# PlanetWeight vs Kaira

The clearest difference is in-app purchases: PlanetWeight at none against Kaira's 2. PlanetWeight also leads on iOS requirement (14.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Kaira sells 2 in-app purchases, starting at $4.99 per month. PlanetWeight asks for nothing beyond the download.

## The numbers

| Metric | PlanetWeight | Kaira |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Size | 6 MB | 3 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Berkan Gunduz](https://appshunter.io/developer/1235310112) | [Spartak Kagramanyan](https://appshunter.io/developer/1891936181) |

## What reviewers say

### PlanetWeight

[App page](https://appshunter.io/ios/app/planetweight/id6471647030)

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

**In-app purchases:** none


### Kaira

[App page](https://appshunter.io/ios/app/kaira-math/id6761885184)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kaira: Math Premium | $4.99 | per month |
| Kaira: Math Premium | $29.99 | per year |


## Frequently asked questions

### Is PlanetWeight free?

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

### Is Kaira free?

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

### Do PlanetWeight or Kaira have ads?

Neither PlanetWeight nor Kaira shows ads.

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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.*