AUM vs Bluetooth MIDI Connect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AUM
This app is a versatile audio mixer, recorder, and connection hub for mobile devices. It allows users to connect various audio sources, route signals, apply effects, and record mixes with high fidelity. It supports advanced features like MIDI control, synchronization, and integration with other audio apps and hardware.
- Connect hardware inputs/outputs
- Route audio and MIDI
- Host Audio Unit extensions
- Record mixes and individual tracks
- Synchronize with Ableton Link
- Built-in processing nodes
- MIDI control and routing
Read full descriptionHide full description
AUM is the flexible audio mixer, recorder, and connection hub for your iPad, iPhone and iPod touch. Connect hardware inputs and outputs, Audio Unit extensions, Inter-App Audio apps, Audiobus, soundfile players, built-in signal processing and filters, in any configuration you want. Route anything to anywhere with mix-busses, effect sends, audiobus ports, and external multi-channel audio interfaces. Play hosted synths and instruments using the built-in keyboard or external MIDI controllers, or sequence them with AU MIDI plugins or from other apps using Virtual MIDI. Record mixes, individual tracks, or both, straight into the storage space of AudioShare (no copying of files needed), with synchronized start and end for perfect loops. Play back recordings, soundfiles and loops as channel sources in the mixer for backing tracks, further processing or mixing. Soundfiles can be opened from anywhere, including USB drives on iOS 13 and later. Route and filter MIDI in any way you like using the MIDI matrix. Combine and filter MIDI endpoints using MIDI buses. Synchronize everything with the transport clock and play in time with other apps or devices using Ableton Link. Connect external music machines and synchronize them with MIDI Clock. Includes built-in processing nodes for various stereo processing, Mid/Side balance and conversion, EQs and filters, limiting, clipping and saturation. Or use any 3rd party Audio Unit extension or Inter-App Audio effect. All controls in the mixer can be controlled via MIDI, including parameters of hosted and built-in plugins. "A brilliant idea that has been brilliantly executed. Top-notch technical stuff and highly recommended" - MusicAppBlog "Feature rich, powerful, intuitive, and simple to use" - DubSpot "Executes live mixing with surprising ease, with a load of extensive features under the hood, quick snappy response on the screen and audio" - AudioNewsRoom FEATURES • High quality audio up to 32-bit 192kHz • Clean and intuitive user interface with crisp vector graphics • Unlimited number of channels • Unlimited number of effect slots • Inserts and sends are configurable pre/post-fader • Internal busses for mixing, effect sends, signal splitting • Supports multi-channel audio interfaces for both inputs and outputs • Supports built-in speaker and mic, including stereo mic on devices that has it. • Supports Audio Unit extensions, Inter-App Audio and Audiobus • Route MIDI output from Audio Unit extensions • Supports Audio Unit multiple output and input busses (for side-chaining etc) • Highly accurate transport clock • Metronome with selectable output and optional pre-roll • Sends host sync to Audio Unit plugins and IAA apps • Play in time with Ableton Link, with Start/Stop support • Slave external hardware via MIDI Clock • FilePlayer with sync and looping with access to all your soundfiles • Records straight into AudioShare storage space • Record synchronized beat-perfect loops • Built-in nodes for stereo processing, filtering and dynamics • Latency compensation makes everything align at the outputs • Optional manual compensation using TimeOffset • Multiple Inter-App Audio / Audiobus output ports • Audiobus state saving • Built-in MIDI keyboard • Fully MIDI controllable • MIDI Matrix for routing MIDI anywhere • MIDI filtering for any MIDI destination • Combine MIDI sources or destinations using MIDI buses BUILT-IN SIGNAL PROCESSING • Stereo balance • Stereo to mono • Stereo panning • Mid/Side balance • Mid/Side - Stereo convert • Invert Phase • Parametric EQ • Low-shelf filter • High-shelf filter • Low-pass resonant filter • High-pass resonant filter • LP/HP combo filter • First order All-pass filter • Second order All-pass filter • Gain • Hard clip • Saturation • Lookahead peak limiter • System-provided Apple Audio Units
Bluetooth MIDI Connect
Wirelessly connect Korg's Bluetooth MIDI controllers to your iPhone or iPad. This app enables seamless integration for a variety of Korg devices, enhancing your mobile music production setup.
- Wireless Bluetooth MIDI connection
- Connects to Korg controllers
- Compatible with iPhone/iPad
- Seamless integration for music production
Read full descriptionHide full description
Korg's Bluetooth MIDI Connect allows you to easily connect Korg's Bluetooth MIDI compatible controllers such as microKEY Air, nanoKEY Studio, nanoKONTROL Studio wirelessly with your iPhone/iPad.
Screenshots
Verdict
The clearest difference is review sentiment: AUM at 82% against Bluetooth MIDI Connect's 25%. AUM also leads on rating (4.7 vs 2.5) and update cadence (every 3 months vs every 44 months). Bluetooth MIDI Connect's advantage is price (Free vs $24.99) and in-app purchases (none vs 4). On ads 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
Bluetooth MIDI Connect is free to download; AUM costs $24.99 up front. AUM sells 4 one-off in-app purchases. Bluetooth MIDI Connect asks for nothing beyond the download.
AUM holds the better App Store score, 4.7 against 2.5. That said, the two scores are not equally well evidenced: AUM has 535 ratings behind it against 60, so its average is the more settled of the two. Written reviews point the same way: 82% of AUM's written reviews are positive against 25% of Bluetooth MIDI Connect's.
AUM ships an update every 3 months, Bluetooth MIDI Connect every 44 months. The most recent releases landed on November 11, 2026 and November 6, 2026 respectively.
| Parameter | AUM | Bluetooth MIDI Connect |
|---|---|---|
| Price | $24.99 | Free — better |
| Rating | 4.7 (535 ratings) — better | 2.5 (60 ratings) |
| Positive reviews | 81.9% of reviews — better | 24.5% of reviews |
| Number of ratings | 535 — better | 60 |
| Update frequency | Every 3 months — better | Every 44 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Kymatica AB | KORG INC. |
Customer experience
AUM
Bluetooth MIDI Connect
Bugs and requests
AUM
Reported bugs
3 issues- Crashes or freezes when using certain plugin combinations
- Compatibility issues with iOS 15 and newer
- Inconsistent MIDI transport controls
Requested features
4 requests- Add MIDI clock sync receive capability
- Implement a timeline/sequencer view
- Provide more visual customization options
- Improve support for external hardware integration
Bluetooth MIDI Connect
Not enough reviews yet to summarise bugs or requests.
In-app purchases
AUM
- Small Tip$0.99
- Medium Tip$1.99
- Large Tip$4.99
Show 1 moreShow fewer
- Huge Tip$9.99
Bluetooth MIDI Connect
No in-app purchases
Questions
Is AUM free?
Is Bluetooth MIDI Connect free?
Which has better reviews, AUM or Bluetooth MIDI Connect?
Do AUM or Bluetooth MIDI Connect have ads?
Which is updated more often, AUM or Bluetooth MIDI Connect?
Other comparisons















