# shapesynth vs Circlo

The clearest difference is price: Circlo at Free against shapesynth's $4.99. Circlo also leads on review sentiment (100% vs 65%). shapesynth's advantage is update cadence (every 2 months vs every 33 months) and ratings volume (24 vs 5). On rating, ads, in-app purchases and device support there is nothing between them.

Circlo is free to download; shapesynth costs $4.99 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 5.0 for Circlo. Both are backed by a comparable volume of ratings — 24 and 5 respectively. Written reviews are what separate them: 65% of shapesynth's written reviews are positive against 100% of Circlo's.

shapesynth ships an update every 2 months, Circlo every 33 months. Both last shipped on October 23, 2026.

## The numbers

| Metric | shapesynth | Circlo |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.9 (24 ratings)](https://appshunter.io/ios/app/shapesynth/id431097161/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/circlo-ambient-clock/id523405247/reviews)** |
| Number of ratings | **24** | 5 |
| Positive reviews | 65.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 33 months |
| Monetization | Paid | **Free** |
| Size | 8 MB | 14 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Erik Sigth](https://appshunter.io/developer/385275335) | [Johan Halin](https://appshunter.io/developer/507882387) |

## 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


### Circlo

[App page](https://appshunter.io/ios/app/circlo-ambient-clock/id523405247)

This app offers a unique ambient audiovisual experience with a pulsating circle display and a dynamic soundtrack that changes intensity throughout the day. Users can customize color schemes and control the music through a simple double-tap interface.

**Highlights:** Ambient audiovisual clock, Dynamic soundtrack, Pulsating circle display, Customizable color schemes, Music on/off toggle, Intuitive double-tap controls

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is shapesynth free?

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

### Is Circlo free?

Circlo is free to download, with no in-app purchases.

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

Circlo is rated higher. shapesynth averages 4.9 out of 5 from 24 ratings, while Circlo averages 5.0 from 5 ratings.

### Do shapesynth or Circlo have ads?

Neither shapesynth nor Circlo shows ads.

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

shapesynth ships an update every 2 months, and Circlo every 33 months. Most recently, shapesynth was updated on October 23, 2026 and Circlo on October 23, 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.*