# Third Grade Math Trainer vs Kasa

The clearest difference is price: Kasa at Free against Third Grade Math Trainer's $2.99. Kasa also leads on update cadence (every 3 weeks vs every 26 months). Third Grade Math Trainer's advantage is in-app purchases (none vs 5) and iOS requirement (12.0 vs 15.0). On ads and device support there is nothing between them.

Kasa is free to download; Third Grade Math Trainer costs $2.99 up front. Kasa sells 5 in-app purchases, starting at $2.79 per month. Third Grade Math Trainer asks for nothing beyond the download.

Third Grade Math Trainer ships an update every 26 months, Kasa every 3 weeks. The most recent releases landed on September 28, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Third Grade Math Trainer | Kasa |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[5.0 (9 ratings)](https://appshunter.io/ios/app/kasa-spanish-immersion-ai/id6470425150/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 19 MB | 222 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sergey Malugin](https://appshunter.io/developer/562782409) | [Collin Nelson](https://appshunter.io/developer/1686507728) |

## What reviewers say

### Third Grade Math Trainer

[App page](https://appshunter.io/ios/app/third-grade-math-trainer/id1312646293)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kasa

[App page](https://appshunter.io/ios/app/kasa-spanish-immersion-ai/id6470425150)

Master new languages with AI-powered conversations and science-backed learning techniques. Practice real-life scenarios, track your fluency, and retain vocabulary effectively. Offers bite-sized lessons for convenient learning on the go.

**Highlights:** Real-time AI conversations, CEFR fluency tests, Situational role-plays, Spaced-repetition reviews, Frequency-based curriculum, Bite-size lessons

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kasa Plus | $2.79 | per month |
| Kasa Plus | $9.99 | per month |
| Kasa Plus | $14.99 | per month |
| Kasa Plus | $64.99 | per 6 months |
| Kasa Plus | $89.99 | per year |


## Frequently asked questions

### Is Third Grade Math Trainer free?

Third Grade Math Trainer costs $2.99, with no in-app purchases.

### Is Kasa free?

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

### Do Third Grade Math Trainer or Kasa have ads?

Neither Third Grade Math Trainer nor Kasa shows ads.

### Which is updated more often, Third Grade Math Trainer or Kasa?

Third Grade Math Trainer ships an update every 26 months, and Kasa every 3 weeks. Most recently, Third Grade Math Trainer was updated on September 28, 2026 and Kasa on October 20, 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.*