# 루나캘린더 vs B

The clearest difference is update cadence: B at every 9 days against 루나캘린더's every 3 weeks. 루나캘린더's advantage is iOS requirement (15.1 vs 26.0). 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.

루나캘린더 ships an update every 3 weeks, B every 9 days. The most recent releases landed on November 2, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | 루나캘린더 | B |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Size | 79 MB | 86 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [k-zero](https://appshunter.io/developer/1811048193) | [YunKi Hwang](https://appshunter.io/developer/1772885670) |

## What reviewers say

### 루나캘린더

[App page](https://appshunter.io/ios/app/id6748807635)

**In-app purchases:** none


### B

[App page](https://appshunter.io/ios/app/b-day/id6756418053)

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

**In-app purchases:** none


## Frequently asked questions

### Is 루나캘린더 free?

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

### Is B free?

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

### Do 루나캘린더 or B have ads?

Neither 루나캘린더 nor B shows ads.

### Which is updated more often, 루나캘린더 or B?

루나캘린더 ships an update every 3 weeks, and B every 9 days. Most recently, 루나캘린더 was updated on November 2, 2026 and B on November 9, 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.*