KP Viewer vs Guitar Scale Memory
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KP Viewer
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.
- Live performance display
- Bank and Rig information
- Rig name display
- Effect status indicators
- Automatic tuner
- Dedicated stage display
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BEFORE PURCHASING KP Viewer requires a Kemper Profiler Player or Profiler Stage and a direct USB connection. • Lightning iPhone or iPad: USB-B-to-Lightning cable • USB-C iPhone or iPad: USB-B-to-USB-C cable Connect the cable, allow the Kemper to power on completely, then open KP Viewer. The app will not function without a compatible Kemper device and cable. KP Viewer gives Kemper Profiler Player users a clear, easy-to-read display for live performance. Connect your iPhone or iPad to your Kemper Player and KP Viewer provides the information you need at a glance, without navigating through menus. KP Viewer displays: • Current Bank and Rig • Rig Name • Effect status for A, B, C, D, X, MOD, DLY, and REV • Morph status • Automatic tuner display The interface is designed to be simple, highly visible, and useful on stage, making an older iPhone or iPad a practical dedicated display for your Kemper Player. KP Viewer is an independent application and is not affiliated with or endorsed by Kemper GmbH.
Guitar Scale Memory
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Guitar Scale Memory helps you learn guitar scales through basic shapes, fretboard maps, and recall practice. Based on the Japanese learning material "究極に覚えやすい最強のスケール記憶法", the app lets you study a shape, apply it to the fretboard, and practice remembering positions. LESSONS Learn how to use the basic shape and practice pentatonic scales. Pro also includes the vertical basic-shape lesson. FRETBOARD MAP Choose a key and scale, then explore basic, diagonal, and full views. Switch between note names and scale degrees, and review chord examples. Pro includes all 16 scales and vertical movement for selected scales. TEST Practice recalling fretboard positions across three levels. Level 1 is free. Free users can practice Levels 2–3 with the two pentatonic scales; Pro expands these levels to every included scale. FREE AND PRO Free includes the basic lessons, two pentatonic scales, and tests. Eligible screens display banner ads and full-screen ads at every 10 eligible actions. The monthly Pro subscription unlocks the full scale catalog, vertical movement for selected scales, and the additional lesson. All ads are hidden while Pro is active. SUPPORTED TUNING Designed for a six-string guitar in E A D G B E standard tuning. Other tunings are currently unsupported. Japanese and English interfaces, with light and dark appearance options. SUBSCRIPTION Pro is an auto-renewable monthly subscription. See the localized store price in the app and the purchase confirmation sheet. Payment is charged to your Apple Account at confirmation. The subscription renews automatically unless canceled. Manage or cancel it in your Apple Account subscription settings after purchase. Privacy policy: https://shiga15679-crypto.github.io/apps/scale-memory/privacy/ Terms of use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | KP Viewer | Guitar Scale Memory |
|---|---|---|
| Price | $19.99 | Free — better |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 4 days — better | Every 9 days |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 3 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | DEREK BERNARD | SHOICHI HASEGAWA |
In-app purchases
KP Viewer
No in-app purchases
Guitar Scale Memory
- Guitar Scale Memory Pro$1.991 Month









