# Usagi Calc vs Hapi

The clearest difference is in-app purchases: Usagi Calc at none against Hapi's 3. Usagi Calc also leads on iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Hapi sells 3 in-app purchases, starting at $1.99 per month. Usagi Calc asks for nothing beyond the download.

## The numbers

| Metric | Usagi Calc | Hapi |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 21 MB | 17 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takashi Kuwahara](https://appshunter.io/developer/1877604508) | [LedaPremium](https://appshunter.io/developer/1896533700) |

## What reviewers say

### Usagi Calc

[App page](https://appshunter.io/ios/app/usagi-calc/id6764348021)

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

**In-app purchases:** none


### Hapi

[App page](https://appshunter.io/ios/app/hapi-funny-calculator/id6781326759)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HaPi Premium Monthly | $1.99 | per month |
| HaPi Premium Yearly | $9.99 | per year |
| HaPi Premium | $19.99 | one-time |


## Frequently asked questions

### Is Usagi Calc free?

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

### Is Hapi free?

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

### Do Usagi Calc or Hapi have ads?

Neither Usagi Calc nor Hapi shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*