# Modal Math vs SignChat

The clearest difference is ads: Modal Math at none against SignChat's shown. Modal Math also leads on iOS requirement (15.1 vs 18.2). SignChat's advantage is update cadence (weekly vs every 5 weeks). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Modal Math sells 2 in-app purchases, starting at $24.99 per month and SignChat sells 1 in-app purchase, starting at $139.99 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Modal Math against 5.0 for SignChat. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Modal Math ships an update every 5 weeks, SignChat weekly. The most recent releases landed on June 24, 2026 and June 22, 2026 respectively.

## The numbers

| Metric | Modal Math | SignChat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/modal-math/id6469200381/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/signchat/id6749210385/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 75 MB | 79 MB |
| Requires iOS | **15.1** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Asledu LLC](https://appshunter.io/developer/1711677950) | [James Barba](https://appshunter.io/developer/1829303526) |

## What reviewers say

### 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 |


### SignChat

[App page](https://appshunter.io/ios/app/signchat/id6749210385)

Learn sign language through interactive lessons and visual aids. This app offers a fun and accessible way for children and families to acquire new communication skills. Unlock advanced features and track progress with a premium subscription.

**Highlights:** Step-by-step lessons, Visual flashcards, Multilingual support, Progress tracking, Emotion analysis, Exclusive content

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Premium | $139.99 | per year |


## Frequently asked questions

### Is Modal Math free?

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

### Is SignChat free?

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

### Which has better reviews, Modal Math or SignChat?

Modal Math and SignChat are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Modal Math or SignChat have ads?

SignChat shows ads; Modal Math does not.

### Which is updated more often, Modal Math or SignChat?

Modal Math ships an update every 5 weeks, and SignChat weekly. Most recently, Modal Math was updated on June 24, 2026 and SignChat on June 22, 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.*