PEGASI Sleep vs iBACK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PEGASI Sleep
This app works with special glasses to help improve sleep quality, reduce the time it takes to fall asleep, and increase deep sleep. It aims to boost daytime energy and productivity while easing jet lag symptoms.
- Improve sleep quality
- Shorten time to fall asleep
- Increase deep sleep
- Wake up naturally
- Increase daytime energy
- Reduce jet lag symptoms
Read full descriptionHide full description
The official app for PEGASI Glasses. Use the app with PEGASI Glasses to solve a series of sleep problems, track the improvement of your sleep quality and bring you the best sleeping experience ever. PEGASI Glasses 1. Improve sleep quality 1.1 Shorten the time of falling asleep 1.2 Increase the amount of deep sleep 1.3 Wake up naturally and easily in the morning 2. Increase energy level and productivity for daytime 3. Reduce the symptoms of jet lag
iBACK
This app helps reduce back pain and strengthen back muscles through short, guided exercises. It uses a posture sensor that vibrates to remind users to maintain proper posture.
- Reduce back pain
- Strengthen back muscles
- 5-minute exercises
- Posture sensor integration
- Vibration reminders for posture
Read full descriptionHide full description
With smart posture corrector “iBACK”: - Reduce pain in your back with simple 5 minute exercises - Strengthen your back muscles at home or in the office How to use "iBACK"? 1. Download the app and turn on the posture sensor 2. Attach the posture sensor to your body 3. For reduced pain in the neck, back, and lower back complete the simple individual exercises (5 minutes) at your desk 4. Strengthen your back muscles: the sensor gives off a vibration to let you know that you need to keep your back straight The medical hardware used by this app is only cleared for use in Russian Federation. Users in other regions should be aware that the hardware is not cleared by local regulatory authorities. Please seek a doctor’s advice in addition to using this app and before making any medical decisions.
Screenshots
Verdict
The clearest difference is review sentiment: iBACK at 71% against PEGASI Sleep's 20%. PEGASI Sleep's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, in-app purchases and monetization model 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
PEGASI Sleep ships an update every 3 weeks, iBACK every 2 months. The most recent releases landed on October 6, 2026 and October 17, 2026 respectively.
| Parameter | PEGASI Sleep | iBACK |
|---|---|---|
| Price | Free | Free |
| Rating | 2.4 (8 ratings) — better | — |
| Positive reviews | 20.0% of reviews | 71.4% of reviews — better |
| Number of ratings | 8 — better | — |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 41 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Qianhai Icecold IT Co., Ltd. | Vladimir Vesnin |
Customer experience
PEGASI Sleep
iBACK
In-app purchases
PEGASI Sleep
No in-app purchases
iBACK
No in-app purchases
