# shapesynth vs ScalePlay

The clearest difference is price: shapesynth at $4.99 against ScalePlay's $9.99. shapesynth also leads on device support (3 vs 1) and iOS requirement (9.0 vs 26.0). On rating, review sentiment, ratings volume and update cadence there is nothing between them.

shapesynth costs $4.99 and ScalePlay $9.99 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 — 4.9 for shapesynth against 4.9 for ScalePlay. Both are backed by a comparable volume of ratings — 24 and 10 respectively. Written reviews are what separate them: 65% of shapesynth's written reviews are positive against 71% of ScalePlay's.

shapesynth ships an update every 2 months, ScalePlay every 3 months. The most recent releases landed on October 11, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | shapesynth | ScalePlay |
| --- | --- | --- |
| Price | **$4.99** | $9.99 |
| Rating | [4.9 (24 ratings)](https://appshunter.io/ios/app/shapesynth/id431097161/reviews) | [4.9 (10 ratings)](https://appshunter.io/ios/app/scaleplay/id1140530163/reviews) |
| Number of ratings | **24** | 10 |
| Positive reviews | 65.0% of reviews | **71.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | Paid |
| Size | 8 MB | 14 MB |
| Requires iOS | **9.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Erik Sigth](https://appshunter.io/developer/385275335) | [RoGame Software](https://appshunter.io/developer/285831223) |

## What reviewers say

### shapesynth

[App page](https://appshunter.io/ios/app/shapesynth/id431097161)

Create unique retro-inspired sounds by drawing oscillator waveforms. This polyphonic synthesizer offers extensive modulation options, built-in effects, and recording capabilities. Seamlessly integrate with other music apps and hardware for a versatile creative experience.

**Highlights:** Draw custom oscillator waveforms, 16-voice polyphony, Arpeggiator and stereo delay, Resonant filter, Parameter modulation via keyboard, MPE, accelerometer, Tape recorder with infinite overdubs, Inter-app audio and AUv3 support

**Features:** Vision Pro support

**In-app purchases:** none


### ScalePlay

[App page](https://appshunter.io/ios/app/scaleplay/id1140530163)

This app generates intricate musical patterns and sequences using complex scale theory. It's a powerful tool for both music production and education, offering scale references, virtual instruments, and interactive playback features.

**Highlights:** Generates intricate ostinatos and sequences, Applies complex scale patterns, User-defined songforms and chord changes, Scale references for hundreds of scales, Nine virtual instruments and 128 sounds, Visualizes scale relations, Interactive playback with generated patterns

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

**In-app purchases:** none


## Frequently asked questions

### Is shapesynth free?

shapesynth costs $4.99, with no in-app purchases.

### Is ScalePlay free?

ScalePlay costs $9.99, with no in-app purchases.

### Which has better reviews, shapesynth or ScalePlay?

shapesynth and ScalePlay are both rated 4.9 out of 5 on the App Store, from 24 and 10 ratings respectively.

### Do shapesynth or ScalePlay have ads?

Neither shapesynth nor ScalePlay shows ads.

### Which is updated more often, shapesynth or ScalePlay?

shapesynth ships an update every 2 months, and ScalePlay every 3 months. Most recently, shapesynth was updated on October 11, 2026 and ScalePlay on September 24, 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.*