# Sofia Kovalevskaya vs Modal Math

The clearest difference is price: Modal Math at Free against Sofia Kovalevskaya's $1.99. Modal Math also leads on update cadence (every 5 weeks vs every 26 months). Sofia Kovalevskaya's advantage is in-app purchases (none vs 2). On ads, device support and iOS requirement there is nothing between them.

Modal Math is free to download; Sofia Kovalevskaya costs $1.99 up front. Modal Math sells 2 in-app purchases, starting at $24.99 per month. Sofia Kovalevskaya asks for nothing beyond the download.

Sofia Kovalevskaya ships an update every 26 months, Modal Math every 5 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sofia Kovalevskaya | Modal Math |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/modal-math/id6469200381/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 30 MB | 75 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPad, Mac, Apple TV | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Asledu LLC](https://appshunter.io/developer/1711677950) |

## What reviewers say

### Sofia Kovalevskaya

[App page](https://appshunter.io/ios/app/sofia-kovalevskaya/id1447980726)

**Features:** Vision Pro support

**In-app purchases:** none


### Modal Math

[App page](https://appshunter.io/ios/app/modal-math/id6469200381)

This app provides accessible math practice designed by teachers for students with special language needs. It focuses on fostering conceptual understanding and reinforcing mathematical language for diverse learners.

**Highlights:** Designed by teachers, Accessible for special language needs, Fosters conceptual understanding, Reinforces mathematical language, Supports diverse learning needs

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Classroom Membership | $24.99 | per month |
| DHH Teacher Resources | $6.99 | one-time |


## Frequently asked questions

### Is Sofia Kovalevskaya free?

Sofia Kovalevskaya costs $1.99, with no in-app purchases.

### Is Modal Math free?

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

### Do Sofia Kovalevskaya or Modal Math have ads?

Neither Sofia Kovalevskaya nor Modal Math shows ads.

### Which is updated more often, Sofia Kovalevskaya or Modal Math?

Sofia Kovalevskaya ships an update every 26 months, and Modal Math every 5 weeks. Most recently, Sofia Kovalevskaya was updated on October 20, 2026 and Modal Math on October 24, 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.*