access | $34.99 | one-time |
| Renault Gateway 5 Tokens | $116.99 | one-time |
| Nissan Gateway 5 Tokens (EU only) | $116.99 | one-time |
| Renault Gateway 5 Tokens | $147.99 | one-time |
| VW SFD Gateway 1-year Access | $199.99 | one-time |
| Renault Gateway 10 Tokens | $209.99 | one-time |
| Nissan Gateway 10 Tokens (EU only) | $209.99 | one-time |
| Nissan Gateway 10 Tokens (EU only) | $254.99 | one-time |
| Renault Gateway 20 Tokens | $379.00 | one-time |
| Nissan Gateway 20 Tokens (EU only) | $379.00 | one-time |
| Nissan Gateway 20 Tokens (EU only) | $464.99 | one-time |


## Frequently asked questions

### Is Odmaster free?

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

### Is TOPDON CarPal free?

TOPDON CarPal is free to download, with in-app purchases available.

### Which has better reviews, Odmaster or TOPDON CarPal?

Odmaster is rated higher. Odmaster averages 3.8 out of 5 from 1.1K ratings, while TOPDON CarPal averages 3.7 from 41 ratings.

### Do Odmaster or TOPDON CarPal have ads?

Neither Odmaster nor TOPDON CarPal shows ads.

### Which is updated more often, Odmaster or TOPDON CarPal?

Odmaster ships an update every 3 weeks, and TOPDON CarPal every 3 weeks. Most recently, Odmaster was updated on September 24, 2026 and TOPDON CarPal on September 25, 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.*