midi Keyboard vs Zen AutoPan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
midi Keyboard
This app expands MIDI capabilities for musicians, offering two independent virtual keyboards with 9 octaves each. It allows connection to external MIDI keyboards and includes a MIDI player with real-time soundfont and instrument selection. Effects like reverb and distortion are also available.
- Two independent 9-octave multitouch MIDI keyboards
- External MIDI keyboard connectivity
- MIDI player for .mid/.midi files
- Real-time soundfont import and switching
- Reverb and distortion effects
- Sustain pedal support
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"midi keyboard" is the first MIDI EXPANDER for professional musicians or students. With “midi Keyboard” you will have: - two independent GM/GS MIDI keyboards each one with 9 octaves (multitouch , with independent octaves for each keyboard) - ability to connect an external MIDI keyboard to use "midi keyboard" like a real MIDI EXPANDER (the external keyboard can be used as the first or third keyboard available) - MIDI Player for playing MIDI files ( .mid or .midi - with the ability to save MIDI files within the portable device and choose the desired instrument in real time to play the MIDI file) - reverb and distortion sound effects (they can be used together, with each generated sound) - sustain pedal - soundfonts archive (you will be able to import and save all the soundfonts you want and switch in real time from one sound to another one) - percussion bank To generate the sounds "midi Keyboard" uses the GM/GS soundfonts (files with extension .sf2 / .sf / .dls ). The application is compatible with all the existing soundfonts, you can: - load and use the soundfonts files in real time - store in the local "midi Keyboard" archive an infinite number of professional soundfonts, free downloadable from the web (the soundfonts can be also purchased from third parties) Examples of free soundfonts that can be downloaded from the web are: FluidR3_GM.sf2 , PC51f.sf2 , Unison.SF2 , GeneralUser GS MuseScore v1.44.sf2 , TimGM6mb.sf2, etc... "midi Keyboard" also gives you the ability to store, read and listen your MIDI files (.mid or .midi) using the integrated MIDI Player of "midi keyboard". During the playback of MIDI files you can play a piece of song using the two independent keyboards of "midi Keyboard" and/or an external MIDI keyboard (multitouch keyboards sounds + external keyboard sounds + MIDI Player sounds, all together). During a live music performance you can also set the MIDI files as background music with the ability to change the MIDI sounds in realtime. Choose Your preferred sounds and play "midi Keyboard" using the two multitouch keyboards of "midi Keyboard" and/or using an external MIDI keyboard connected with "midi keyboard" MIDI EXPANDER. Features: - 2 independent MIDI keyboards each one with 9 octaves (multitouch, with independent octaves for each keyboard) - drivers to connect an external MIDI keyboard (using "USB to MIDI adapter" + "Camera Connection Kit" or “Apple lightning to USB adapter” or other commercial MIDI adapter compatible with iOS CoreMIDI like for example “iRig MIDI 2”, iRig Keys, etc…) - archive of soundfonts GM/GS - an infinite number of sounds (loadable from the chosen soundfonts) - GENERAL MIDI sounds list - archive of MIDI files - MIDI player (can be used as background music for live performances) - sustain pedal - percussions - reverb - distortion - 128 MIDI sounds + MIDI percussion included in the application - soundfonts and MIDI file remote sharing (cloud) - MIDI EXPANDER (external MIDI keyboard drivers) - MIDI IN messages filters: * Note ON * Note OFF * Polyphonic key pressure (Aftertouch) * Control change * Channel pressure (Aftertouch) * Pitch wheel App type: - UNIVERSAL APP (you pay it only once and it runs on all Your devices)
Zen AutoPan
This AUv3 stereo movement tool offers dynamic panning effects for music production and sound design. Sculpt your audio with multiple LFO shapes and an intuitive XY pad for real-time creative control. Seamlessly integrate with compatible DAWs on iOS devices.
- Multiple LFO Shapes
- Intuitive XY Pad
- Adjustable Stereo Width
- AUv3 Compatibility
- Optimized for iOS
- 3D Visuals
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FX Forms #002 - Zen AutoPan from Wild Surmise Music, second offering in the series of AUv3 FX plugins. Note: This needs a compatible DAW App such as Logic Pro, AUM, Cubasis, Garageband etc to use the AUv3 plugin. Zen AutoPan is not merely a tool, but an invitation to dance with the rhythm of the universe. Designed with the meticulous care of a Zen garden, this AUv3 app is a portal to experiencing the dynamic interplay of sound and silence. As Alan Watts might say, it allows you to "play" with your music, weaving the fabric of stereo panning effects into the tapestry of auditory experience. In the act of creating or enhancing sound, Zen AutoPan becomes a partner in the dance of existence, moving with the effortless grace of a leaf on a breeze. It's here, in the realm of music production and sound design, that Zen AutoPan offers a reflection of the universe's own symphony, inviting you to partake in the cosmic play of sound and silence, movement and stillness. Features: - Multiple LFO Shapes: Choose from sine, square, sawtooth, and random LFO shapes to sculpt your sound. - Intuitive XY Pad: Control the depth and speed of your stereo panning effects with an easy-to-use XY pad, allowing for real-time adjustments and creative expression. - Width Control: Adjust the stereo width to go from subtle spatial enhancements to full stereo sweeps, giving your tracks a larger-than-life presence. - Versatile Use: Ideal for music production, live performances, and sound design projects. - AUv3 Compatibility: Seamlessly integrates with your favorite DAW or music production app, offering flexibility and ease of use. - Optimized for iOS: Crafted specifically for the iOS environment, Zen AutoPan ensures a stable, high-performance experience on your favorite devices. 3D Visuals leverage SceneKit and Metal Shaders providing good visual performance on iOS devices and can also be turned off in the info menu.
Screenshots
Verdict
The clearest difference is review sentiment: Zen AutoPan at 80% against midi Keyboard's 25%. Zen AutoPan also leads on price (Free vs $1.99) and rating (4.7 vs 3.0). midi Keyboard's advantage is iOS requirement (10.0 vs 15.0). On ads, in-app purchases and device support 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
Zen AutoPan is free to download; midi Keyboard costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Zen AutoPan holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Zen AutoPan has 15 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 25% of midi Keyboard's written reviews are positive against 80% of Zen AutoPan's.
midi Keyboard ships an update every 30 months, Zen AutoPan every 13 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | midi Keyboard | Zen AutoPan |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.0 (2 ratings) | 4.7 (15 ratings) — better |
| Positive reviews | 25.0% of reviews | 80.0% of reviews — better |
| Number of ratings | 2 | 15 — better |
| Update frequency | Every 30 months | Every 13 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 16 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Gianluca Natalini | Tom Power |
Customer experience
midi Keyboard
Zen AutoPan
In-app purchases
midi Keyboard
No in-app purchases
Zen AutoPan
No in-app purchases









