# InterSign vs Prest Math

The clearest difference is in-app purchases: Prest Math at none against InterSign's 2. InterSign's advantage is device support. On price and iOS requirement there is nothing between them.

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

## The numbers

| Metric | InterSign | Prest Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (176 ratings)](https://appshunter.io/ios/app/intersign-learn-lsm/id1570543920/reviews)** | — |
| Number of ratings | **176** | — |
| Positive reviews | 89.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | — |
| Size | 143 MB | 56 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [Intersign Apps, S.A. de C.V.](https://appshunter.io/developer/1567139339) | [Alfredo Bayuelo](https://appshunter.io/developer/1736398114) |

## What reviewers say

### InterSign

[App page](https://appshunter.io/ios/app/intersign-learn-lsm/id1570543920)

Master Mexican Sign Language (LSM) with interactive lessons and engaging games. This app offers a structured learning path from beginner to advanced, with a comprehensive dictionary and glossary to reinforce your vocabulary. Earn rewards as you progress through the curriculum.

**Highlights:** Over 90 expert-made lessons, Dictionary and glossary, Progressive learning path, Rewards system, Interactive games and activities, Sign variant updates planned

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intersign Premium - 1 month | $4.99 | per month |
| Premium Pass - 1 year | $29.99 | per year |

**What reviewers like**

- 👍 Easy to learn
- 👍 Great for beginners
- 👍 Clear explanations
- 👍 Good for learning grammar
- 👍 Comprehensive content

**What reviewers complain about**

- 🐛 App freezes/crashes
- 🐛 Repetitive lessons
- 🐛 Difficulty advancing levels
- 🐛 Missing correct answers
- 🐛 Not enough words/signs

**Reported bugs**

- App not downloading
- Images not loading in lessons
- Cannot select options in certain levels
- App freezes or crashes
- Cannot advance past block 4

**Requested features**

- More words and signs
- More dynamic activities
- More daily life vocabulary (tourism, games, art, school)
- Option to become a premium member
- More advanced content


### Prest Math

[App page](https://appshunter.io/ios/app/prest-math/id6497167604)

**In-app purchases:** none


## Frequently asked questions

### Is InterSign free?

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

### Is Prest Math free?

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

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*