# RadNow! vs IMemo

The clearest difference is update cadence: RadNow! at every 3 weeks against IMemo's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

RadNow! ships an update every 3 weeks, IMemo every 2 months. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | RadNow! | IMemo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/radnow/id6476801525/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 8 MB | 4 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Borzoi AI株式会社](https://appshunter.io/developer/1766880957) | [yamato homma](https://appshunter.io/developer/1774699233) |

## What reviewers say

### RadNow!

[App page](https://appshunter.io/ios/app/radnow/id6476801525)

This app visualizes real-time radiation levels across Japan using data from over 4900 monitoring posts. It offers an intuitive map interface with color-coded icons and historical data graphs for easy understanding of radiation trends.

**Highlights:** Real-time radiation data visualization, Nationwide monitoring post data, Interactive map interface, Color-coded radiation level icons, Historical data graphs, Daily automatic updates

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

**In-app purchases:** none


### IMemo

[App page](https://appshunter.io/ios/app/imemo/id6737122392)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RadNow! free?

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

### Is IMemo free?

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

### Do RadNow! or IMemo have ads?

Neither RadNow! nor IMemo shows ads.

### Which is updated more often, RadNow! or IMemo?

RadNow! ships an update every 3 weeks, and IMemo every 2 months. Most recently, RadNow! was updated on October 12, 2026 and IMemo 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.*