# RET Master vs VIAVI OSPREY

The clearest difference is update cadence: VIAVI OSPREY at every 2 months against RET Master's every 4 months. RET Master's advantage is iOS requirement (9.3 vs 15.6). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for RET Master against 5.0 for VIAVI OSPREY. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

RET Master ships an update every 4 months, VIAVI OSPREY every 2 months. Both last shipped on October 10, 2026.

## The numbers

| Metric | RET Master | VIAVI OSPREY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/ret-master/id877778973/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/viavi-osprey/id6749333786/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 63 MB | 87 MB |
| Requires iOS | **9.3** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CommScope, Inc.](https://appshunter.io/developer/461547737) | [VIAVI Solutions Inc.](https://appshunter.io/developer/505552642) |

## What reviewers say

### RET Master

[App page](https://appshunter.io/ios/app/ret-master/id877778973)

This application enables wireless monitoring, control, and diagnostics for base station antennas. It connects to a RET Master unit to manage devices like Remote Electrical Tilt actuators and Tower Mounted Amplifiers.

**Highlights:** Wireless monitoring, Antenna control, Diagnostic capabilities, RET actuator management, TMA integration, CommScope SmartBeam support

**Features:** macOS Compatibility

**In-app purchases:** none


### VIAVI OSPREY

[App page](https://appshunter.io/ios/app/viavi-osprey/id6749333786)

This application simulates GPS signals for avionics testing, allowing users to create static waypoints and dynamic routes. It facilitates GPS receiver position lock through daily almanac data uploads and supports various GPS signal configurations.

**Highlights:** Static and dynamic route simulation, Automated almanac upload, Global avionics test set support, 10-channel configuration, Single or dual GPS antenna support, Direct GPS receiver connection, L1 GPS signal simulation

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

**In-app purchases:** none


## Frequently asked questions

### Is RET Master free?

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

### Is VIAVI OSPREY free?

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

### Which has better reviews, RET Master or VIAVI OSPREY?

RET Master and VIAVI OSPREY are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do RET Master or VIAVI OSPREY have ads?

Neither RET Master nor VIAVI OSPREY shows ads.

### Which is updated more often, RET Master or VIAVI OSPREY?

RET Master ships an update every 4 months, and VIAVI OSPREY every 2 months. Most recently, RET Master was updated on October 10, 2026 and VIAVI OSPREY on October 10, 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.*