Comparison

Midiflow Splitter (Audiobus) vs Lullaby Button

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

Head to head
About

Midiflow Splitter (Audiobus)

This MIDI effect app allows musicians to divide their external keyboard into multiple zones, assigning each zone to different synth apps. It offers powerful configuration options for split and layer setups, including octave transposition and controller assignment per synth.

Highlights
  • Create split and layer configurations
  • Assign key zones to synth apps
  • Transpose each synth app in octaves
  • Control active controllers per synth
  • Solo individual synth sounds
  • Supports multiple keyboards
Features
Read full description

If you play your synth apps with an external keyboard, Midiflow Splitter is an essential tool for you. This MIDI effect app for Audiobus 3 lets you create split and layer configurations in an easy but powerful way. Thanks to Audiobus State Saving, everything can be saved and recalled when your show is about to start. + Add any number of split points + Assign resulting key zones to synth apps + Transpose each synth app in octaves + Choose which controllers (sustain, pitch-bend, etc.) should be active for each synth app + Solo sounds + Supports multiple keyboards NOTE: This app requires Audiobus 3. Create at least two MIDI pipelines with your keyboard as input and different synth apps as output. Then insert this app into the effect ports. MANAGAGE SPLIT POINTS AND ASSIGN ZONES Midiflow Splitter shows all synth apps as rows above the input keyboard. For each synth, you can select in which zone it should be active. The zones of the keyboard are defined by split points. Move, add, or remove split points to adjust the zones. If you are using multiple keyboards, they will show up with independent split point selectors. OCTAVE SHIFT AND CONTROLLER ASSIGNMENT An octave shift can be applied to each synth in your configuration. This is useful if you have assigned a sound to a zone on the lower part of the keyboard, but still want to trigger high notes. Just shift the notes by a couple of octaves, and you're done. You can also activate or deactivate controllers like sustain or pitch-bend for each synth app individually. That way, your controllers only affect the sounds you really want to manipulate, and keep the others unchanged. SOLO After you have set up your split and layer configuration, you might need to tweak a synth's sound again. By activating "solo", all other synth apps will be deactivated so that you have the whole keyboard for this one sound. This is very handy if you have arranged the sound in a layer and quickly want to mute the other sounds for a moment.

About

Lullaby Button

Features
Read full description

Lullaby Button is a simple and elegant sleep companion designed to help babies relax and fall asleep faster. With just one tap, calming lullaby music begins to play, creating a peaceful and comforting bedtime atmosphere. The app is intentionally minimal — no complicated menus, no distractions — just soothing music designed to support healthy baby sleep. Premium Subscription: • Unlimited lullaby playback • Continuous background sleep music • Future lullaby updates and improvements Free Trial: Try all premium features with a 3-day free trial. After the trial period, you can choose a monthly or yearly subscription plan. Subscription Details: • Monthly subscription: $0.99 per month • Yearly subscription: $4.99 per year • Payment will be charged to your Apple ID account at confirmation of purchase. • Subscription automatically renews unless canceled at least 24 hours before the end of the current period. • Your account will be charged for renewal within 24 hours prior to the end of the current period. • You can manage or cancel your subscription anytime in your App Store account settings. Terms of Use: https://lullabybutton.com/terms-of-use/ Privacy Policy: https://lullabybutton.com/privacy-policy/

Screenshots

Midiflow Splitter (Audiobus)4 screens
Lullaby Button4 screens

Verdict

The call

The clearest difference is price: Lullaby Button at Free against Midiflow Splitter (Audiobus)'s $2.99. Lullaby Button also leads on update cadence (every 9 days vs every 11 months). Midiflow Splitter (Audiobus)'s advantage is in-app purchases (none vs 2) and iOS requirement (10.2 vs 13.0). 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

CostPrice · In-app purchases · Ads · Monetization

Lullaby Button is free to download; Midiflow Splitter (Audiobus) costs $2.99 up front. Lullaby Button sells 2 in-app purchases, starting at $0.99 per month. Midiflow Splitter (Audiobus) asks for nothing beyond the download.

UpkeepUpdate frequency

Midiflow Splitter (Audiobus) ships an update every 11 months, Lullaby Button every 9 days. The most recent releases landed on August 18, 2026 and September 20, 2026 respectively.

Scorecard4 real differences · 6 level
Midiflow Splitter (Audiobus) versus Lullaby Button: the parameters behind the verdict, then further details
ParameterMidiflow Splitter (Audiobus)Lullaby Button
Price$2.99Free — better
Rating3.4 (10 ratings) — better—
Positive reviews31.3% of reviews—
Number of ratings10 — better—
Update frequencyEvery 11 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.2 — better13.0
Further details — not scored
Size5 MB152 MB
Age rating4+4+
DeveloperJohannes DoerrOSMAN MURAT TUGSUZ

In-app purchases

None

Midiflow Splitter (Audiobus)

No in-app purchases

2 purchases

Lullaby Button

Subscriptions2
  • Lullaby Button Premium3 Days trial$0.991 Month
  • Lullaby Button Premium3 Days trial$4.991 Year

Questions

Is Midiflow Splitter (Audiobus) free?
Midiflow Splitter (Audiobus) costs $2.99, with no in-app purchases.
Is Lullaby Button free?
Lullaby Button is free to download, with in-app purchases available.
Do Midiflow Splitter (Audiobus) or Lullaby Button have ads?
Neither Midiflow Splitter (Audiobus) nor Lullaby Button shows ads.
Which is updated more often, Midiflow Splitter (Audiobus) or Lullaby Button?
Midiflow Splitter (Audiobus) ships an update every 11 months, and Lullaby Button every 9 days. Most recently, Midiflow Splitter (Audiobus) was updated on August 18, 2026 and Lullaby Button on September 20, 2026.

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