# ZenoWell vs RAYSID

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.

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.

## The numbers

| Metric | ZenoWell | RAYSID |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/zenowell/id6754009491/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/raysid/id6763330523/reviews) |
| Number of ratings | **4** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free | Free |
| Size | 128 MB | 145 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ZENOLABS PTE. LTD.](https://appshunter.io/developer/6776498132) | [Isai Olvera](https://appshunter.io/developer/1895267343) |

## What reviewers say

### ZenoWell

[App page](https://appshunter.io/ios/app/zenowell/id6754009491)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### RAYSID

[App page](https://appshunter.io/ios/app/raysid/id6763330523)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ZenoWell free?

ZenoWell is free to download, with no in-app purchases.

### Is RAYSID free?

RAYSID is free to download, with no in-app purchases.

### Which has better reviews, ZenoWell or RAYSID?

ZenoWell and RAYSID are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.

### Do ZenoWell or RAYSID have ads?

Neither ZenoWell nor RAYSID shows ads.

### Which is updated more often, ZenoWell or RAYSID?

ZenoWell ships an update fortnightly, and RAYSID weekly. Most recently, ZenoWell was updated on October 6, 2026 and RAYSID on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*