# Otus Plus vs SleepisolC

The clearest difference is review sentiment: SleepisolC at 100% against Otus Plus's 40%. Otus Plus's advantage is iOS requirement (11.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Otus Plus ships an update every 3 weeks, SleepisolC every 5 weeks. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Otus Plus | SleepisolC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/otus-plus/id1544386595/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 39.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Free | Free |
| Size | 342 MB | 210 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EDENLUX Corp.](https://appshunter.io/developer/1443712682) | [leesol](https://appshunter.io/developer/1584929445) |

## What reviewers say

### Otus Plus

[App page](https://appshunter.io/ios/app/otus-plus/id1544386595)

This application provides sound effects for various uses. It is a tool for accessing audio elements for creative projects or general purposes.

**Highlights:** Sound effects library, Audio access, Creative project tool

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### SleepisolC

[App page](https://appshunter.io/ios/app/sleepisolc/id6738976438)

This app offers customized sound therapy and versatile modes like sleep, stress relief, and focus. It connects seamlessly with a dedicated device to help users achieve a healthier lifestyle through improved sleep and mental well-being.

**Highlights:** Customizable intensity and time settings, Multiple modes: sleep, stress, healing, focus, Binaural beats sound therapy, Automatic device connection, User-friendly interface

**In-app purchases:** none


## Frequently asked questions

### Is Otus Plus free?

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

### Is SleepisolC free?

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

### Do Otus Plus or SleepisolC have ads?

Neither Otus Plus nor SleepisolC shows ads.

### Which is updated more often, Otus Plus or SleepisolC?

Otus Plus ships an update every 3 weeks, and SleepisolC every 5 weeks. Most recently, Otus Plus was updated on October 14, 2026 and SleepisolC on October 7, 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.*