mKer vs BrainBud
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
mKer
A versatile MIDI step sequencer designed for music creation. It offers multiple outputs, extensive pattern and lane customization, and advanced step editing. Best used within an AUv3 host app for sound generation.
- 8 MIDI outputs
- 64 Patterns with 16 Lanes each
- Customizable Steps and Step Size per Lane
- Advanced Step Parameters (Pitch, Velocity, Probability, etc.)
- Flexible Editor with Step Entry Keyboard
- 32 Clips with Repeat Functionality
- Performance Tab with Assignable Sliders and Morphing
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*** Note *** Although mKer can run as a stand-alone app, the recommended way to use it is as an AUv3 plugin from inside a suitable AU Host app that supports MIDI Processors such as AUM, Audiobus, Cubasis etc. Please also note that mKer is a MIDI app/plugin. That means that it does not produce sound itself - it needs to be connected to an audio source that can receive MIDI. mKer is a versatile, multi-output MIDI step sequencer with an extensive range of features. These include: - 8 MIDI outputs - 64 Patterns - 16 Lanes (aka tracks) per Pattern - Independent number of Steps (1-32) and Step Size (1/64-256 beats) per Lane per Pattern - Every step can play either a single note, an interval (2 notes) or a chord (3 or 4 notes) - Lane Step parameters: Play Cycles, Skip Cycles, Play Offset Cycles, Pitch, Velocity, Probability, Offset (can be used for ‘swing’ like effects), Repeat (rachet) and Gate - A flexible Editor that includes a step entry keyboard, parameter sliders and a variety of options and utilities designed for to make the workflow intuitive and fast - 32 Clips with 1-8 Steps per Clip, 1-128 repeats per step (every clip step has one pattern) - 3 Play Modes: Pattern, Clip, Sequence (all Clips) - A Performance tab with 10 fully assignable MIDI sliders, a 12-snapshot bank and morphing function between the snapshots... - MIDI step input and real-time recording - 12-track beat generator with six genres, density, intensity and GM beat mapping ... and more!
BrainBud
This app acts as a central controller for other music creation applications, allowing you to manage keys and scales simultaneously. It integrates with a variety of Bud apps via MIDI, enabling synchronized changes and broadcasting of musical parameters. Experiment with randomization and automate settings through its AUv3 plugin.
- Centralized key and scale control
- MIDI out to multiple Bud apps
- Budcast for parameter broadcasting
- Randomize musical parameters
- AUv3 plugin for automation
- Requires other Bud apps to function
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BrainBud controls the keys and scales of the Bud apps all at once. Connect BrainBud’s MIDI out to MIDI inputs of: - SnakeBud - PolyBud - MelodyBud - ShiftBud - ScaleBud 2 - In Theory - Textquencer - Binarhythmic - Auto Bass - BounceBud - MuseBud - Kebarp - FuncBud - Note to Be You can also broadcast the current key/scale to the newly connected apps with Budcast button. If you’d like to experiment, you can try the randomise button. With the AUv3 plugin, you can change the BrainBud's parameters or even automate them with AU parameters. For using the AUv3 plugin make sure you have an AUv3 host app such as AUM, Cubasis, Nanostudio, apeMatrix. BrainBud is a MIDI based app and requires other Bud apps present in order to work right. If you don't have any other Bud apps mentioned above, you can't make a use of BrainBud. BrainBud doesn't produce any kind of sound on its own.
Screenshots
Verdict
The clearest difference is review sentiment: BrainBud at 100% against mKer's 64%. BrainBud also leads on rating (5.0 vs 4.5) and device support (3 vs 1). mKer's advantage is update cadence (every 3 weeks vs every 2 months) and ratings volume (22 vs 2). On ads, in-app purchases, monetization model and iOS requirement 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
mKer costs $3.99 and BrainBud $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BrainBud holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: mKer has 22 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 64% of mKer's written reviews are positive against 100% of BrainBud's.
mKer ships an update every 3 weeks, BrainBud every 2 months. The most recent releases landed on August 22, 2026 and September 21, 2026 respectively.
| Parameter | mKer | BrainBud |
|---|---|---|
| Price | $3.99 | $2.99 — better |
| Rating | 4.5 (22 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 63.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 22 — better | 2 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 57 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Axart Labs OU | Cem Olcay |
Customer experience
mKer
BrainBud
In-app purchases
mKer
No in-app purchases
BrainBud
No in-app purchases









