PolyPhase vs mKer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PolyPhase
Create complex, interwoven melodies and rhythms with a generative sequencer. Control note generation, randomize sequences, and integrate with external MIDI hardware or the included wavetable synthesizer. Save and recall your creations with presets and snapshots.
- Generative melody creation with phase offsets
- 8 independent sequencers with customizable properties
- Draw own notes or use intelligent randomization
- Wavetable synthesizer with FX
- MIDI output and input support
- Global Key/Scale filtering and Chord Masks
- Save/Load presets and Snapshots
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PolyPhase is a generative sequencer! Melodies on a Master Track are created on the fly & copied, with phase offsets, to Follower Tracks. This structure, along with the interplay of various probabilities, leads to interwoven melodies and rhythms. You can disable the generation of notes & draw your own, or select some of the randomization functions Send MIDI to external hardware, other iOS instruments, or use the included wavetable synthesizer! - 8 independent Sequencers with their own rate, direction, transposition & other properties - Disable the generation of notes to draw your own, or use some of the intelligent functions provided - Random Euclid & Drum Sequences - The Wavetable Synth + FX lets you use PolyPhase even if you don't own any external Instruments - Filter notes to a Global Key / Scale and toggle Chord Masks - Save / Load Presets - Snapshots for install recall of your Sequences - Intelligently Randomize and Morph your Sequences & Synth sounds - Accepts external MIDI clock & can provide clock to other devices - Audiobus (Audio / State) & Inter-App Audio support - Link Support
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!
Verdict
The clearest difference is price: mKer at $3.99 against PolyPhase's $19.99. PolyPhase's advantage is review sentiment (76% vs 64%) and iOS requirement (10.0 vs 13.0). On rating, ratings volume, update cadence and ads 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
PolyPhase costs $19.99 and mKer $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.6 for PolyPhase against 4.5 for mKer. Both are backed by a comparable volume of ratings — 26 and 22 respectively. Written reviews are what separate them: 76% of PolyPhase's written reviews are positive against 64% of mKer's.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.
| Parameter | PolyPhase | mKer |
|---|---|---|
| Price | $19.99 | $3.99 — better |
| Rating | 4.6 (26 ratings) — better | 4.5 (22 ratings) |
| Positive reviews | 76.2% of reviews — better | 63.6% of reviews |
| Number of ratings | 26 — better | 22 |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPad |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 35 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | Marcos Kohler | Axart Labs OU |
Customer experience
PolyPhase
mKer
In-app purchases
PolyPhase
No in-app purchases
mKer
No in-app purchases
Questions
Is PolyPhase free?
Is mKer free?
Which has better reviews, PolyPhase or mKer?
Do PolyPhase or mKer have ads?
Which is updated more often, PolyPhase or mKer?
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