SOLTEC vs KAATSU Connect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SOLTEC
This app analyzes your sleep cycles to help you regain Delta sleep and improve overall sleep quality. It also offers relaxation sessions for stress relief during the day. Track your progress and observe improvements with system use.
- Sleep cycle analysis
- Delta sleep improvement
- Z•TRACK™ Analyst
- Relaxation sessions
- Stress relief
- Progress tracking
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SOLTEC•Z™ provides an in-depth view of the SOLTEC•HEALTH™ System that works while you sleep to support your natural sleep cycles. Regain Delta sleep, the most important stage of sleep. Evaluate the quality of your sleep with the Z•TRACK™ Analyst and observe improvement in sleep provided by system use. Use during your day for relief from stress by running a Relaxation Session, provided in the Relax section of the app. It's easy to use and can be run while working, gaming, reading or watching TV. Naturally, the best results will come from a session devoted to pure relaxation. Others have found that running relaxation sessions during the day leads to more favorable results in overall sleep scores. You can track your own progress with this app.
KAATSU Connect
This app connects to specialized Bluetooth-enabled bands to help users improve fitness, speed up recovery, or aid in rehabilitation. It allows for setting target pressure levels for a personalized blood flow restriction training experience.
- Connects to KAATSU Bluetooth bands
- Set target pressure levels
- Blood Flow Restriction (BFR) training
- Fitness improvement
- Recovery acceleration
- Rehabilitation support
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KAATSU pioneered BFR (Blood Flow Restriction) and is the only brand to offer unparalleled performance and safety for users. Whether your goal is to improve your fitness, significantly reduce your recovery time, or rehabilitate from injury, KAATSU can help you. This app requires KAATSU Bluetooth-enabled bands. Using this app you can connect to the KAATSU bands, set the target pressure, and go. The KAATSU app connects to KAATSU equipment which is designed for fitness and wellness purposes only. KAATSU equipment is NOT a medical device and does NOT have, nor require, regulatory clearance in ANY jurisdiction worldwide as it is exclusively for fitness and wellness use, not medical purposes. The KAATSU system is not designed or intended to diagnose, treat, cure, or prevent any disease or medical condition. Users should consult with a qualified healthcare professional before using KAATSU, especially if they have any preexisting medical conditions or concerns. The information provided within the app is not a substitute for professional medical advice, diagnosis, or treatment. Always check with your doctor in addition to using this app and before making any medical decisions.
Screenshots
Verdict
The clearest difference is rating: KAATSU Connect at 4.7 against SOLTEC's 3.9. KAATSU Connect also leads on ads (none vs shown) and monetization model (free vs ad-supported). SOLTEC's advantage is update cadence (every 2 weeks vs every 6 weeks). On price, review sentiment, ratings volume and in-app purchases 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.
KAATSU Connect holds the better App Store score, 4.7 against 3.9. Both are backed by a comparable volume of ratings — 8 and 13 respectively. Written reviews split almost evenly too, at 50% and 50% positive.
SOLTEC ships an update every 2 weeks, KAATSU Connect every 6 weeks. The most recent releases landed on October 24, 2026 and October 5, 2026 respectively.
| Parameter | SOLTEC | KAATSU Connect |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (8 ratings) | 4.7 (13 ratings) — better |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| Number of ratings | 8 | 13 — better |
| Update frequency | Every 2 weeks — better | Every 6 weeks |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 12.4 — better |
| Further details — not scored | ||
| Size | 38 MB | 17 MB |
| Age rating | 4+ | 17+ |
| Developer | Round River Research Corporation | KAATSU Global, Inc. |
Customer experience
SOLTEC
KAATSU Connect
In-app purchases
SOLTEC
No in-app purchases
KAATSU Connect
No in-app purchases








