# Sparkle vs Poseidon Synth

The clearest difference is rating: Sparkle at 5.0 against Poseidon Synth's 4.0. Sparkle also leads on review sentiment (96% vs 59%) and update cadence (every 6 weeks vs every 4 months). Poseidon Synth's advantage is price ($7.99 vs $9.99) and iOS requirement (12.0 vs 15.6). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Sparkle costs $9.99 and Poseidon Synth $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sparkle holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 48 and 33 respectively. Written reviews point the same way: 96% of Sparkle's written reviews are positive against 59% of Poseidon Synth's.

Sparkle ships an update every 6 weeks, Poseidon Synth every 4 months. The most recent releases landed on September 26, 2026 and August 4, 2026 respectively.

## The numbers

| Metric | Sparkle | Poseidon Synth |
| --- | --- | --- |
| Price | $9.99 | **$7.99** |
| Rating | **[5.0 (48 ratings)](https://appshunter.io/ios/app/sparkle-cross-synthesis/id818477094/reviews)** | [4.0 (33 ratings)](https://appshunter.io/ios/app/poseidon-synth/id1045058006/reviews) |
| Number of ratings | **48** | 33 |
| Positive reviews | **95.8% of reviews** | 58.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Paid | Paid |
| Size | 35 MB | 328 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [apeSoft](https://appshunter.io/developer/464660782) | [Harry Gohs](https://appshunter.io/developer/382428644) |

## What reviewers say

### Sparkle

[App page](https://appshunter.io/ios/app/sparkle-cross-synthesis/id818477094)

Transform audio by transferring the temporal structure of one sound to another while preserving spectral properties. Create unique sound transformations with advanced spectral hybridization algorithms. Ideal for musicians and sound designers seeking innovative audio manipulation.

**Highlights:** Spectral hybridization, Envelope preservation, Phase-sync processing, High-quality sound transformations, Temporal structure transfer, Spectral property preservation

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

**In-app purchases:** none


### Poseidon Synth

[App page](https://appshunter.io/ios/app/poseidon-synth/id1045058006)

Explore vast sonic landscapes with this advanced synthesizer. It combines analog synthesis with spectral modeling for unique sound design, offering powerful filters, spatialization, and a vast library of presets and sound models.

**Highlights:** Spectral model oscillator, F-Domain Filter with variable slope, Spatializer for stereo movement, Extensive sound browser, Arpeggiator with programmable sequences, Built-in effects suite

**In-app purchases:** none


## Frequently asked questions

### Is Sparkle free?

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

### Is Poseidon Synth free?

Poseidon Synth costs $7.99, with no in-app purchases.

### Which has better reviews, Sparkle or Poseidon Synth?

Sparkle is rated higher. Sparkle averages 5.0 out of 5 from 48 ratings, while Poseidon Synth averages 4.0 from 33 ratings.

### Do Sparkle or Poseidon Synth have ads?

Neither Sparkle nor Poseidon Synth shows ads.

### Which is updated more often, Sparkle or Poseidon Synth?

Sparkle ships an update every 6 weeks, and Poseidon Synth every 4 months. Most recently, Sparkle was updated on September 26, 2026 and Poseidon Synth on August 4, 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.*