# StarHi vs RAYSID

The clearest difference is update cadence: StarHi at daily against RAYSID's weekly. StarHi also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price, 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.

StarHi ships an update daily, RAYSID weekly. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | StarHi | RAYSID |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/raysid/id6763330523/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Weekly |
| Monetization | — | Free |
| Size | 205 MB | 145 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [聪 孙](https://appshunter.io/developer/1752433762) | [Isai Olvera](https://appshunter.io/developer/1895267343) |

## What reviewers say

### StarHi

[App page](https://appshunter.io/ios/app/starhi/id6504804274)

**Features:** macOS Compatibility

**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 StarHi free?

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

### Is RAYSID free?

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

### Do StarHi or RAYSID have ads?

Neither StarHi nor RAYSID shows ads.

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

StarHi ships an update daily, and RAYSID weekly. Most recently, StarHi was updated on October 2, 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.*