Otus Plus vs Sleepisol+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Otus Plus
This application provides sound effects for various uses. It is a tool for accessing audio elements for creative projects or general purposes.
- Sound effects library
- Audio access
- Creative project tool
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Otus Plus application “Sound effects obtained from https://www.zapsplat.com“
Sleepisol+
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***Guidance on how to use healthy brain "sleepisol" sleepisol+ was developed for your healthy brain and to promote better life of the users. Experience better sleep and relived stress. sleepisol+ also helps your concentration and peach of mind. - Personalized use mode sleepisol+ provides cutting edge technology that delivers healthier sleeping experience. Dedicated application for mobile devices provide personal, convenient and structured services modes. - Select from 4 modes(sleep, stress, focus and relax), Place CES sensors on the temple area and turn the power on. The dedicated app guide you through easy steps to use the device, the app keeps use records automatically. It is recommended that the device should be used 30 minutes every morning and evening for at lease 30 minutes per use. - sleepisol+ can be purchased through Leesol homepage and online shopping mall. If you have any questions about the product, please call customer service center at 02-318-8890. Leesol website : http://leesolbrain.com
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Otus Plus | Sleepisol+ |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (3 ratings) — better | — |
| Positive reviews | 39.7% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 342 MB | 187 MB |
| Age rating | 4+ | 4+ |
| Developer | EDENLUX Corp. | leesol |
In-app purchases
Otus Plus
No in-app purchases
Sleepisol+
No in-app purchases
