# KP Viewer vs Guitar Scale Memory

The clearest difference is price: Guitar Scale Memory at Free against KP Viewer's $19.99. KP Viewer's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Guitar Scale Memory is free to download; KP Viewer costs $19.99 up front. Guitar Scale Memory sells 1 in-app purchase, starting at $1.99 per month. KP Viewer asks for nothing beyond the download.

KP Viewer ships an update every 4 days, Guitar Scale Memory every 9 days. Both last shipped on November 6, 2026.

## The numbers

| Metric | KP Viewer | Guitar Scale Memory |
| --- | --- | --- |
| Price | $19.99 | **Free** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/kp-viewer/id6807597087/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Every 9 days |
| Monetization | Paid | — |
| Size | 3 MB | 34 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DEREK BERNARD](https://appshunter.io/developer/6807597090) | [SHOICHI HASEGAWA](https://appshunter.io/developer/6782397628) |

## What reviewers say

### KP Viewer

[App page](https://appshunter.io/ios/app/kp-viewer/id6807597087)

This app provides a clear, at-a-glance display for Kemper Profiler Player users during live performances. It shows current bank, rig name, effect status, morph status, and an automatic tuner, turning older devices into a dedicated stage display.

**Highlights:** Live performance display, Bank and Rig information, Rig name display, Effect status indicators, Automatic tuner, Dedicated stage display

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

**In-app purchases:** none


### Guitar Scale Memory

[App page](https://appshunter.io/ios/app/guitar-scale-memory/id6817570404)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Guitar Scale Memory Pro | $1.99 | per month |


## Frequently asked questions

### Is KP Viewer free?

KP Viewer costs $19.99, with no in-app purchases.

### Is Guitar Scale Memory free?

Guitar Scale Memory is free to download, with in-app purchases available.

### Do KP Viewer or Guitar Scale Memory have ads?

Guitar Scale Memory shows ads; KP Viewer does not.

### Which is updated more often, KP Viewer or Guitar Scale Memory?

KP Viewer ships an update every 4 days, and Guitar Scale Memory every 9 days. Most recently, KP Viewer was updated on November 6, 2026 and Guitar Scale Memory on November 6, 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.*