# Grade 3 Prep vs Kaira

The clearest difference is update cadence: Kaira at every 10 days against Grade 3 Prep's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Grade 3 Prep sells 3 in-app purchases, starting at $3.99 per month and Kaira sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Grade 3 Prep ships an update every 3 months, Kaira every 10 days. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Grade 3 Prep | Kaira |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Size | 8 MB | 3 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Eager.app](https://appshunter.io/developer/1550371160) | [Spartak Kagramanyan](https://appshunter.io/developer/1891936181) |

## What reviewers say

### Grade 3 Prep

[App page](https://appshunter.io/ios/app/grade-3-prep-math-and-reading/id6759871441)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $3.99 | per month |
| Annual Premium | $29.99 | per year |
| Lifetime Premium | $59.99 | one-time |


### 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 Grade 3 Prep free?

Grade 3 Prep is free to download, with in-app purchases available.

### Is Kaira free?

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

### Do Grade 3 Prep or Kaira have ads?

Neither Grade 3 Prep nor Kaira shows ads.

### Which is updated more often, Grade 3 Prep or Kaira?

Grade 3 Prep ships an update every 3 months, and Kaira every 10 days. Most recently, Grade 3 Prep was updated on October 3, 2026 and Kaira on October 10, 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.*