# Impaktor vs StepPolyArp

The clearest difference is price: Impaktor at $6.99 against StepPolyArp's $19.99. Impaktor also leads on in-app purchases (none vs 2). StepPolyArp's advantage is rating (4.8 vs 3.7) and update cadence (every 2 months vs every 12 months). On ratings volume, ads, monetization model and device support there is nothing between them.

Impaktor costs $6.99 and StepPolyArp $19.99 up front. StepPolyArp sells 2 one-off in-app purchases. Impaktor asks for nothing beyond the download.

StepPolyArp holds the better App Store score, 4.8 against 3.7. Both are backed by a comparable volume of ratings — 53 and 48 respectively. Written reviews point the same way: 79% of Impaktor's written reviews are positive against 87% of StepPolyArp's.

Impaktor ships an update every 12 months, StepPolyArp every 2 months. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Impaktor | StepPolyArp |
| --- | --- | --- |
| Price | **$6.99** | $19.99 |
| Rating | [3.7 (53 ratings)](https://appshunter.io/ios/app/impaktor/id557824278/reviews) | **[4.8 (48 ratings)](https://appshunter.io/ios/app/steppolyarp/id1361313588/reviews)** |
| Number of ratings | **53** | 48 |
| Positive reviews | 78.9% of reviews | **87.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 17 MB | 38 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [BeepStreet](https://appshunter.io/developer/321412321) | [Laurent Colson](https://appshunter.io/developer/381525765) |

## What reviewers say

### Impaktor

[App page](https://appshunter.io/ios/app/impaktor/id557824278)

This app transforms any surface into a playable percussion instrument using your device's microphone. It offers a vast sonic palette with advanced sound modules and synthesis types, allowing for a wide range of acoustic, electronic, and industrial tones. Enjoy a realistic virtual drumming experience with low latency and a 6-track recorder.

**Highlights:** Surface-to-percussion instrument transformation, Advanced sound module simulation, Semi-modular synthesis architecture, Physical modeling, FM, and noise shaping synthesis, 6-track audio recorder with 3D panning, Ultra-low latency performance

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Extraordinary app
- 👍 Responsive and intuitive
- 👍 Sleek and appealing interface
- 🎨 Versatile and expressive sounds
- 🎨 Organic and natural feel

**What reviewers complain about**

- 🐛 Crashes with Inter-App Audio
- 🐛 Issues with WAV exports
- 🐛 Latency problems on certain devices
- 🐛 Compatibility issues with iOS updates
- 🐛 Unreliable saving functionality

**Reported bugs**

- Crashes with Inter-App Audio
- Issues with WAV exports
- Latency problems on certain devices
- Compatibility issues with iOS updates
- Unreliable saving functionality

**Requested features**

- MIDI support
- Audio import functionality
- Ableton Link sync
- More quantization options
- Multitrack export


### 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 |


## Frequently asked questions

### Is Impaktor free?

Impaktor costs $6.99, with no in-app purchases.

### Is StepPolyArp free?

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

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

StepPolyArp is rated higher. Impaktor averages 3.7 out of 5 from 53 ratings, while StepPolyArp averages 4.8 from 48 ratings.

### Do Impaktor or StepPolyArp have ads?

Neither Impaktor nor StepPolyArp shows ads.

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

Impaktor ships an update every 12 months, and StepPolyArp every 2 months. Most recently, Impaktor was updated on October 16, 2026 and StepPolyArp on October 15, 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.*