Comparison

Otus Plus vs SleepisolBio

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Otus Plus

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
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Otus Plus application “Sound effects obtained from https://www.zapsplat.com“

About

SleepisolBio

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Get Personalized Sleep Management for Free! Enjoy a comprehensive suite of sleep management features, absolutely free and without any restrictions. Completely Free, No Limits! Access all content without ads, subscriptions, or paywalls. • Sleep Therapy: 48 Sound Therapy tracks (12 each for Sleep, Focus, Healing, and Stress Relief) • Mindfulness Content: - 6 Sound Therapy Tracks - Brain Wave Therapy: 16 Theta waves, 24 Alpha waves, 24 Beta waves, 32 Gamma waves All MP3 audio files in the Sleepisol Bio app are produced in high-quality 320kbps, 48kHz stereo. • Bedtime Stories: 6 classic tales - Snow White and the Seven Dwarfs - Hansel and Gretel - The Three Little Pigs - Jack and the Beanstalk - Cinderella - The Swan Princes • Real-time Generated Sound-based Therapy: - Monaural beats - Binaural beats - Isochronic tones Your Sleep Data, Front and Center We prioritize displaying the information you need, not intrusive ads or subscription prompts. Sleepisol Bio places your sleep analysis data prominently at the top of the home screen. The Ultimate Personalized Sleep Management System Sleep health is important not just when you’re asleep, but also throughout your entire day. Our app analyzes your sleep tracking data to automatically recommend the most suitable therapy features based on your individual circadian rhythm. With just a few taps, you can access personalized sleep management tools tailored to your unique needs. Personalized Therapy via Real-time Biofeedback Sleepisol Bio analyzes your real-time heart rate data to provide the most effective personalized therapy. Wake Up to a Happier Morning with Our Diverse Alarm Selection A smooth morning wake-up is crucial for overall sleep health. Sleepisol Bio offers a wide range of alarm options, including special alarms for holidays and birthdays. • 30 General Alarms • 18 Brain Wave Alarms (to gently stimulate your mind) • 10 Christmas Alarms • 10 New Year's Alarms • 10 Birthday Alarms Gentle Brain Activation with Engaging Missions Sleepisol Bio offers three wake-up missions to gently ease you into your day. These light hand and brain warm-up exercises help you naturally transition from sleep to wakefulness. • Hand Motion Wake-up: wake up with simple hand motion recognition. • Math Wake-up: wake up with simple calculations. • Sleep Info Wake-up: wake up with quizes that present your own sleep information. Sleepisol Bio strives to be your personal sleep expert. • For enhanced features, the app is compatible with the Apple Watch and Leesol's Sleepisol Device. • Sleepisol Bio is not intended for medical use. • Sleepisol Bio stores and processes all data locally on your device.

Screenshots

Otus Plus4 screens
SleepisolBio4 screens

Verdict

The call

The clearest difference is update cadence: SleepisolBio at every 10 days against Otus Plus's every 3 weeks. Otus Plus's advantage is iOS requirement (11.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Otus Plus ships an update every 3 weeks, SleepisolBio every 10 days. The most recent releases landed on October 5, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level
Otus Plus versus SleepisolBio: the parameters behind the verdict, then further details
ParameterOtus PlusSleepisolBio
PriceFreeFree
Rating2.3 (3 ratings) — better—
Positive reviews39.7% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 weeksEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPod, Apple Watch
Requires iOS11.0 — better15.6
Further details — not scored
Size342 MB1.1 GB
Age rating4+4+
DeveloperEDENLUX Corp.leesol

In-app purchases

None

Otus Plus

No in-app purchases

None

SleepisolBio

No in-app purchases

Questions

Is Otus Plus free?
Otus Plus is free to download, with no in-app purchases.
Is SleepisolBio free?
SleepisolBio is free to download, with no in-app purchases.
Do Otus Plus or SleepisolBio have ads?
Neither Otus Plus nor SleepisolBio shows ads.
Which is updated more often, Otus Plus or SleepisolBio?
Otus Plus ships an update every 3 weeks, and SleepisolBio every 10 days. Most recently, Otus Plus was updated on October 5, 2026 and SleepisolBio on October 11, 2026.

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