# Odmaster vs ShieldGPS

The clearest difference is rating: ShieldGPS at 4.9 against Odmaster's 3.8. Odmaster's advantage is ratings volume (1.1K vs 17) and update cadence (every 3 weeks vs every 2 months). 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.

ShieldGPS holds the better App Store score, 4.9 against 3.8. That said, the two scores are not equally well evidenced: Odmaster has 1.1K ratings behind it against 17, so its average is the more settled of the two.

Odmaster ships an update every 3 weeks, ShieldGPS every 2 months. The most recent releases landed on September 24, 2026 and July 21, 2026 respectively.

## The numbers

| Metric | Odmaster | ShieldGPS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (1.1K ratings)](https://appshunter.io/ios/app/odmaster/id1512532413/reviews) | **[4.9 (17 ratings)](https://appshunter.io/ios/app/shieldgps/id1568008150/reviews)** |
| Number of ratings | **1.1K** | 17 |
| Positive reviews | 29.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 96 MB | 13 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Guangzhou Billion Leiden Electronic Technology Co., Ltd.](https://appshunter.io/developer/1512532412) | [OG Systems, LLC (CA)](https://appshunter.io/developer/1325401938) |

## 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


### ShieldGPS

[App page](https://appshunter.io/ios/app/shieldgps/id1568008150)

Monitor the real-time location and history of your GPS trackers. Receive alerts for movement, speed, and status changes, and set up geofences for important area notifications. Some devices also offer mileage and driving behavior tracking.

**Highlights:** Real-time GPS tracker location, Location history with playback, Map and satellite views, Movement and speed alerts, Geofence creation and alerts, Mileage and driving behavior tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Odmaster free?

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

### Is ShieldGPS free?

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

### Which has better reviews, Odmaster or ShieldGPS?

ShieldGPS is rated higher. Odmaster averages 3.8 out of 5 from 1.1K ratings, while ShieldGPS averages 4.9 from 17 ratings.

### Do Odmaster or ShieldGPS have ads?

Neither Odmaster nor ShieldGPS shows ads.

### Which is updated more often, Odmaster or ShieldGPS?

Odmaster ships an update every 3 weeks, and ShieldGPS every 2 months. Most recently, Odmaster was updated on September 24, 2026 and ShieldGPS on July 21, 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.*