# 5thsFlow - Circle of 5ths — Music Theory & Chord Builder > Interactive Circle of Fifths for music theory, chord building, and progression creation. (iPhone/iPad app by James Roche.) - Source: https://appshunter.io/ios/app/5thsflow-circle-of-5ths/id6782925646 (this page in markdown: same URL + `.md`) - Developer: [James Roche](https://appshunter.io/developer/1896491450) - Category: Music, Education - Price: $4.99 - Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 8 MB - Languages: American English - Released: 2026-06-25 - Data updated: 2026-08-21 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/5thsflow-circle-of-5ths/id6782925646/reviews.md ## What is 5thsFlow? 5thsFlow is an interactive Circle of Fifths built for musicians, songwriters, and producers who want to understand music theory — not just memorize it. Tap any key on the wheel and instantly see its 7 diatonic chords, 7 modes, key signature, and relationships to every other key. Hear everything played back in real time with a warm, piano-style tone. EXPLORE ANY KEY • All 7 diatonic chords with Roman numerals, chord function, and quality • Toggle between major and relative minor — see Am as i, F as VI, and so on • 7 modes arpeggiated so you can hear their character: Dorian, Phrygian, Lydian, and more • Key signature, scale degrees, relative minor, dominant, and subdominant at a glance • Transpose up or down by semitone without losing your place CHORD VOICINGS & EXTENSIONS • Switch between Triad, 7th, Sus2, Sus4, and Add9 voicings for every chord • Hear exactly how extensions change the feel of a chord — from open and suspended to rich and jazzy • Borrowed chords from the parallel minor shown in every major key — modal interchange made visual and playable BUILD PROGRESSIONS • Add chords from any key into a sequencer • Set your BPM, toggle loop mode, and play it back • Save named progressions and reload them any time • Works across keys — mix chords from different keys in one progression FIND YOUR KEY • Know your chords but not the key? Tap them in and matching keys appear instantly • Or hold your phone up to an instrument — the mic detector listens and ranks the most likely keys by confidence in real time SOUNDS GREAT • Block or Strum chord playback style • Play the classic I–IV–V–I progression or the i–VI–III–VII minor progression with one tap • Haptic feedback that matches chord quality — major, minor, and diminished each feel different Whether you're a beginner learning which chords go together or a working musician who needs a fast reference on stage, 5thsFlow is the fastest path from question to answer. Designed for iPhone and iPad. ## Key features - Interactive Circle of Fifths - Diatonic chords and Roman numerals - 7 modes with arpeggiated playback - Chord voicings and extensions - Chord progression builder - Microphone key detection - Haptic feedback for chord quality ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/5thsflow-circle-of-5ths/id6782925646/reviews.md ### 5/5 — Doesn’t work with headphones (UPDATE) *2026-06-28* Previous review: No sound comes out when Bluetooth headphones are used. When headphones are then disconnected, sound doesn’t work at all and the app has to be deleted and reinstalled. UPDATE: The developer was very attentive to this issue and it seems like a fix is underway, thanks! Really enjoying this app so far. **Developer response:** Thanks for reporting that. Although I couldn't replicate it with my AirPods, I was able to test on a pair of Soundcore bluetooth headphones and I was able to replicate your issue then. Sorry for that but I found the bug I believe and submitted an update to Apple already. Please keep an eye out for version 1.2 coming soon. ## Frequently asked questions about 5thsFlow ### What is 5thsFlow? 5thsFlow is an interactive Circle of Fifths application designed to help musicians understand music theory concepts like chords, modes, and key signatures. It offers real-time audio playback and visual representations of musical relationships. ### How does 5thsFlow help with understanding chords? 5thsFlow displays the 7 diatonic chords for any selected key, including their Roman numerals and chord functions. You can also explore various chord voicings and extensions to hear how they alter the chord's sound. ### Can 5thsFlow help me build chord progressions? Yes, 5thsFlow includes a sequencer where you can add chords from any key to build and loop chord progressions. You can save and reload your created progressions. ### Does 5thsFlow have a feature to detect the current key? Yes, 5thsFlow has a microphone detector that listens to your instrument and ranks the most likely keys in real time, providing a confidence level for each. ### What devices is 5thsFlow available on? 5thsFlow is designed for both iPhone and iPad devices, offering a seamless experience across Apple's mobile platforms. ### How much does 5thsFlow cost? 5thsFlow is a paid application priced at $4.99. There are no in-app purchases or subscriptions required after the initial purchase. ### Does 5thsFlow have ads? No, 5thsFlow does not contain advertisements. As a paid application, it provides an uninterrupted user experience focused on music theory exploration. ### What is the update frequency for 5thsFlow? The latest version of 5thsFlow is 1.2, which was last updated on June 27, 2026. While specific update frequency isn't detailed, this indicates ongoing development and support. ## Version history (last 3 releases) ### 1.2 — 2026-06-27 Improved audio reliability — Fixed an issue where sound could stop working after using the key detection feature, particularly when Bluetooth headphones are connected. ### 1.1 — 2026-06-27 What's New • Chord Voicings — Choose from Triad, 7th, Sus2, Sus4, or Add9 voicings when tapping chords. Hear how extensions change the character of a chord instantly. • Borrowed Chords — Major keys now show chords borrowed from the parallel minor (modal interchange), highlighted in amber so they stand out from the diatonic set. • iPad Support — Redesigned layout for iPad with a two-column view: the Circle of Fifths on the left, key details on the right. Everything adapts to all orientations. • Audio Reliability — Fixed an issue where audio would stop after plugging in headphones, switching to Bluetooth speakers, or returning to the app from the background. ### 1.0 — 2026-06-25 No release notes. ## More apps by James Roche - [UnitFlowPro](https://appshunter.io/ios/app/unitflowpro/id6767599503) - [Tuner-Flow](https://appshunter.io/ios/app/tuner-flow/id6769026840) - [Note-Due: Tasks & Notes](https://appshunter.io/ios/app/note-due-tasks-and-notes/id6770308761) - [Chewie Bone Dasher](https://appshunter.io/ios/app/chewie-bone-dasher/id6771123310) - [IT Flow Pro](https://appshunter.io/ios/app/it-flow-pro/id6771805472) - [ChordFlowWiz](https://appshunter.io/ios/app/chordflowwiz/id6775611923) All apps by James Roche: https://appshunter.io/developer/1896491450 --- *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 2026-08-21.*