# Harmonica Key Pro — Keys and Positions > Harmonica key, position, and scale reference tool for diatonic players. (iPhone/iPad app by Charles Reina.) - Source: https://appshunter.io/ios/app/harmonica-key-pro/id1294779573 (this page in markdown: same URL + `.md`) - Developer: [Charles Reina](https://appshunter.io/developer/459582863) - Category: Music, Reference, Music - Price: $2.99 - Rating: 2.60/5 from 5 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 10.3 · 29 MB - Languages: English - Released: 2017-10-11 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/harmonica-key-pro/id1294779573/reviews.md ## What is Harmonica Key Pro? Harmonica Key Pro lets you unleash the power of your harmonica. Use it to quickly reference keys, positions and scales between the most common harmonica tunings. With improved reference notes you can also practice getting that bend perfect. From the stage to the side of the Mississippi Delta, this is the tool harmonica players need. Made by a harmonica player, for harmonica players. Note: This app is for diatonic harp players. If people really like it, maybe we will do chromatic next! Stay tuned. ## Key features - Reference keys, positions, and scales - Supports common harmonica tunings - Practice bend notes - Diatonic harmonica focus - User-friendly interface ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/harmonica-key-pro/id1294779573/reviews.md ### 1/5 — Wrong info *2019-01-07, version 1.1* Shows wrong scales, notes, for many keys and scales. Tried it first with blues scale on C harmonica 2nd position with no issue (tiles show green for appropriate notes on scale) then try for major scales in many keys and often shows wrong notes or won’t highlight (change tile green) for scale notes. Unfortunately tool is not functioning as should be. Requesting refund. ### 1/5 — What does it actually do? *2018-09-21, version 1.1* I bought this app hoping to learn some scales and positions on my harmonica. There are no instructions about how the app works or what any of the app notations mean. Basically a chart of the notes on a harmonica. Less helpful than a Google search. Update - I looked through every option offered in the app and came to realize that there is only one option actually works (Blues scale). The other scales don’t show which notes are part of the selected scale. I guess the developer had plans to build an app but didn’t finish it. This should be removed from the App Store. ### 5/5 — Harp souns *2018-01-05, version 1.1* Just miss the actual harmonica sounds from the previous version but it is still a great app for quick reference. ## Frequently asked questions about Harmonica Key Pro ### What is Harmonica Key Pro? Harmonica Key Pro is a mobile application designed to assist diatonic harmonica players. It provides quick references for keys, positions, and scales across various common harmonica tunings. ### What tunings does Harmonica Key Pro support? The app supports the most common harmonica tunings, offering a comprehensive reference for diatonic harmonica players. ### Can Harmonica Key Pro help with practicing bends? Yes, Harmonica Key Pro includes improved reference notes specifically to help players practice and perfect their harmonica bends. ### Is Harmonica Key Pro suitable for chromatic harmonica players? Currently, Harmonica Key Pro is designed for diatonic harp players. The developer has indicated a potential for chromatic harmonica support in the future if the app proves popular. ### What is the price of Harmonica Key Pro? Harmonica Key Pro is available for a one-time purchase of $2.99. ### What devices is Harmonica Key Pro available on? Harmonica Key Pro is supported on iPhone, iPad, and iPod devices. ### How often is Harmonica Key Pro updated? The latest version, 1.1, was released on October 26, 2017, indicating a less frequent update schedule. The app was initially released on October 11, 2017. ### What is the user rating for Harmonica Key Pro? Harmonica Key Pro has an average rating of 2.6 stars based on 5 user ratings. ## Version history (last 2 releases) ### 1.1 — 2017-10-26 This app has been updated by Apple to display the Apple Watch app icon. - Fixed a bug where the indicator didn't update when you changed your key, scale, chord or tuning. ### 1.0 — 2017-10-11 No release notes. ## Apps similar to Harmonica Key Pro | App | Rating | Price | Category | | --- | --- | --- | --- | | [Harmonica Trainer](https://appshunter.io/ios/app/harmonica-trainer/id6450636516) | — | $0.99 | Music | | [Musical Memory.](https://appshunter.io/ios/app/musical-memory/id1606775093) | — | Free | Music | | [Blue Harmonica](https://appshunter.io/ios/app/blue-harmonica/id1474522151) | 4.9 (40) | Free | Music | | [Tune Ai - Harmonica](https://appshunter.io/ios/app/tune-ai-harmonica/id1636696022) | 2.0 (6) | Free | Music | | [Basslines Music Theory Course](https://appshunter.io/ios/app/basslines-music-theory-course/id568209866) | 1.0 (1) | $6.99 | Music | | [Etudes for Alto Sax (V1)](https://appshunter.io/ios/app/etudes-for-alto-sax-v1/id979111668) | 5.0 (3) | $12.99 | Music | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*