# InterSign vs BUAP

The clearest difference is in-app purchases: BUAP at none against InterSign's 2. InterSign's advantage is iOS requirement (13.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

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

InterSign ships an update every 3 weeks, BUAP fortnightly. The most recent releases landed on September 24, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | InterSign | BUAP |
| --- | --- | --- |
| 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 | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 143 MB | 43 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Intersign Apps, S.A. de C.V.](https://appshunter.io/developer/1567139339) | [BUAP](https://appshunter.io/developer/1742647079) |

## 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


### BUAP

[App page](https://appshunter.io/ios/app/buap/id6683299623)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is InterSign free?

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

### Is BUAP free?

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

### Do InterSign or BUAP have ads?

Neither InterSign nor BUAP shows ads.

### Which is updated more often, InterSign or BUAP?

InterSign ships an update every 3 weeks, and BUAP fortnightly. Most recently, InterSign was updated on September 24, 2026 and BUAP on September 11, 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.*