# Poseidon Synth vs Zeitmaschine

The clearest difference is price: Zeitmaschine at $3.99 against Poseidon Synth's $7.99. Zeitmaschine also leads on device support (3 vs 1). Poseidon Synth's advantage is iOS requirement (12.0 vs 15.0). On update cadence, ads and in-app purchases there is nothing between them.

Poseidon Synth costs $7.99 and Zeitmaschine $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Poseidon Synth ships an update every 4 months, Zeitmaschine every 7 months. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Poseidon Synth | Zeitmaschine |
| --- | --- | --- |
| Price | $7.99 | **$3.99** |
| Rating | **[4.0 (33 ratings)](https://appshunter.io/ios/app/poseidon-synth/id1045058006/reviews)** | — |
| Number of ratings | **33** | — |
| Positive reviews | 58.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | Paid | — |
| Size | 328 MB | 152 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Harry Gohs](https://appshunter.io/developer/382428644) | [Grohe & Giannakakis Applications GbR](https://appshunter.io/developer/1185329512) |

## 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


### Zeitmaschine

[App page](https://appshunter.io/ios/app/zeitmaschine/id1185329513)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Poseidon Synth free?

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

### Is Zeitmaschine free?

Zeitmaschine costs $3.99, with no in-app purchases.

### Do Poseidon Synth or Zeitmaschine have ads?

Neither Poseidon Synth nor Zeitmaschine shows ads.

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

Poseidon Synth ships an update every 4 months, and Zeitmaschine every 7 months. Most recently, Poseidon Synth was updated on October 16, 2026 and Zeitmaschine on October 9, 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.*