# Music Notator vs Poseidon Synth

The clearest difference is review sentiment: Poseidon Synth at 59% against Music Notator's 10%. Poseidon Synth also leads on rating (4.0 vs 1.7) and ratings volume (33 vs 7). Music Notator's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 12.0). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Music Notator costs $8.99 and Poseidon Synth $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Poseidon Synth holds the better App Store score, 4.0 against 1.7. Both are backed by a comparable volume of ratings — 7 and 33 respectively. Written reviews point the same way: 10% of Music Notator's written reviews are positive against 59% of Poseidon Synth's.

Music Notator ships an update every 2 months, Poseidon Synth every 4 months. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Music Notator | Poseidon Synth |
| --- | --- | --- |
| Price | $8.99 | **$7.99** |
| Rating | [1.7 (7 ratings)](https://appshunter.io/ios/app/music-notator/id757865024/reviews) | **[4.0 (33 ratings)](https://appshunter.io/ios/app/poseidon-synth/id1045058006/reviews)** |
| Number of ratings | 7 | **33** |
| Positive reviews | 10.3% of reviews | **58.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Paid | Paid |
| Size | 113 MB | 328 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [scorio GmbH](https://appshunter.io/developer/546625110) | [Harry Gohs](https://appshunter.io/developer/382428644) |

## What reviewers say

### Music Notator

[App page](https://appshunter.io/ios/app/music-notator/id757865024)

Create and edit musical scores, including melodies, lead sheets with chords and lyrics, and full arrangements. Access your compositions online and on any device with an internet connection.

**Highlights:** Write melodies, lead sheets, and full scores, Intuitive touch-based note entry and editing, Virtual keyboard for note input, Chord and lyric insertion, Export scores as PDF, 19 score templates, MIDI playback with 128 instruments

**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 Music Notator free?

Music Notator costs $8.99, with no in-app purchases.

### Is Poseidon Synth free?

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

### Which has better reviews, Music Notator or Poseidon Synth?

Poseidon Synth is rated higher. Music Notator averages 1.7 out of 5 from 7 ratings, while Poseidon Synth averages 4.0 from 33 ratings.

### Do Music Notator or Poseidon Synth have ads?

Neither Music Notator nor Poseidon Synth shows ads.

### Which is updated more often, Music Notator or Poseidon Synth?

Music Notator ships an update every 2 months, and Poseidon Synth every 4 months. Most recently, Music Notator was updated on October 22, 2026 and Poseidon Synth on October 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.*