# StepPolyArp vs mfxStrip

The clearest difference is price: mfxStrip at $2.99 against StepPolyArp's $19.99. mfxStrip also leads on in-app purchases (none vs 2) and rating (5.0 vs 4.8). StepPolyArp's advantage is review sentiment (87% vs 50%) and update cadence (every 2 months vs every 8 months). On ads, monetization model and device support there is nothing between them.

StepPolyArp costs $19.99 and mfxStrip $2.99 up front. StepPolyArp sells 2 one-off in-app purchases. mfxStrip asks for nothing beyond the download.

mfxStrip holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: StepPolyArp has 48 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 87% of StepPolyArp's written reviews are positive against 50% of mfxStrip's, so the app with the better star average is not the one people write more warmly about.

StepPolyArp ships an update every 2 months, mfxStrip every 8 months. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | StepPolyArp | mfxStrip |
| --- | --- | --- |
| Price | $19.99 | **$2.99** |
| Rating | [4.8 (48 ratings)](https://appshunter.io/ios/app/steppolyarp/id1361313588/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/mfxstrip/id1451194722/reviews)** |
| Number of ratings | **48** | 4 |
| Positive reviews | **87.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Paid | Paid |
| Size | 38 MB | 2 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Laurent Colson](https://appshunter.io/developer/381525765) | [Audeonic Apps](https://appshunter.io/developer/351607509) |

## What reviewers say

### StepPolyArp

[App page](https://appshunter.io/ios/app/steppolyarp/id1361313588)

This app functions as a real-time polyphonic and polyrhythmic MIDI step arpeggiator and sequencer. It can generate melodic patterns from input or operate as a standalone sequencer. Save and sync unlimited presets with iCloud, featuring extensive customization for patterns and step controllers.

**Highlights:** Standalone app and AUv3 MIDI effect plugin, Arpeggiator and step sequencer modes, Programmable step matrix with transposition lines, Polyrhythmic step controllers, Internal sound bank, Ableton Link and MIDI sync support, Unlimited preset saving with iCloud sync

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dance Horizons | $4.99 | one-time |
| Analog Sequence | $4.99 | one-time |


### mfxStrip

[App page](https://appshunter.io/ios/app/mfxstrip/id1451194722)

This MIDI effect plugin offers a collection of essential MIDI manipulations in a single package. It allows for filtering and remapping of channels and notes, and can convert a polyphonic keyboard into a monophonic one. Designed for CoreMIDI or AUv3 hosts, it provides powerful control over MIDI data.

**Highlights:** MIDI channel filtering, MIDI channel remapping, Note remapping, Polyphonic to monophonic conversion, AUv3 plugin format, CoreMIDI support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is StepPolyArp free?

StepPolyArp costs $19.99, and also offers in-app purchases.

### Is mfxStrip free?

mfxStrip costs $2.99, with no in-app purchases.

### Which has better reviews, StepPolyArp or mfxStrip?

mfxStrip is rated higher. StepPolyArp averages 4.8 out of 5 from 48 ratings, while mfxStrip averages 5.0 from 4 ratings.

### Do StepPolyArp or mfxStrip have ads?

Neither StepPolyArp nor mfxStrip shows ads.

### Which is updated more often, StepPolyArp or mfxStrip?

StepPolyArp ships an update every 2 months, and mfxStrip every 8 months. Most recently, StepPolyArp was updated on October 15, 2026 and mfxStrip on October 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*