# Otus Plus vs Sleepisol+

Otus Plus and Sleepisol+ are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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, Sleepisol+ fortnightly. The most recent releases landed on August 25, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Otus Plus | Sleepisol+ |
| --- | --- | --- |
| 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 | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 342 MB | 187 MB |
| Requires iOS | **11.0** | 12.0 |
| 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


### Sleepisol+

[App page](https://appshunter.io/ios/app/sleepisol-plus/id1640230965)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Otus Plus free?

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

### Is Sleepisol+ free?

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

### Do Otus Plus or Sleepisol+ have ads?

Neither Otus Plus nor Sleepisol+ shows ads.

### Which is updated more often, Otus Plus or Sleepisol+?

Otus Plus ships an update every 3 weeks, and Sleepisol+ fortnightly. Most recently, Otus Plus was updated on August 25, 2026 and Sleepisol+ on September 8, 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.*