# RADsync vs Smart Sauna

RADsync and Smart Sauna are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RADsync ships an update every 5 months, Smart Sauna every 7 months. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | RADsync | Smart Sauna |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/radsync/id1568500244/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Free | — |
| Size | 46 MB | 3 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [innoRIID GmbH](https://appshunter.io/developer/1568500246) | [Vetle Norman](https://appshunter.io/developer/1878650827) |

## What reviewers say

### RADsync

[App page](https://appshunter.io/ios/app/radsync/id1568500244)

Connect your radiation isotope identification instruments to your iOS device. Store, annotate, and share collected measurements and reports via email. Requires a compatible RADEAGLE device.

**Highlights:** Bluetooth and Network connectivity, Data repository for measurements, Annotate measurements and reports, Email sharing of data, Supports multiple RADEAGLE instruments

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart Sauna

[App page](https://appshunter.io/ios/app/smart-sauna/id6759448287)

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

**In-app purchases:** none


## Frequently asked questions

### Is RADsync free?

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

### Is Smart Sauna free?

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

### Do RADsync or Smart Sauna have ads?

Neither RADsync nor Smart Sauna shows ads.

### Which is updated more often, RADsync or Smart Sauna?

RADsync ships an update every 5 months, and Smart Sauna every 7 months. Most recently, RADsync was updated on October 1, 2026 and Smart Sauna on October 9, 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.*