# Radiacode vs ODAlarm

The clearest difference is in-app purchases: Radiacode at none against ODAlarm's 1. Radiacode also leads on device support (3 vs 1). ODAlarm's advantage is update cadence (every 4 days vs every 2 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. ODAlarm sells 1 one-off in-app purchase. Radiacode asks for nothing beyond the download.

Radiacode ships an update every 2 months, ODAlarm every 4 days. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Radiacode | ODAlarm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (93 ratings)](https://appshunter.io/ios/app/radiacode/id6449358533/reviews)** | — |
| Number of ratings | **93** | — |
| Positive reviews | 63.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 49 MB | 2 MB |
| Requires iOS | **17.0** | 17.2 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Radiacode Ltd](https://appshunter.io/developer/1688704418) | [Yoshikazu Mikawa](https://appshunter.io/developer/1778069380) |

## What reviewers say

### Radiacode

[App page](https://appshunter.io/ios/app/radiacode/id6449358533)

This application enhances a radiation monitoring device, offering real-time data analysis, interactive dashboards, and advanced search functions. It visualizes isotopes, detects food contamination, and maps radiation levels geographically, providing detailed insights into radiation environments.

**Highlights:** Interactive real-time dashboard, Advanced ionizing radiation search, Alarms for radiation limits, Isotope visualization and spectrometry, Food contamination detection (Cesium-137), Radiological mapping on Google Maps

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Great app and device
- 👍 Easy to use and intuitive
- 🚀 Constantly being developed
- 👍 Fun to explore radiation
- 👍 Great value for hobbyist

**What reviewers complain about**

- 🐛 App keeps crashing
- 🐛 App crashes immediately
- 🐛 App won't open
- 🐛 App crashes constantly
- 🐛 Features flat out don't work

**Reported bugs**

- App keeps crashing
- App crashes immediately upon opening
- App won't open on iPhone 15 Pro
- App crashes constantly
- Features don't work

**Requested features**

- Scale data on map view
- Plot data along exponential curve
- See nuances in data less binary
- Clicks play through headphones
- Tone frequency proportional to energy


### ODAlarm

[App page](https://appshunter.io/ios/app/odalarm/id6504723944)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ODAlarm Premium Access | $0.99 | one-time |


## Frequently asked questions

### Is Radiacode free?

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

### Is ODAlarm free?

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

### Do Radiacode or ODAlarm have ads?

Neither Radiacode nor ODAlarm shows ads.

### Which is updated more often, Radiacode or ODAlarm?

Radiacode ships an update every 2 months, and ODAlarm every 4 days. Most recently, Radiacode was updated on October 9, 2026 and ODAlarm 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.*