# LUMA: Chords in Any Key — Synth & arpeggiator with MIDI > Performance chord synthesizer for musicians to play, record, and connect. (iPhone/iPad app by Christopher Morrison.) - Source: https://appshunter.io/ios/app/luma-chords-in-any-key/id6780613102 (this page in markdown: same URL + `.md`) - Developer: [Christopher Morrison](https://appshunter.io/developer/6780613104) - Category: Music, Entertainment - Price: $9.99 - Age rating: 4+ - Requires: iOS 17.0 · 4 MB - Languages: American English - Released: 2026-07-07 - Data updated: 2026-10-29 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/luma-chords-in-any-key/id6780613102/reviews.md ## What is LUMA? LUMA is a chord synth for iPhone. Pick a key, tap one of seven pads, and play a whole chord that fits. No wrong notes, no theory needed: just progressions under your fingers. PLAY • Seven chord pads built from your key, so every chord belongs • Slide between pads to move from chord to chord • Chord modes: diatonic, open, jazz and simple voicings • Synth voices including saw, pad, drone and organ SHAPE • Joypad: one hand on filter, pitch bend and rhythmic pulse • Arpeggiator with rates, patterns and octave range • Drum loops and a metronome to play along with RECORD AND CONNECT • REC captures takes, both the audio and the chords • Export takes as audio or MIDI files to finish in your DAW • MIDI OUT over USB and Wi-Fi to hardware synths and DAWs • Play from a Bluetooth game controller Made for producers, audio engineers and hobbyists who'd rather play chords than look them up. ## Key features - Performance pad for real-time control - ARP with tempo control - Latch mode for hands-free chords - REC mode with loop and file capture - MIDI and Bluetooth controller support - Export recordings directly ## Is LUMA safe? Not enough ratings yet to assess LUMA. ## Is LUMA legit? LUMA: Chords in Any Key has limited verification signals. The AppsHunter Legitimacy Score for LUMA is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/luma-chords-in-any-key/id6780613102/reviews.md ### 2/5 — 使いやすそう。。 *2026-09-21* シンプルで使いやすいとは思うがよりコード進行をホールド機能などを追加して把握しやすくしてほしい。また設定画面から操作画面に戻るボタンが無くどう使って良いかわからない。更新に期待 **Developer response:** レビューありがとうございます。コードを押し続けなくても鳴らし続けたい場合は、画面上の「CTRL」をタップし、「LOCK CHORD」をオンにしてください。今後のアップデートで、この機能は「HOLD」という名前になり、見つけやすくなります。設定画面からは、画面下のタブバーの左のアイコンで演奏画面に戻れます。また、次の大きなアップデートでは、マイナーなど8種類のスケールと、コード進行がより自然につながるボイスリーディングが加わります。ご意見ありがとうございました。 ### 1/5 — Nice idea, poor performance *2026-09-15* The idea of building an app that makes music and even easy is nice, but to charge for it and have this poor performance shocks me. No loops, no beats provided, just to hammer some notes? Definitely needs a makeover… at this stage of the app I’d very much like to have my money back…… **Developer response:** Thank you for taking the time to leave a review. LUMA is still growing, and we're adding new features with every update. There are drum loops included to play along with, but LUMA's main focus is making it quick and enjoyable to create chord progressions on the move. A lot of care has gone into the sound of the synths and effects, and we hope we can change your mind as LUMA continues to grow. ### 5/5 — Great synth *2026-08-03* Really nice app, looks great and sounds amazing. It was very easy just to get a few chord progressions together and it’s already been updated with new features. **Developer response:** Thank you! ### 5/5 — Love it *2026-07-31* À Little bit expensive maybe but very interesting to create music. ## Frequently asked questions about LUMA ### What is Electric Phantoms: LUMA? Electric Phantoms: LUMA is a performance chord synthesizer designed for musicians. It allows users to play, shape sounds, and create music in real-time without complex programming. ### Does Electric Phantoms: LUMA have ads? No, Electric Phantoms: LUMA does not contain advertisements. It is a paid application. ### How much does Electric Phantoms: LUMA cost? Electric Phantoms: LUMA is available for a one-time purchase price of $9.99. ### What devices does Electric Phantoms: LUMA support? Electric Phantoms: LUMA is currently supported on iPhone devices. ### Can I record music with Electric Phantoms: LUMA? Yes, Electric Phantoms: LUMA features REC mode for recording loops and capturing files. Recordings can be exported directly from the app. ### Does Electric Phantoms: LUMA support MIDI? Yes, Electric Phantoms: LUMA offers full MIDI support, allowing it to connect and work seamlessly with your existing music setup and Digital Audio Workstations (DAWs). ### How often is Electric Phantoms: LUMA updated? The latest version, 2.1.0, was released on August 2, 2026. Updates are released periodically to improve functionality and add features. ### What is the age rating for Electric Phantoms: LUMA? Electric Phantoms: LUMA has an age rating of 4+, making it suitable for a wide range of users. ## Version history (last 5 releases) ### 2.4.0 — 2026-10-25 This update makes LUMA more reliable and more efficient and improves layouts on smaller screens, the iPhone Duo and at larger text sizes. Changes include: • A new and more efficient core synth engine • Rebalanced sounds so each plays at a more even level • The Auto theme now follows your phone's light or dark setting • Improved VoiceOver support • Improved MIDI exports • Fixed an issue where the ARP button did not respond to taps on older versions of iOS • Fixed an issue where the joypad could get stuck when a touch was interrupted • Fixed issues where audio failed to restart after calls or other system interruptions • Many other small fixes ### 2.3.1 — 2026-09-16 With the iOS 27 update, tapping a chord pad could give you the little buzz and then nothing, no sound, no colour. That's fixed. Every press plays instantly and lights up as it does. • Voice Leading, chords now move to their nearest notes instead of jumping register, so progressions flow instead of stepping. Switch it on under CTRL. • Play with both hands, hold a chord with one finger and press the next with another. Sliding between pads is smoother, and letting go of one hand no longer cuts the other's chord. • A tap always sounds, however briefly you touch the pad. • A much bigger joypad on iPhone SE, with more room to aim and more expression. • The Controls sheet is reorganised so it reads at a glance: the four pad modes, then the two locks, then Slide Chords and Voice Leading. • Recording stops when you leave the instrument or the app, so a take can't roll on unnoticed. Playing a take back stops when you leave Recordings. • The recording border now draws evenly all the way round, including the corners on larger iPhones. ### 2.3.0 — 2026-09-13 Recording • The countdown has been rebuilt. The count, click and take now all follow one clock. • Pressing REC while the metronome or drums are already playing no longer makes them skip a beat. • REC now waits for the next bar before counting in. The wait is silent with a grey pulse, and the count is always the number of bars you asked for. • Recording starts on the scheduled downbeat, and the first drum hit is no longer clipped. • The recording border and REC button now light together, right on the beat. • Deleting a take while it is playing now stops playback. • Long-press REC to quantize a take while allowing it to finish at the end of the current bar, creating a clean loop. • MIDI exports now use the take’s recorded timing and settings rather than approximating them. • Each recording stores its key, octave, chord mode, tempo, per-chord joypad zone and arpeggiator settings. • The countdown now returns to the joypad in sync with the recording border and REC indicator. • MIDI exports preserve trailing silence, so the full take length is retained. • Older recordings now loop at their full length after resuming partway through. Playing • Chord pads now lead with the chord name, with the numeral shown as a quieter label. • The joypad mode has moved onto the playing surface as the CTRL chip. • The new Controls sheet includes Chord, Filter, Pitch and Shape modes, plus Lock Joypad, Lock Chords and Slide Chords. • Lock Joypad now holds the pad in every mode. • Slide Chords lets you hold and slide between chord pads without lifting your finger, with a smooth pitch transition. • Controls scroll when needed on smaller screens, while the octave buttons remain accessible. • Improved the iPhone SE layout and rebalanced the iPhone mini’s portrait joypad and chord pads. Sound • EMBER replaces NEON: a warmer voice that rings an octave as it arrives and darkens as it rings. MIDI • MIDI OUT now sends the arpeggio one note at a time when ARP is on, instead of sending the chord it was built from. The same applies to exported MIDI files. • Note velocity is now configurable rather than fixed. • Disabling MIDI OUT or changing its destination now releases held notes, preventing stuck notes. • Improved MIDI input handling and arpeggiator reliability. Tidy • Landscape sheets now sit at their content height instead of appearing as a tall, mostly empty card. • Instrument controls and navigation share one row in landscape. Recordings and Settings show navigation only. • Fixed navigation and picker behaviour after rotating the phone. • Faster toggles, tidier spacing and the haptics setting moved alongside the other app settings. ### 2.2.0 — 2026-08-29 • REC now captures real audio, starting the moment you play. Export as .m4a, allowing you to AirDrop audio, drop into a DAW or send to anyone. MIDI export is updated too, so you get both from one take. • Four new synth sounds added. • Drums and the metronome start on the same downbeat, whichever you switch on first, and hitting REC while a loop is playing now waits for the bar to come round before counting in, so your take lands in time. • Chords have their low end back on the main chord shapes, and ring out properly when you change between them. • New app icon. ### 2.1.0 — 2026-08-02 - Updated joypad size Missed notes from previous version: - Added drums - Updated metronome downbeat pitch - Added 2 new synths, Square and Triangle - Updated puck size in joypad - Added "Sphere" visualiser - Added version name on Settings screen - Fixed demos bug - Fixed bug where wheel would go the wrong way - Fixed ARP bottomsheet being too high ## Apps similar to LUMA | App | Rating | Price | Category | | --- | --- | --- | --- | | [Kizamu: Metronome & BPM Finder](https://appshunter.io/ios/app/kizamu-metronome-and-bpm-finder/id6762701401) | 4.7 (3) | Free | Music | | [BEATSURFING Performer](https://appshunter.io/ios/app/beatsurfing-performer/id6744604337) | 4.5 (2) | Free | Music | | [ANALOGyGR](https://appshunter.io/ios/app/analogygr/id6746485545) | 4.7 (10) | $2.99 | Music | | [CACHE - AUv3 Sample Browser](https://appshunter.io/ios/app/cache-auv3-sample-browser/id6760597087) | 4.9 (10) | $2.99 | Music | | [Rigside: Drum and Bass](https://appshunter.io/ios/app/rigside-drum-and-bass/id6753942797) | 5.0 (2) | Free | Music | | [RadioMama - Radio & Sampler](https://appshunter.io/ios/app/radiomama-radio-and-sampler/id6759728445) | 4.3 (8) | Free | 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 2026-10-29.*