# Poseidon Synth vs Popsicle FX

The clearest difference is rating: Popsicle FX at 4.5 against Poseidon Synth's 4.0. Popsicle FX also leads on update cadence (weekly vs every 4 months) and review sentiment (69% vs 59%). Poseidon Synth's advantage is price ($7.99 vs $12.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Poseidon Synth costs $7.99 and Popsicle FX $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Popsicle FX holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 33 and 37 respectively. Written reviews point the same way: 59% of Poseidon Synth's written reviews are positive against 69% of Popsicle FX's.

Poseidon Synth ships an update every 4 months, Popsicle FX weekly. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Poseidon Synth | Popsicle FX |
| --- | --- | --- |
| Price | **$7.99** | $12.99 |
| Rating | [4.0 (33 ratings)](https://appshunter.io/ios/app/poseidon-synth/id1045058006/reviews) | **[4.5 (37 ratings)](https://appshunter.io/ios/app/popsicle-fx/id1503338046/reviews)** |
| Number of ratings | 33 | **37** |
| Positive reviews | 58.8% of reviews | **68.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Paid | Paid |
| Size | 328 MB | 47 MB |
| Requires iOS | 12.0 | **11.4** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Harry Gohs](https://appshunter.io/developer/382428644) | [Kai Aras](https://appshunter.io/developer/370820899) |

## What reviewers say

### 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


### Popsicle FX

[App page](https://appshunter.io/ios/app/popsicle-fx/id1503338046)

This app offers a dual multi-effects processor with 24 distinct audio effects. It allows for flexible routing of effects in series, parallel, or stereo channels, and features an XY pad for dynamic parameter control. An advanced mode provides a mod-matrix, LFO, and Envelope Follower for complex sound design.

**Highlights:** 2 independent stereo effects engines, 24 effect algorithms, Series, parallel, and stereo channel routing, Recordable XY Pad for parameter control, Advanced mod-matrix with LFO and Envelope Follower, AUv3 and standalone support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Poseidon Synth free?

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

### Is Popsicle FX free?

Popsicle FX costs $12.99, with no in-app purchases.

### Which has better reviews, Poseidon Synth or Popsicle FX?

Popsicle FX is rated higher. Poseidon Synth averages 4.0 out of 5 from 33 ratings, while Popsicle FX averages 4.5 from 37 ratings.

### Do Poseidon Synth or Popsicle FX have ads?

Neither Poseidon Synth nor Popsicle FX shows ads.

### Which is updated more often, Poseidon Synth or Popsicle FX?

Poseidon Synth ships an update every 4 months, and Popsicle FX weekly. Most recently, Poseidon Synth was updated on October 7, 2026 and Popsicle FX on October 1, 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.*