Comparison

Midiflow Motion (Audiobus) vs Aurora (MIDI Controller)

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

Head to head
About

Midiflow Motion (Audiobus)

Control effect parameters in other music apps by moving your device. Fine-tune MIDI commands like volume or modulation to your desired motion range for expressive control. Supports multiple parameters and apps simultaneously through Audiobus 3.

Highlights
  • Control effect parameters with device motion
  • Use device rotation (X/Y axis)
  • Adjust motion and output value ranges
  • Send any MIDI command (pitch-bend, CC, custom)
  • Control multiple parameters/apps simultaneously
  • Integrates with Audiobus 3
Features
Read full description

This MIDI sender app for Audiobus 3 lets you control effect parameters of other apps – in a way that no touch screen can replace – by moving the device. Set any kind of MIDI command like volume or modulation as output and fine-tune it to the exact motion range you want to perform with. You can even control multiple effects simultaneously. + Use device rotation around the X or Y axis + Adjust the range of motion for controlling a parameter + Adjust the range of output values + Send virtually any MIDI command (e.g. pitch-bend, any Control Change like modulation or expression, and even custom MIDI messages) + Control multiple parameters and/or multiple apps at the same time by inserting this app multiple times in Audiobus NOTE: This app requires Audiobus 3. Insert it into one or more MIDI sender ports to control the synth apps in the MIDI output ports of the respective pipelines. THE IPAD IS YOUR CONTROLLER Without a doubt, the iPad's touch screen is a revolutionary tool for musicians. However, it also comes with sensors that can track how you move your device around two axes. Using those sensors to control effect parameters allows you to perform with a huge amount of expression. CONTROL ALL KINDS OF PARAMETERS Many synth apps allow you to "remotely" control their parameters via MIDI messages. For that purpose, Midiflow Motion can send virtually any MIDI command to those apps, through Audiobus. Just select from the list of available parameters and the app starts sending messages when you move the device. Not only can you use basic Control Changes for "volume" or "modulation", you can also use double-precision commands (LSB + MSB), RPN/NRPN commands or custom MIDI messages. If you want to play notes, you might want to add Midiflow Scales behind this app in the Audiobus MIDI routing in order to map the notes to a scale. ADJUST MOTION RANGE The range selector at the bottom allows you to narrow down the motion range in which you want to control the parameter. The maximum range goes from -90 to +90 degrees. Use either the slider or the learn buttons to adjust the range according to your needs. CONTROL MULTIPLE PARAMETERS You can insert Midiflow Motion in Audiobus multiple times. That way, you can send multiple MIDI commands simultaneously. Each of them can be configured independently. For example, you can control the cutoff of a synth by rotation around the x-axis, and use the y-axis for the resonance parameter. It is like an x/y-pad, but with the whole iPad as the controller. You can also control parameters of different synths at the same time.

About

Aurora (MIDI Controller)

Transform space weather data into musical expression with this live MIDI controller. Connect to your DAW and map real-time electromagnetic readings to create unique soundscapes and dynamic tracks.

Highlights
  • Live data streaming from observatories
  • Flexible MIDI mapping
  • Connects to DAWs like Ableton Live
  • Cross-platform compatibility (iOS, macOS)
  • Creates ambient and techno music
Features
Read full description

Aurora is a live MIDI controller powered by real-time data from space weather observatories and satellites. Connect Aurora to your favorite DAW (like Ableton Live) and transform electromagnetic readings into musical expression. Features: • Live data streaming from NOAA and Dombås observatory • Flexible MIDI mapping for CC controls • Works across iPhone, iPad, and Mac Catalyst Whether you're crafting ambient soundscapes or building dynamic techno tracks, Aurora connects your music to the rhythms of the planet.

Screenshots

Midiflow Motion (Audiobus)4 screens
Aurora (MIDI Controller)4 screens

Verdict

The call

The clearest difference is rating: Aurora (MIDI Controller) at 5.0 against Midiflow Motion (Audiobus)'s 2.0. Aurora (MIDI Controller) also leads on update cadence (every 8 days vs every 11 months) and review sentiment (50% vs 40%). Midiflow Motion (Audiobus)'s advantage is price ($1.99 vs $2.99) and iOS requirement (10.2 vs 16.6). On ratings volume, ads, in-app purchases and monetization model 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

Midiflow Motion (Audiobus) costs $1.99 and Aurora (MIDI Controller) $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Aurora (MIDI Controller) holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 40% of Midiflow Motion (Audiobus)'s written reviews are positive against 50% of Aurora (MIDI Controller)'s.

UpkeepUpdate frequency

Midiflow Motion (Audiobus) ships an update every 11 months, Aurora (MIDI Controller) every 8 days. The most recent releases landed on November 13, 2026 and November 12, 2026 respectively.

Scorecard5 real differences · 5 level
Midiflow Motion (Audiobus) versus Aurora (MIDI Controller): the parameters behind the verdict, then further details
ParameterMidiflow Motion (Audiobus)Aurora (MIDI Controller)
Price$1.99 — better$2.99
Rating2.0 (1 ratings)5.0 (2 ratings) — better
Positive reviews40.0% of reviews50.0% of reviews — better
Number of ratings12 — better
Update frequencyEvery 11 monthsEvery 8 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.2 — better16.6
Further details — not scored
Size5 MB6 MB
Age rating4+4+
DeveloperJohannes DoerrJason Snell

Customer experience

Midiflow Motion (Audiobus)

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews5 reviews
Positive40.0%
Neutral20.0%
Negative40.0%

Aurora (MIDI Controller)

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

In-app purchases

None

Midiflow Motion (Audiobus)

No in-app purchases

None

Aurora (MIDI Controller)

No in-app purchases

Questions

Is Midiflow Motion (Audiobus) free?
Midiflow Motion (Audiobus) costs $1.99, with no in-app purchases.
Is Aurora (MIDI Controller) free?
Aurora (MIDI Controller) costs $2.99, with no in-app purchases.
Which has better reviews, Midiflow Motion (Audiobus) or Aurora (MIDI Controller)?
Aurora (MIDI Controller) is rated higher. Midiflow Motion (Audiobus) averages 2.0 out of 5 from 1 ratings, while Aurora (MIDI Controller) averages 5.0 from 2 ratings.
Do Midiflow Motion (Audiobus) or Aurora (MIDI Controller) have ads?
Neither Midiflow Motion (Audiobus) nor Aurora (MIDI Controller) shows ads.
Which is updated more often, Midiflow Motion (Audiobus) or Aurora (MIDI Controller)?
Midiflow Motion (Audiobus) ships an update every 11 months, and Aurora (MIDI Controller) every 8 days. Most recently, Midiflow Motion (Audiobus) was updated on November 13, 2026 and Aurora (MIDI Controller) on November 12, 2026.

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