ZenoWell vs RAYSID
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZenoWell
This wellness app focuses on vagus nerve stimulation to improve sleep, relaxation, meditation, and overall well-being. It integrates with health data to provide clearer trends and offers guided breathing exercises. The app is designed for general fitness and self-management, not medical purposes.
- Vagus nerve stimulation for well-being
- Guided breathing exercises
- Sleep, relaxation, and meditation modes
- Headache relief mode
- Health data integration (HR, HRV, Sleep Score)
- Focus and digestion enhancement modes
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ZenoLabs is a wellness application designed to support everyday relaxation and well-being. When paired with our earbud, it helps you build simple daily habits and feel more balanced throughout the day. ZenoLabs is a reflection companion for everyday journaling and self-awareness. Chat with us by text or voice. ZenoLabs helps you sort through your thoughts, reflect on your day, and explore ideas for your own lifestyle. With your permission, ZenoLabs reads and displays your personal data from Apple Health. ZenoLabs presents your own data as periodic summaries. It does not interpret, diagnose, or provide any medical commentary on this data. Breathing guidance: enjoy a smoother flow every time Multiple modes support breathing guidance. Follow the pace to practice breathing alongside gentle sound and vibration for a smoother, more consistent experience, and to get into the flow more easily. Ideal for winding down before sleep, deepening relaxation, and supporting concentration. Feedback & Support: reach us directly Feedback and Contact Us are available now. Whether it's device pairing, choosing a mode, your experience, or feature suggestions, just reach us anytime. Disclaimer ZenoLabs is an application for general wellness purposes only. This app and its paired earbud are consumer audio and electronic devices, not medical devices. They are not intended to diagnose, treat, cure, mitigate, or prevent any disease or medical condition. All data displayed in this app is sourced from your own personal devices (such as Apple Health or paired wearables) and is presented for your personal reference only. ZenoLabs does not interpret, analyze, or provide any medical commentary, diagnosis, or treatment recommendations based on this data. This app is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your doctor or other qualified healthcare professional with any questions you may have regarding a medical condition. Do not disregard, avoid, or delay obtaining medical advice from a qualified healthcare professional because of information you have seen in this app. If you think you may have a medical emergency, call your doctor or local emergency services immediately.
RAYSID
This app connects to a RAYSID gamma spectrometer via Bluetooth to display real-time radiation data. It offers detailed spectrum analysis, automatic isotope identification, and customizable device alarms. Data is stored locally on your phone.
- Real-time count rate and dose rate
- Automatic isotope identification
- High-resolution spectrum analysis
- Device threshold alarms with notifications
- Export spectrum data to N42 file
- Phone-side Geiger clicks
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Raysid is the iOS companion app for the RAYSID CsI(Tl) gamma spectrometer. Connect to your RAYSID over Bluetooth and see radiation in real time: • Live count rate (CPS) and dose rate (µSv/h) • Accumulated dose and yearly projection • 33-bin coarse histogram for quick scanning • 1800-channel high-resolution spectrum with log or linear axis • Automatic isotope identification against a built-in library of 43 reference spectra (natural, medical, and industrial isotopes) • Device threshold alarms with phone notifications, sound, and haptic • Phone-side Geiger clicks through the speaker, AirPods, or car audio • Export the high-resolution spectrum as a standards-compliant N42 file • Local radiation map: record your readings geotagged to where you took them, view them by count rate or dose, with an optional community layer. Recorded only while the app is open; your map stays on your device. You'll need a RAYSID device to use this app. Your measurements, location, and recorded map stay on your phone - nothing is uploaded. This app is an independent companion and is not affiliated with the RAYSID device manufacturer.
Screenshots
Verdict
The clearest difference is update cadence: RAYSID at weekly against ZenoWell's fortnightly. ZenoWell's advantage is ratings volume (4 vs 1). On price, rating, ads 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.
On the App Store both sit at effectively the same score — 5.0 for ZenoWell against 5.0 for RAYSID. Both are backed by a comparable volume of ratings — 4 and 1 respectively.
ZenoWell ships an update fortnightly, RAYSID weekly. Both last shipped on October 6, 2026.
| Parameter | ZenoWell | RAYSID |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) | 5.0 (1 ratings) |
| Number of ratings | 4 — better | 1 |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 128 MB | 145 MB |
| Age rating | 4+ | 4+ |
| Developer | ZENOLABS PTE. LTD. | Isai Olvera |
Customer experience
ZenoWell
RAYSID
In-app purchases
ZenoWell
No in-app purchases
RAYSID
No in-app purchases








