# Keysight Pocket Guide vs VIAVI OSPREY

The clearest difference is ads: VIAVI OSPREY at none against Keysight Pocket Guide's shown. VIAVI OSPREY also leads on update cadence (every 2 months vs every 5 months). Keysight Pocket Guide's advantage is iOS requirement (13.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

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

Keysight Pocket Guide ships an update every 5 months, VIAVI OSPREY every 2 months. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Keysight Pocket Guide | VIAVI OSPREY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/viavi-osprey/id6749333786/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 47 MB | 87 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Keysight Technologies, Inc.](https://appshunter.io/developer/903911491) | [VIAVI Solutions Inc.](https://appshunter.io/developer/505552642) |

## What reviewers say

### Keysight Pocket Guide

[App page](https://appshunter.io/ios/app/keysight-pocket-guide/id579918710)

**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 Keysight Pocket Guide free?

Keysight Pocket Guide is free to download, with no in-app purchases.

### Is VIAVI OSPREY free?

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

### Do Keysight Pocket Guide or VIAVI OSPREY have ads?

Keysight Pocket Guide shows ads; VIAVI OSPREY does not.

### Which is updated more often, Keysight Pocket Guide or VIAVI OSPREY?

Keysight Pocket Guide ships an update every 5 months, and VIAVI OSPREY every 2 months. Most recently, Keysight Pocket Guide was updated on November 2, 2026 and VIAVI OSPREY on November 5, 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.*