# Radioactivity Conversion vs HamThings PTT

The clearest difference is price: HamThings PTT at Free against Radioactivity Conversion's $2.99. HamThings PTT also leads on update cadence (every 4 days vs every 28 months). Radioactivity Conversion's advantage is in-app purchases (none vs 1) and iOS requirement (13 vs 16.0). On rating, review sentiment, ratings volume and ads there is nothing between them.

HamThings PTT is free to download; Radioactivity Conversion costs $2.99 up front. HamThings PTT sells 1 in-app purchase, starting at $8.99 per year. Radioactivity Conversion asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.0 for Radioactivity Conversion against 3.0 for HamThings PTT. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

Radioactivity Conversion ships an update every 28 months, HamThings PTT every 4 days. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Radioactivity Conversion | HamThings PTT |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/radioactivity-conversion/id561349846/reviews) | [3.0 (1 ratings)](https://appshunter.io/ios/app/hamthings-ptt/id6794328779/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 4 days** |
| Monetization | Paid | **Freemium** |
| Size | 1 MB | 7 MB |
| Requires iOS | **13** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Giacomo De Angelis](https://appshunter.io/developer/6794328781) |

## What reviewers say

### Radioactivity Conversion

[App page](https://appshunter.io/ios/app/radioactivity-conversion/id561349846)

Easily convert between various units related to radioactive decay. Understand the process of emitting radioactive particles and the properties of elements exhibiting radioactivity.

**Highlights:** Radioactive decay unit conversion, Information on radioactive decay process, Details on radioactive particles, Explanation of half-life, Properties of radioactive elements

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

**In-app purchases:** none


### HamThings PTT

[App page](https://appshunter.io/ios/app/hamthings-ptt/id6794328779)

Connect your ham radio to your iPhone for internet-based communication on DMR digital networks and analog SvxLink reflectors. Supports multiple networks and offers real-time push-to-talk, DMR features, and last heard information. Requires a valid amateur radio license.

**Highlights:** Real-time push-to-talk over IP, DMR digital network support, SvxLink analog reflector connectivity, Multi-network compatibility, Real-time Last Heard display, DMR text messaging, Background wake-up for calls

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HamThings PTT (yearly) | $8.99 | per year |


## Frequently asked questions

### Is Radioactivity Conversion free?

Radioactivity Conversion costs $2.99, with no in-app purchases.

### Is HamThings PTT free?

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

### Which has better reviews, Radioactivity Conversion or HamThings PTT?

Radioactivity Conversion and HamThings PTT are both rated 3.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Radioactivity Conversion or HamThings PTT have ads?

Neither Radioactivity Conversion nor HamThings PTT shows ads.

### Which is updated more often, Radioactivity Conversion or HamThings PTT?

Radioactivity Conversion ships an update every 28 months, and HamThings PTT every 4 days. Most recently, Radioactivity Conversion was updated on September 30, 2026 and HamThings PTT on October 6, 2026.

---

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