# qTonic > Music theory companion for songwriting, scales, chords, and progressions. (iPhone/iPad app by Justin Phillips.) - Source: https://appshunter.io/ios/app/qtonic/id1503103050 (this page in markdown: same URL + `.md`) - Developer: [Justin Phillips](https://appshunter.io/developer/1503103049) - Category: Music, Reference, Music - Price: Free - Rating: 4.80/5 from 5 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 85 MB - Languages: English - Released: 2020-03-30 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/qtonic/id1503103050/reviews.md ## What is qTonic? Music theory made easy! Bring your songwriting to the next level as qTonic guides you through the relationships between scales, chords, and progressions. It’s the ideal companion for any musician or songwriter regardless of their level of experience or knowledge of music theory. • Identify the key of a song given a few chords • Quickly find chords, substitutions, and add color to your progressions • Experiment with key modulations that work with a given chord or scale • Instantly explore which chords work best in a given key • Powerful song mode to create and save your own songs, chord progressions, and lyrics • Transpose chord progressions effortlessly And much more… Whether you simply want to make music theory easier or are looking for another source of inspiration to create engaging hooks and progressions, qTonic is a tool you can’t do without. ## Key features - Identify song keys - Find chords and substitutions - Experiment with modulations - Explore chords in a key - Create and save songs - Transpose chord progressions ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/qtonic/id1503103050/reviews.md ### 4/5 — What I needed! *2021-01-17* Thank you. Seems it’s hard to find a just a simple reference app that you can simply input chords and it tells you the key without any bells and whistles or using the mic to detect. This is that app. Nice and clean interface too. The only reason I’m not giving full 5 stars is because the scroll wheel closes when you lift your finger up which is a bit annoying but the fact it does the thing I need without shoving ads or any crap in my face for free... ### 5/5 — Love this idea *2020-04-12* Already started using this to help with my songwriting. It shows all the chords that go well together. ### 5/5 — Excellent learning tool *2020-04-09* Simple and intuitive. An excellent aid for learning to play and write music. ## Frequently asked questions about qTonic ### What is qTonic? qTonic is a free music theory application designed to help musicians and songwriters understand the relationships between scales, chords, and progressions. It offers tools for identifying song keys, finding chords, and experimenting with harmonic ideas. ### Is qTonic free to use? Yes, qTonic is completely free to download and use. There are no in-app purchases or advertisements, making it a straightforward tool for musicians. ### What devices does qTonic support? qTonic is available for iPhone and iPod devices. It is designed to run on these Apple mobile platforms. ### How often is qTonic updated? The latest version of qTonic is 1.0.4, which was released on April 11, 2020. While the last update was in 2020, the app's core functionality remains robust for music theory exploration. ### What age rating does qTonic have? qTonic has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions. ### Can qTonic help me identify the key of a song? Yes, qTonic features a mode that allows you to identify the key of a song by inputting a few chords. This is one of its core functionalities for understanding song structure. ### Does qTonic allow saving songs and progressions? Absolutely. qTonic includes a powerful song mode that enables you to create, save, and manage your own songs, chord progressions, and lyrics directly within the application. ### What do users like about qTonic? Users appreciate qTonic's ability to simplify music theory and provide inspiration for songwriting. Its intuitive interface and practical features for exploring chords and keys are highly valued. ## Version history (last 5 releases) ### 1.0.4 — 2020-04-11 Minor bug fixes. ### 1.0.3 — 2020-04-09 Minor bug fixes. ### 1.0.2 — 2020-04-05 Minor bug fixes. ### 1.0.1 — 2020-04-05 Minor bug fixes ### 1.0 — 2020-03-30 No release notes. ## Apps similar to qTonic | App | Rating | Price | Category | | --- | --- | --- | --- | | [Rap Beats Music Studio](https://appshunter.io/ios/app/rap-beats-music-studio/id1637975558) | 4.3 (3) | Free | Music | | [Rotinsky](https://appshunter.io/ios/app/rotinsky/id1563850655) | 5.0 (1) | Free | Music | | [Pianesso](https://appshunter.io/ios/app/pianesso/id1558984874) | — | Free | Music | | [Piano Note Recognizer](https://appshunter.io/ios/app/piano-note-recognizer/id1545296270) | 1.0 (1) | $1.99 | Music | | [Chord Shifter by Transpo](https://appshunter.io/ios/app/chord-shifter-by-transpo/id1587772667) | 5.0 (3) | $0.99 | Music | | [Music Intervals Trainer](https://appshunter.io/ios/app/music-intervals-trainer/id1462595160) | 4.0 (2) | $2.99 | 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.*