SOLTEC vs Centropix
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.
Centropix
This app enhances your self-care routine by controlling wireless wellness devices. It offers five distinct programs with adjustable intensities for relaxation, balance, energy, synchronization, and transformation.
- Control KLOUD and BUBBLE devices
- Five revolutionary programs
- Adjustable intensity levels
- Wireless PEMA applicators
- Frequency wearable integration
- Uncomplicated wellness experience
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Wellness to go! The Centropix APP unfolds full capacity for the products KLOUD and BUBBLE. More functionality and mobility are guaranteed for uncomplicated wellness experience. The world’s first wireless, App-Driven PEMA applicators and Frequency wearable are taking you to a whole new level of selfcare. Control multiple KLOUDs with this APP and choose between five revolutionary programs and intensities, adapted to diverse needs: RELAXER – Relaxation of body, mind and soul. BALANCER – Restore your natural balance and get into a good flow. ENERGIZER – A boos when you want more life energy! SYNCHRONIZER – Synchronize your body functions. TRANSFORMER – Help your body help itself.
Screenshots
Verdict
The clearest difference is rating: SOLTEC at 4.2 against Centropix's 3.6. SOLTEC also leads on review sentiment (50% vs 40%). Centropix's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SOLTEC holds the better App Store score, 4.2 against 3.6. Both are backed by a comparable volume of ratings — 6 and 22 respectively. Written reviews point the same way: 50% of SOLTEC's written reviews are positive against 40% of Centropix's.
SOLTEC ships an update every 2 weeks, Centropix every 3 weeks. The most recent releases landed on October 9, 2026 and September 27, 2026 respectively.
| Parameter | SOLTEC | Centropix |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (6 ratings) — better | 3.6 (22 ratings) |
| Positive reviews | 50.0% of reviews — better | 40.0% of reviews |
| Number of ratings | 6 | 22 — better |
| Update frequency | Every 2 weeks — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 256 MB |
| Age rating | 4+ | 4+ |
| Developer | Round River Research Corporation | Centropix USA LLc |
Customer experience
SOLTEC
Centropix
In-app purchases
SOLTEC
No in-app purchases
Centropix
No in-app purchases
