# OffDays Alarm vs Namu Calculator

The clearest difference is ads: Namu Calculator at none against OffDays Alarm's shown. Namu Calculator also leads on iOS requirement (17.6 vs 26.0). On price, 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.

## The numbers

| Metric | OffDays Alarm | Namu Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | — |
| Size | 15 MB | 4 MB |
| Requires iOS | 26.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sung Ahn Kim](https://appshunter.io/developer/1452083763) | [KangMin Kim](https://appshunter.io/developer/6804554339) |

## What reviewers say

### OffDays Alarm

[App page](https://appshunter.io/ios/app/offdays-alarm/id6762003987)

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

**In-app purchases:** none


### Namu Calculator

[App page](https://appshunter.io/ios/app/namu-calculator/id6808934962)

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

**In-app purchases:** none


## Frequently asked questions

### Is OffDays Alarm free?

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

### Is Namu Calculator free?

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

### Do OffDays Alarm or Namu Calculator have ads?

OffDays Alarm shows ads; Namu Calculator does not.

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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.*