# blukii Radar vs Check

The clearest difference is update cadence: Check at every 3 days against blukii Radar's every 4 months. blukii Radar's advantage is iOS requirement (8.0 vs 15.1). 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.

blukii Radar ships an update every 4 months, Check every 3 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | blukii Radar | Check |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/check-in-tools/id6470861400/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | — | Free |
| Size | 1 MB | 37 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [hard & softWERK GmbH](https://appshunter.io/developer/1492288613) | [Rooted Software](https://appshunter.io/developer/1633939445) |

## What reviewers say

### blukii Radar

[App page](https://appshunter.io/ios/app/blukii-radar/id990248389)

**In-app purchases:** none


### Check

[App page](https://appshunter.io/ios/app/check-in-tools/id6470861400)

This app helps you maintain connections by reminding you to check in with friends, family, or colleagues. You can customize the frequency of these reminders to ensure you stay in touch.

**Highlights:** Customizable check-in reminders, Stay connected with contacts, Personalized reminder frequency, Supports friends, family, and work contacts

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

**In-app purchases:** none


## Frequently asked questions

### Is blukii Radar free?

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

### Is Check free?

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

### Do blukii Radar or Check have ads?

Neither blukii Radar nor Check shows ads.

### Which is updated more often, blukii Radar or Check?

blukii Radar ships an update every 4 months, and Check every 3 days. Most recently, blukii Radar was updated on October 26, 2026 and Check on October 24, 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.*