# USA Events vs RADsync

The clearest difference is ratings volume: USA Events at 3 against RADsync's 1. On price, rating, update cadence and ads 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 USA Events against 5.0 for RADsync. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

USA Events ships an update every 4 months, RADsync every 5 months. The most recent releases landed on October 22, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | USA Events | RADsync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/usa-events/id1405129550/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/radsync/id1568500244/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 75 MB | 46 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Utilities Service Alliance (USA)](https://appshunter.io/developer/1181142870) | [innoRIID GmbH](https://appshunter.io/developer/1568500246) |

## What reviewers say

### USA Events

[App page](https://appshunter.io/ios/app/usa-events/id1405129550)

This app provides essential information for attendees of Utilities Service Alliance Conferences. It serves as a guide to conference schedules, speaker details, networking tools, and presentation materials, enhancing the conference experience.

**Highlights:** Conference schedules, Speaker information, Attendee networking tools, Presentation documents, Surveys

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is USA Events free?

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

### Is RADsync free?

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

### Which has better reviews, USA Events or RADsync?

USA Events and RADsync are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do USA Events or RADsync have ads?

Neither USA Events nor RADsync shows ads.

### Which is updated more often, USA Events or RADsync?

USA Events ships an update every 4 months, and RADsync every 5 months. Most recently, USA Events was updated on October 22, 2026 and RADsync on October 1, 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.*