# StepPolyArp vs MIDI Tools

The clearest difference is price: MIDI Tools at $4.99 against StepPolyArp's $19.99. MIDI Tools also leads on in-app purchases (none vs 2) and update cadence (every 4 days vs every 2 months). StepPolyArp's advantage is review sentiment (87% vs 70%) and device support (4 vs 1). On rating, ratings volume, ads and monetization model there is nothing between them.

StepPolyArp costs $19.99 and MIDI Tools $4.99 up front. StepPolyArp sells 2 one-off in-app purchases. MIDI Tools asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for StepPolyArp against 4.7 for MIDI Tools. Both are backed by a comparable volume of ratings — 48 and 22 respectively. Written reviews are what separate them: 87% of StepPolyArp's written reviews are positive against 70% of MIDI Tools's.

StepPolyArp ships an update every 2 months, MIDI Tools every 4 days. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | StepPolyArp | MIDI Tools |
| --- | --- | --- |
| Price | $19.99 | **$4.99** |
| Rating | **[4.8 (48 ratings)](https://appshunter.io/ios/app/steppolyarp/id1361313588/reviews)** | [4.7 (22 ratings)](https://appshunter.io/ios/app/midi-tools/id1446209019/reviews) |
| Number of ratings | **48** | 22 |
| Positive reviews | **86.7% of reviews** | 70.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Paid | Paid |
| Size | 38 MB | 11 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Laurent Colson](https://appshunter.io/developer/381525765) | [Victor Porof](https://appshunter.io/developer/1446209018) |

## 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 |


### MIDI Tools

[App page](https://appshunter.io/ios/app/midi-tools/id1446209019)

This application provides a suite of MIDI audio units for iOS, allowing users to manipulate MIDI messages within their DAW's effects chain. It offers tools for altering velocity, transposing keys, monitoring events, and routing MIDI to external hardware or internal buses.

**Highlights:** MIDI message manipulation within DAW effects chains, 8 AUv3 MIDI audio units, Velocity and aftertouch alteration, Key transposition and range restriction, MIDI event monitoring and reporting, Tempo-synced trigger blocking, External and internal MIDI routing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is StepPolyArp free?

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

### Is MIDI Tools free?

MIDI Tools costs $4.99, with no in-app purchases.

### Which has better reviews, StepPolyArp or MIDI Tools?

StepPolyArp is rated higher. StepPolyArp averages 4.8 out of 5 from 48 ratings, while MIDI Tools averages 4.7 from 22 ratings.

### Do StepPolyArp or MIDI Tools have ads?

Neither StepPolyArp nor MIDI Tools shows ads.

### Which is updated more often, StepPolyArp or MIDI Tools?

StepPolyArp ships an update every 2 months, and MIDI Tools every 4 days. Most recently, StepPolyArp was updated on October 14, 2026 and MIDI Tools on October 9, 2026.

---

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