Comparison

Midiflow Keyboard (Audiobus) vs LoopMemo

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

Head to head
About

Midiflow Keyboard (Audiobus)

This music app provides a versatile keyboard interface for controlling multiple synth applications simultaneously. It offers various layouts, including piano, scales, and chords, with customizable controls for pitch, modulation, and note velocity. Designed to integrate seamlessly with Audiobus 3, it enhances mobile music production.

Highlights
  • Piano, scale, and chord layouts
  • Multiple independent keyboard strips
  • Adjustable key range and octaves
  • Pitch-bend and modulation wheels
  • Hold mode with unisono option
  • Velocity control via touch or accelerometer
  • Split View/Slide Over support
Features
Read full description

This keyboard for Audiobus 3 allows you to perform music with multiple synth apps at the same time. Use the piano or scale layout to play single notes, and select the chord keyboard for accompaniments. With Audiobus 3, it's super simple to connect the keyboard to your synth apps. + Piano layout + Scale layouts (Min/Maj Blue, Ionian, Dorian, ...) + Chord layout + 2 independent keyboard strips on the iPad, 3 on the iPad Pro + Quickly switch sounds + Adjust visible key range and + Jump to other octaves using up/down buttons + Transpose output in half-tone steps + Modulation wheel + Pitch-Bend wheel + "Hold" mode with unisono option + Note velocity can be controlled via position or acceleration of the touch, or set to a fixed value + Use Split View/Slide Over to display the keyboard next to other apps 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. DETAILS Midiflow Keyboard is probably the most essential MIDI companion app for Audiobus. It allows you to trigger your synth apps with sophisticated layouts for single notes or chords. With its two keyboards, you can even perform with multiple sounds simultaneously. HANDY CONTROLS The streamlined user interface shows the most important controls on the main screen. Quickly change the visible key range in octave steps – you can even keep holding down keys while doing so. Switch on "hold" and keys will stay pressed until you hit them again. Or activate "unisono" and only one note will sound. And, of course, there are pitch-bend and modulation wheels for effects. PLAY WITH SENSITIVITY It's not only about which notes you play, but how you play them. By default, you play louder notes by hitting them further down the length of the key. You can also make the app interpret the actual velocity of your taps by using the accelerometer. However, if all you want is a fixed velocity on each tap, that is possible, too. OPTIMIZE YOUR LAYOUT Choose from a list of different keyboard styles that match your playing style best. The regular piano layout is just the beginning. You can select from a list of scale layouts to explore their different sounds and play solos without ever hitting a wrong note. Screen space is valuable – hide the pitch-bend and/or modulation wheel if you don't need them, making more space for keys. PLAY CHORDS LIKE A PIANIST Since it can be quite tricky to play chords on a touch screen, this app comes with a unique chord keyboard. The lower row triggers root notes, while the upper rows trigger chords. This layout makes it very easy to play chord accompaniments with index and middle finger that would require two full hands on a real piano. SWITCH SOUNDS QUICKLY The port selector in the upper right corner allows you to specify, for each keyboard, which sound to trigger. You can even select multiple destinations to layer the sounds. In order to reflect the active sound, the color scheme of the keyboard will adjust to match the app's icon. SPLIT VIEW AND SLIDE OVER Midiflow Keyboard works great in Split View and Slide Over, the two multitasking modes in iOS. Just swipe from the right screen side and launch the keyboard. That way, you can trigger nodes while making adjustments in an effect app or Audiobus itself. In order to take full advantage of the screen space, the keyboard is rotated 90 degrees. You can either use the right hand to play it while using the left hand in the main app, or simply rotate the device to use both hands for the keys.

About

LoopMemo

Features
Read full description

LoopMemo is a loop recorder anyone can pick up and play. Recording starts the moment you press ●, and pressing it again starts looping right away. Your first take sets the loop length — no BPM, no bars, no setup. Just capture the idea while it's fresh and start layering. PERFECT FOR • Jotting down melodies and riffs before you forget them • Practicing beatbox, a cappella, and vocal harmonies • Layering guitar or keyboard phrases in a one-person jam • Sketching rhythm patterns and sound ideas FEATURES • Loop recording with up to 4 tracks • Instant record & instant loop (Free mode) • Overdub with Layer or Replace, plus Undo • Per-track volume, pan, mute, and solo • Per-track timing adjust (10 ms / 50 ms steps, adjustable while playing) • Bar-sync mode for recording exactly on the grid, with metronome (BPM 40–240, master length of 4/8/16/32 bars, count-in, 3 click sounds) • Save and load projects • Export one loop cycle as an audio file and share it • Import your own audio and layer on top of it (Pro) • Stem export for finishing your track in a DAW (Pro) THREE SIMPLE STEPS 1. Press ● and record — voice, instruments, or hand claps 2. Press ● again and the loop starts playing instantly 3. Press ● on another track to layer while you listen FREE & PRO All core features — recording, looping, overdubbing — are free. LoopMemo Pro (one-time purchase) unlocks: • No ads (banner & full-screen) • Unlimited saved projects (free version: up to 3) • WAV (16-bit) export (free version: M4A) • Stem export (one WAV per track) • Importing your own audio files A sample-accurate audio engine keeps loop seams click-free and tracks tightly in sync. Headphones are recommended to keep the loop from bleeding into the microphone. Press ● and make your first loop.

Screenshots

Midiflow Keyboard (Audiobus)4 screens
LoopMemo4 screens

Verdict

The call

The clearest difference is price: LoopMemo at Free against Midiflow Keyboard (Audiobus)'s $2.99. LoopMemo also leads on update cadence (every 3 weeks vs every 9 months). Midiflow Keyboard (Audiobus)'s advantage is in-app purchases (none vs 1) and ads (none vs shown).

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

LoopMemo is free to download; Midiflow Keyboard (Audiobus) costs $2.99 up front. LoopMemo sells 1 one-off in-app purchase. Midiflow Keyboard (Audiobus) asks for nothing beyond the download.

UpkeepUpdate frequency

Midiflow Keyboard (Audiobus) ships an update every 9 months, LoopMemo every 3 weeks. The most recent releases landed on September 30, 2026 and October 8, 2026 respectively.

Scorecard6 real differences · 4 level
Midiflow Keyboard (Audiobus) versus LoopMemo: the parameters behind the verdict, then further details
ParameterMidiflow Keyboard (Audiobus)LoopMemo
Price$2.99Free — better
Rating5.0 (6 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 9 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS10.2 — better16.0
Further details — not scored
Size5 MB4 MB
Age rating4+4+
DeveloperJohannes DoerrHiroshi Yamazaki

In-app purchases

None

Midiflow Keyboard (Audiobus)

No in-app purchases

1 purchases

LoopMemo

One-time1
  • LoopMemo Pro$2.99

Questions

Is Midiflow Keyboard (Audiobus) free?
Midiflow Keyboard (Audiobus) costs $2.99, with no in-app purchases.
Is LoopMemo free?
LoopMemo is free to download, with in-app purchases available.
Do Midiflow Keyboard (Audiobus) or LoopMemo have ads?
LoopMemo shows ads; Midiflow Keyboard (Audiobus) does not.
Which is updated more often, Midiflow Keyboard (Audiobus) or LoopMemo?
Midiflow Keyboard (Audiobus) ships an update every 9 months, and LoopMemo every 3 weeks. Most recently, Midiflow Keyboard (Audiobus) was updated on September 30, 2026 and LoopMemo on October 8, 2026.

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