# sinusedo vs éist

The clearest difference is price: éist at Free against sinusedo's $3.99. éist also leads on update cadence (every 3 days vs weekly). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

éist is free to download; sinusedo costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

sinusedo ships an update weekly, éist every 3 days. The most recent releases landed on September 28, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | sinusedo | éist |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.7 (7 ratings)](https://appshunter.io/ios/app/sinusedo/id6444181090/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | Paid | — |
| Size | 11 MB | 32 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexey Nadzharov](https://appshunter.io/developer/729549192) | [Aidan Reilly](https://appshunter.io/developer/1817285013) |

## What reviewers say

### sinusedo

[App page](https://appshunter.io/ios/app/sinusedo/id6444181090)

This app is a versatile sinewave synthesizer available as a standalone application and AUv3 plugin. It offers two independent keyboards with extensive control over note parameters, polyphony, and modulation, supporting MIDI input for external control.

**Highlights:** Dual independent keyboards, Microtonal tuning, Ring modulator per voice, Adjustable polyphony (up to 144 voices), MIDI input support, Note deviation display (cents), Glide and velocity control

**Features:** Vision Pro support

**In-app purchases:** none


### éist

[App page](https://appshunter.io/ios/app/eist/id6746519137)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is sinusedo free?

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

### Is éist free?

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

### Do sinusedo or éist have ads?

Neither sinusedo nor éist shows ads.

### Which is updated more often, sinusedo or éist?

sinusedo ships an update weekly, and éist every 3 days. Most recently, sinusedo was updated on September 28, 2026 and éist on September 26, 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.*