# P.R.E.P. vs Odmaster

The clearest difference is rating: P.R.E.P. at 5.0 against Odmaster's 3.8. Odmaster's advantage is ratings volume (1.1K vs 1) and update cadence (every 3 weeks vs every 4 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.

P.R.E.P. holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Odmaster has 1.1K ratings behind it against 1, so its average is the more settled of the two.

P.R.E.P. ships an update every 4 months, Odmaster every 3 weeks. The most recent releases landed on September 15, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | P.R.E.P. | Odmaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/prep/id1479897244/reviews)** | [3.8 (1.1K ratings)](https://appshunter.io/ios/app/odmaster/id1512532413/reviews) |
| Number of ratings | 1 | **1.1K** |
| Positive reviews | — | 29.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 26 MB | 96 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Safeguard Risk Solutions](https://appshunter.io/developer/910796899) | [Guangzhou Billion Leiden Electronic Technology Co., Ltd.](https://appshunter.io/developer/1512532412) |

## What reviewers say

### P.R.E.P.

[App page](https://appshunter.io/ios/app/prep/id1479897244)

This mobile and web-based solution digitizes emergency plans, making them accessible and updatable in real-time. It helps users meet regulatory requirements and ensures critical information is readily available when needed.

**Highlights:** Digital emergency plans, Real-time updates, Mobile accessibility, Web-based solution, Customizable plans, Regulatory compliance

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is P.R.E.P. free?

P.R.E.P. is free to download, with no in-app purchases.

### Is Odmaster free?

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

### Which has better reviews, P.R.E.P. or Odmaster?

P.R.E.P. is rated higher. P.R.E.P. averages 5.0 out of 5 from 1 ratings, while Odmaster averages 3.8 from 1.1K ratings.

### Do P.R.E.P. or Odmaster have ads?

Neither P.R.E.P. nor Odmaster shows ads.

### Which is updated more often, P.R.E.P. or Odmaster?

P.R.E.P. ships an update every 4 months, and Odmaster every 3 weeks. Most recently, P.R.E.P. was updated on September 15, 2026 and Odmaster on September 30, 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.*