# LH Rubbing vs Poseidon Synth

The clearest difference is price: LH Rubbing at Free against Poseidon Synth's $7.99. LH Rubbing also leads on review sentiment (77% vs 59%) and rating (4.2 vs 4.0). Poseidon Synth's advantage is update cadence (every 4 months vs every 26 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

LH Rubbing is free to download; Poseidon Synth costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LH Rubbing holds the better App Store score, 4.2 against 4.0. Both are backed by a comparable volume of ratings — 19 and 33 respectively. Written reviews point the same way: 77% of LH Rubbing's written reviews are positive against 59% of Poseidon Synth's.

LH Rubbing ships an update every 26 months, Poseidon Synth every 4 months. The most recent releases landed on June 6, 2026 and August 4, 2026 respectively.

## The numbers

| Metric | LH Rubbing | Poseidon Synth |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | **[4.2 (19 ratings)](https://appshunter.io/ios/app/lh-rubbing/id652348001/reviews)** | [4.0 (33 ratings)](https://appshunter.io/ios/app/poseidon-synth/id1045058006/reviews) |
| Number of ratings | 19 | **33** |
| Positive reviews | **76.9% of reviews** | 58.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 4 months** |
| Monetization | **Free** | Paid |
| Size | 12 MB | 328 MB |
| Requires iOS | **9.3** | 12.0 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [昊 刘](https://appshunter.io/developer/652348004) | [Harry Gohs](https://appshunter.io/developer/382428644) |

## What reviewers say

### LH Rubbing

[App page](https://appshunter.io/ios/app/lh-rubbing/id652348001)

This virtual analog synthesizer app for iPad offers a rich, analog sound. It features multiple oscillators, filters, and LFOs for extensive sound shaping. Control pitch, cutoff, and resonance with an ADSR envelope and add vibrato with keyboard interaction.

**Highlights:** Polyphony synthesizer, Three wave oscillators, One noise oscillator, Two LFOs, Three type embedded filter, ADSR envelope generator, Keyboard vibrato control

**Features:** macOS Compatibility

**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 LH Rubbing free?

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

### Is Poseidon Synth free?

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

### Which has better reviews, LH Rubbing or Poseidon Synth?

LH Rubbing is rated higher. LH Rubbing averages 4.2 out of 5 from 19 ratings, while Poseidon Synth averages 4.0 from 33 ratings.

### Do LH Rubbing or Poseidon Synth have ads?

Neither LH Rubbing nor Poseidon Synth shows ads.

### Which is updated more often, LH Rubbing or Poseidon Synth?

LH Rubbing ships an update every 26 months, and Poseidon Synth every 4 months. Most recently, LH Rubbing was updated on June 6, 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.*