# ChordFlow: Piano Chord Trainer — Sight-Reading, Improv & MIDI > Piano chord trainer with virtual piano, MIDI support, and practice modes. (iPhone/iPad app by 泽 眭.) - Source: https://appshunter.io/ios/app/chordflow-piano-chord-trainer/id6759816696 (this page in markdown: same URL + `.md`) - Developer: [泽 眭](https://appshunter.io/developer/1880888851) - Category: Music, Education - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 17.6 · 60 MB - Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan) - Released: 2026-03-10 - Data updated: 2026-08-28 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/chordflow-piano-chord-trainer/id6759816696/reviews.md ## What is ChordFlow? ChordFlow turns your iPhone or iPad into a chord practice room. Play a chord and see its name instantly, build fluency with three sight-reading modes plus Cross-Key Practice, and improvise over the built-in accompaniment machine. Practice on the touchscreen, or connect a MIDI keyboard or digital piano. REAL-TIME CHORD RECOGNITION • Recognizes 45+ chord types: triads, 6ths, 7ths, 9ths, 11ths, 13ths, sus and added-tone chords • Correctly names inversions and slash chords like Dm/G • A rising waterfall visualizes every note you hold • The sustain pedal (CC 64) is handled separately for sound and for analysis, so holding the pedal never blurs one chord into the next PRACTICE MODES • Zen: no timer. Optional chord-tone hints, plus a grace window for pedal legato • Groove: play on the beat. The metronome keeps time and scores the timing of your first note • Fast: pure reaction. Nail a chord and the next one appears — chase your best BPM • Cross-Key Practice: Transpose and Mixed Keys drills OPTIONAL MIDI KEYBOARD • Every feature works on the on-screen keyboard, which adapts to your device • Plug in a MIDI keyboard and the view expands to all 88 keys — connect or disconnect anytime • Velocity and sustain pedal supported • Prefer the sound of your own instrument? Mute the in-app piano ACCOMPANIMENT MACHINE (PRO) • Preset progressions: 1-6-4-5, classic pop (4-5-3-6-2-5-1), Canon, pop-rock (6-4-1-5) and more • Create and save your own progressions, or have it draw random chords from qualities you pick • Block or arpeggiated playback, with adjustable tempo, chord duration, bass root, sustain, metronome and loop count • Play along, and colors show which target tones you actually hit TRACK YOUR PROGRESS • Practice calendar with streaks, personal bests for every key, and full session history • 25 achievements covering key mastery, habits, theory and performance • Export and import your data anytime — everything is stored on your own device PRACTICE YOUR WAY • All 12 keys, with 29 chord qualities and inversions configurable per position — major, minor, diminished, augmented, sus, and 7ths through 13ths • Keep drills diatonic, or lift the restriction and combine chords freely • Flexible matching (correct chord tones) or exact matching (bass note included) • Roman or Arabic numerals for scale degrees • 10 languages, with chord and theory terms following each language's own conventions FREE VERSION INCLUDES Chord recognition, free play, all three sight-reading modes, Cross-Key Practice, and the built-in progressions, plus the practice calendar, personal bests and every achievement. PRO UNLOCKS All 12 keys, custom progressions, and the accompaniment machine. Choose a monthly subscription with a free trial, or buy once and keep it for good. GOOD TO KNOW • Works fully offline — no account, no ads, and no practice data ever leaves your device • Landscape orientation, designed for both iPhone and iPad • Made by an indie developer who uses it for his own improv practice. Questions or ideas? Email me — I usually reply the same day Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://flash-artichoke-9fd.notion.site/Privacy-Policy-31a51c4c1e3a800fb537cf8dd494979c ## Key features - Virtual and MIDI keyboard integration - Real-time chord recognition - Waterfall visualizer with chord names - Three scientific practice modes (Zen, Groove, Fast) - Smart accompaniment backing tracks - Offline functionality ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | ChordFlow Pro (Monthly) | $0.99 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | ChordFlow Pro (Lifetime) | $9.99 | one-time | ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/chordflow-piano-chord-trainer/id6759816696/reviews.md ### 5/5 — Active and supportive developer *2026-08-19* I found this app perfect for the kind of chord practice and retention training I wanted. Main perk is Zeal, the developer, is also very communicative and responsive with feedback and suggestions. I’m already in love with this app. ### 5/5 — Super helpful for piano! Review *2026-03-14* Really helps my piano chord practice ### 5/5 — Great chord trainer for beginners *2026-03-11* I'm currently learning piano, and this tool has been incredibly helpful for understanding and practicing chords. It makes the theory so much clearer. My only minor gripe is that the accompaniment patterns are a bit too basic. I’d love to see more complex styles in the future. Keep it up! ## Frequently asked questions about ChordFlow ### Does ChordFlow have ads? No, ChordFlow is completely ad-free, offering an uninterrupted practice experience. ### What devices does ChordFlow support? ChordFlow is available for iPhone and iPad, providing a seamless experience across Apple devices. ### How often is ChordFlow updated? ChordFlow was last updated on April 1, 2026, indicating active development and potential for future improvements. ### Can I use my MIDI keyboard with ChordFlow? Yes, ChordFlow offers seamless Plug & Play MIDI integration, supporting the full 88-key view and velocity sensitivity. ### What practice modes are available in ChordFlow? ChordFlow features three scientific practice modes: Zen Mode for stress-free practice, Groove Mode for rhythmic accuracy, and Fast Mode for reaction testing. ### Does ChordFlow require an account or internet connection? No, ChordFlow is an offline-first application and does not require an account, prioritizing user privacy. ### What age rating does ChordFlow have? ChordFlow has an age rating of 4+, making it suitable for a wide range of users interested in learning piano. ### How does ChordFlow recognize chords? ChordFlow performs deep analysis to accurately recognize over 45 chord qualities and complex slash chords in real-time, displaying them in a waterfall visualizer. ## Version history (last 5 releases) ### 1.1.10 — 2026-08-26 Custom progressions can now use chromatic-root chords, opening up richer harmony for practice and accompaniment. The Accompaniment Machine now offers five more natural-sounding styles, multiple time signatures, custom timing for each chord, and pause-and-resume playback. ### 1.1.9 — 2026-08-22 Cross-Key Practice now has clearer chord previews and easier key selection, along with other fixes. The Accompaniment player now feels smoother to play along with. Added more common chord progressions. ### 1.1.8 — 2026-08-20 New: Cross-Key Practice, with Transpose and Mixed Keys drills. Matching achievements have been added under Performance. ### 1.1.7 — 2026-08-11 Flat keys now show the names most players expect. For example, you will see Eb and Bb instead of D# and A#. ### 1.1.6 — 2026-08-05 New Simplified Mode (iPhone): hides secondary controls and enlarges the target chord during practice. The practice keyboard range can now be fixed to 2 octaves, 3 octaves or 88 keys, instead of following your MIDI connection. Chords with a required inversion now show the bass in the degree (5⁷/2, V⁷/ii). Plus landscape pop-up and display fixes. --- *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 2026-08-28.*