# RAYSID vs Periphery

The clearest difference is in-app purchases: RAYSID at none against Periphery's 4. RAYSID also leads on ads (none vs shown) and update cadence (weekly vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Periphery sells 4 in-app purchases, starting at $6.99 per 7 days. RAYSID asks for nothing beyond the download.

RAYSID ships an update weekly, Periphery every 3 weeks. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | RAYSID | Periphery |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/raysid/id6763330523/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free | — |
| Size | 145 MB | 5 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Isai Olvera](https://appshunter.io/developer/1895267343) | [Grima Hdez](https://appshunter.io/developer/1741481582) |

## What reviewers say

### 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


### Periphery

[App page](https://appshunter.io/ios/app/periphery-bluetooth-scanner/id6785811488)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Periphery Pro Weekly | $6.99 | per 7 days |
| Periphery Pro Monthly | $14.99 | per month |
| Periphery Pro Yearly | $39.99 | per year |
| Periphery Pro Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is RAYSID free?

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

### Is Periphery free?

Periphery is free to download, with in-app purchases available.

### Do RAYSID or Periphery have ads?

Periphery shows ads; RAYSID does not.

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

RAYSID ships an update weekly, and Periphery every 3 weeks. Most recently, RAYSID was updated on October 6, 2026 and Periphery on October 7, 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.*