variant vs MPEdie
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
variant
This audiovisual artwork generates evolving music and imagery based on user interaction and randomness. Explore a unique generative art experience where sound influences visuals, offering a new composition with every tap.
- Generative audiovisual artwork
- Evolving music and imagery
- User-controlled music flow
- Sound-influenced visuals
- Interactive generative art
- Screenshot capture
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variant:flare is an audiovisual artwork that creates beautiful, ever-changing music and imagery. The app combines user input and built-in randomness to create images and music that will continually change, grow and evolve, offering a new and different experience every time. For users of all ages, variant:flare is a chance to explore and experience a unique work of generative art. To interact with variant:flare, tap the screen with one finger; each tap will start a new track of the music. After six tracks have been loaded, each tap will reset one track and load a new random selection. By gradually resetting different elements of the composition, you control the flow and evolution of the music. The visuals are in turn controlled by the sound, so by changing the music, you will influence the development of the visuals. You can view the indeterminate audio engine by tapping the dot in the lower right. The display shows the different elements of the musical composition as they are loaded by the engine through a combination of chance and user input. The center button opens a menu of settings for the app, and the button to the right allows you to take screenshots of the visuals, automatically saving them to your photo library. The Variant apps are a new series of generative audiovisual artworks from Interval Studios featuring visuals by Joshue Ott and music by Kenneth Kirschner. Each Variant features a unique visual composition by Ott based on his superDraw visual performance software, as well as a new indeterminate musical composition by Kirschner. Each Variant app also offers a different set of interactive controls for the user, ranging from the ability to subtly influence the development of the piece to total interactive control over both visuals and sound. All of the Variants are generative artworks: through a varying combination of built-in randomness and user input, each Variant will continually grow and evolve over time without ever directly repeating itself either visually or musically, offering the user an ever-changing, ever-evolving audiovisual experience.
MPEdie
This app is an expressive MIDI keyboard controller for mobile devices. It allows for detailed per-note expression, enabling unique sound manipulation. It can be used standalone or as an AUv3 plugin with other music applications.
- MPE keyboard controller
- Per-note MIDI channel control
- Four playing surfaces (Piano, Isomorphic, Ribbon, Scale Grid)
- Customizable expression matrix
- AUv3 plugin support
- Standalone operation
- 26 presets
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MPEdie is an MPE keyboard controller for iPhone and iPad. It makes no sound: it plays whatever instrument you send it to, and it gives every note its own MIDI channel — so every note bends, breathes and changes timbre on its own. On an ordinary keyboard a bend moves the whole chord. Here it moves one note. APP AND AUv3 Run it standalone and send MIDI to other apps on the device, to Bluetooth gear or over Wi-Fi. Or load it as an AUv3 MIDI plugin in your host and route it straight to an MPE instrument. FOUR PLAYING SURFACES • PIANO — the keyboard your hands know. Sliding follows the pitch under the finger, not the width of the key. • ISOMORPHIC — a grid where a chord shape is the same in every key. Rows, columns and row interval are yours to set. • RIBBON — one continuous strip, nothing to land on. You choose how many semitones fit across it. • SCALE GRID — the same grid, with only the notes of the chosen scale. Nothing out of key by accident. Fourteen scales, any root, split the surface in two with its own layout and octave on the right. EVERY FINGER MOVEMENT IS ROUTABLE A matrix of seven destinations — bend, timbre, pressure, strike, lift and two free CCs — and eight sources: sideways glide, absolute or relative position in the key, contact area, force, time held, or a fixed value. Each link has a curve, a gain, an offset and an invert. And an honest answer about pressure: iOS glass does not measure how hard you press. It measures contact area. MPEdie can send that, and it says so instead of pretending — it is one tap away in the matrix, and the factory default is a gesture you can predict. BUILT TO AGREE WITH THE RECEIVER Lower, upper or split zones. Member channel counts. Per-note and master bend ranges. RPN sent to every member channel when your instrument needs it. Channel pressure or poly aftertouch. Any timbre CC. Channel stealing by oldest or quietest, with a cooldown. One button resends the MPE zone setup to an instrument loaded after you. UNDER THE HANDS PANIC that also lifts the pedal. Octave and key count. Four glide modes — continuous, snap, locked, per-note lock. Pitch, modulation and volume strips, with a spring you can switch off. Two assignable XY pads. Sustain, momentary or latching. Latch, with held notes drawn apart so a stuck note never looks like a played one. Bank select and program change, sent when you ask and never behind your back. TWENTY-SIX PRESETS Seven folders: keyboards, grids, ribbons, splits, scales, and a Targets family that answers the same question — what does the receiver actually understand? — five different ways. Save your own; they are plain files you can move and share. A FREE COMPANION FOR MAC AND WINDOWS MPEdie Desktop receives the iPad over the network and republishes it as a virtual MIDI port, so your DAW sees MPEdie in its list of MIDI inputs, exactly like a hardware controller. That is the point: an input gets recorded. Arm a track and the DAW writes down the per-note expression — every note's own bend, pressure and timbre — and plays it back. Nothing is installed on the iPad, and no driver on Windows. Free download from the developer's site. The full manual is inside the app. MPE (MIDI Polyphonic Expression) is an open standard published by the MIDI Association and AMEI. MPEdie is MPE-compatible. Diego Capoccitti · 34Audiovisuals · www.diegocapoccitti.it
Screenshots
Verdict
The clearest difference is rating: MPEdie at 4.9 against variant's 4.4. MPEdie also leads on review sentiment (100% vs 80%) and update cadence (every 6 days vs fortnightly). variant's advantage is iOS requirement (8.0 vs 15.0). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
MPEdie holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 7 and 8 respectively. Written reviews point the same way: 80% of variant's written reviews are positive against 100% of MPEdie's.
variant ships an update fortnightly, MPEdie every 6 days. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | variant | MPEdie |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (7 ratings) | 4.9 (8 ratings) — better |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 7 | 8 — better |
| Update frequency | Fortnightly | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 92 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Interval Studios | Diego Capoccitti |
Customer experience
variant
MPEdie
In-app purchases
variant
No in-app purchases
MPEdie
No in-app purchases









