# Hapi vs PlantCalculator

The clearest difference is in-app purchases: PlantCalculator at none against Hapi's 3. PlantCalculator also leads on iOS requirement (13.0 vs 15.0). Hapi's advantage is ads (none vs shown). On price, update cadence 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. PlantCalculator asks for nothing beyond the download.

Hapi ships an update every 2 weeks, PlantCalculator every 9 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | Hapi | PlantCalculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Size | 17 MB | 25 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LedaPremium](https://appshunter.io/developer/1896533700) | [Ryo Iida](https://appshunter.io/developer/1852269856) |

## What reviewers say

### 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 |


### PlantCalculator

[App page](https://appshunter.io/ios/app/plantcalculator/id6782103531)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hapi free?

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

### Is PlantCalculator free?

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

### Do Hapi or PlantCalculator have ads?

PlantCalculator shows ads; Hapi does not.

### Which is updated more often, Hapi or PlantCalculator?

Hapi ships an update every 2 weeks, and PlantCalculator every 9 days. Most recently, Hapi was updated on November 5, 2026 and PlantCalculator on November 5, 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.*