Comparison

AUMI vs MusiKraken

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AUMI

This app allows individuals with limited mobility to create music through movement and gestures. It focuses on improvisation and self-expression, making music accessible to a wider range of people, including those with profound physical disabilities.

Highlights
  • Music creation through movement and gestures
  • Focus on improvisation and self-expression
  • Accessible for individuals with profound physical disabilities
  • Uses device cameras for input
  • Configurable sound sensitivity
  • MIDI controller functionality
  • Import audio from other apps
Features
Read full description

Adaptive Use Musical Instruments (AUMI) software interface enables people who have very limited controlled (voluntary) movement to independently engage in music making. The Adaptive Use Musical Instruments software interface enables the user to play sounds and musical phrases through movement and gestures. This is an entry to improvisation rather than “hitting the right notes” or playing set pieces of music. Instead, the software uses music as a way for participants to express a range of affects, both by themselves and in response to, or in conversation with, others. While the AUMI interface can be used by anyone, the focus has been on working with people who have profound physical disabilities. In taking these participants as its starting point, the project attempts to make musical improvisation and collaboration accessible to the widest possible range of individuals. This approach also opens up the possibility of learning more about the relations between ability, the body, creativity and improvisation, from within a cultural context that does not always acknowledge or accept people with disabilities. This iOS version of AUMI runs on devices with cameras, and can run on iPhones, iPod touches, and iPads. A large assortment of sounds can be triggered with configurable amounts of sensitivity. AUMI also can be used as a MIDI controller to access other iOS based synthesizers or external equipment (using the iPad's Camera Connection kit or via Core MIDI over WiFi.) AUMI can also import audio from other iOS or desktop apps to be used as melodic or percussive instruments. AUMI can capture a record of the movement in the session, which can be exported and turned into reports in a clinical setting.

About

MusiKraken

Transform your mobile device into a powerful, customizable MIDI controller. Utilize built-in sensors and connected hardware to create unique musical expressions and control instruments or software. Supports advanced MIDI features and audio unit plugins.

Highlights
  • Modular MIDI controller editor
  • Device sensor inputs (touch, motion, camera, mic)
  • Connect external devices (game controllers, Apple Watch)
  • MIDI effects and routing
  • Audio Unit (AUv3) plugin hosting
  • MIDI 2.0 support
  • OSC data output
Features
Read full description

MusiKraken is a modular MIDI Controller Construction Kit, empowering you to fully harness the capabilities of your mobile device's hardware. Winner of a 2022 MIDI Innovation Award! Make music using device sensors like Touch, Motion Sensors, Camera (face, hand, body and color tracking, including TrueDepth and LiDAR support) and Microphone, or connected devices like Game Controllers, Apple Watch or AirPods. Choose from several types of modules in the editor and connect the ports to create your own personal MIDI controller setup. Route the MIDI signals through effect modules to control multiple instruments simultaneously or invent creative new MIDI controller combinations. MusiKraken supports sending and receiving MIDI data over Wi-Fi, Bluetooth or via Core MIDI (for example by using Inter-Device Audio and MIDI (IDAM)). And it can host Audio Unit (AUv3) instrument plugins. Or send the sensor data via OSC. MusiKraken is also one of the first apps to officially support MIDI 2.0! You already own a very powerful device with all kinds of sensors and connection possibilities. With this app you can use these sensors as inputs, combine them with all kinds of MIDI effects and send the resulting MIDI events to your computer, synthesizer, any other MIDI-capable app or Audio Unit to to create your own, expressive MIDI controller setup. Your device for example has a multitouch screen. Use this with the Keyboard module to slide on the keys to control multiple musical parameters simultaneously. Using MPE, MIDI 2.0 or the Chord Splitter also allows you to control these parameters separately per key. Newer devices also support tracking the finger radius (or pressure on older devices), which adds another dimension of control. Multitouch is also used by the Chords Pad to play the chords of a selected scale, or the Touchpad, which allows you control values via touch gestures. Another unique input sensor is the camera: MusiKraken supports tracking your hands in front of the camera, your body pose, your face or objects with specific colors. This way you can for example use your iOS device as a Theremin, jump or dance around in front of the camera to generate notes or control audio parameters, use your mouth to control the sound of a virtual trumpet, or any other combination. If your device has a TrueDepth or LiDAR sensor, you can also use the distances as input values. Your device also has motion sensors: Accelerometer, Gyroscope and Magnetometer. They can be either used separately, or combined to get the current rotation of the device in three dimensions. Use this to generate sounds or control parameters while shaking or tilting your device. Your device also has a microphone, and MusiKraken can detect the pitch or amplitude of the signal. Your iOS device also allows you to connect to external devices. MusiKraken for example supports Game Controllers (trigger events on button or thumbstick changes, motion sensors, haptics and light on supported Game Controllers), Apple Watch (motion sensors, digital crown, touch, heart rate) or the motion sensors within AirPods. The real power comes once you start combining the sensors with the effect modules. There are effects that can be used to change or filter the MIDI events. Some effects allow you to combine multiple input sources into new output values. Or splits chords into separate notes so that they can be sent to different channels. Important: Please note that some of the modules only work on iOS devices with specific hardware: ARKit Face Tracking and the TrueDepth module need a TrueDepth front camera, and Hand and Body Pose Tracking needs at least iOS 14, and might be too slow on older devices. HealthKit is used in the app to access Apple Watch data like heart beat or motion sensors. The app only uses sensor data to generate MIDI events.

Screenshots

AUMI4 screens
MusiKraken3 screens

Verdict

The call

AUMI and MusiKraken both sit at 5.0 stars, but that hides the real split: 97% of MusiKraken's written reviews are positive against 50% of AUMI's. MusiKraken also leads on update cadence (every 4 weeks vs every 6 months) and ratings volume (24 vs 4). AUMI's advantage is price (Free vs $9.99) and iOS requirement (12.4 vs 15.0). On rating, 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

CostPrice · In-app purchases · Ads · Monetization

AUMI is free to download; MusiKraken costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for AUMI against 5.0 for MusiKraken. That said, the two scores are not equally well evidenced: MusiKraken has 24 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 50% of AUMI's written reviews are positive against 97% of MusiKraken's.

UpkeepUpdate frequency

AUMI ships an update every 6 months, MusiKraken every 4 weeks. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

Scorecard6 real differences · 4 level
AUMI versus MusiKraken: the parameters behind the verdict, then further details
ParameterAUMIMusiKraken
PriceFree — better$9.99
Rating5.0 (4 ratings) — better5.0 (24 ratings)
Positive reviews50.0% of reviews97.0% of reviews — better
Number of ratings424 — better
Update frequencyEvery 6 monthsEvery 4 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS12.4 — better15.0
Further details — not scored
Size69 MB110 MB
Age rating4+4+
DeveloperRensselaer Polytechnic InstituteSnarp

Customer experience

AUMI

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

MusiKraken

All ratings24 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews33 reviews
Positive97.0%
Neutral3.0%
Negative0.0%

In-app purchases

None

AUMI

No in-app purchases

None

MusiKraken

No in-app purchases

Questions

Is AUMI free?
AUMI is free to download, with no in-app purchases.
Is MusiKraken free?
MusiKraken costs $9.99, with no in-app purchases.
Which has better reviews, AUMI or MusiKraken?
AUMI is rated higher. AUMI averages 5.0 out of 5 from 4 ratings, while MusiKraken averages 5.0 from 24 ratings.
Do AUMI or MusiKraken have ads?
Neither AUMI nor MusiKraken shows ads.
Which is updated more often, AUMI or MusiKraken?
AUMI ships an update every 6 months, and MusiKraken every 4 weeks. Most recently, AUMI was updated on November 1, 2026 and MusiKraken on November 7, 2026.

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