# Sign3D vs Dictionnaire LSFB

The clearest difference is in-app purchases: Dictionnaire LSFB at none against Sign3D's 3. Sign3D's advantage is update cadence (fortnightly vs every 7 months) and iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Sign3D sells 3 one-off in-app purchases. Dictionnaire LSFB asks for nothing beyond the download.

Sign3D ships an update fortnightly, Dictionnaire LSFB every 7 months. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Sign3D | Dictionnaire LSFB |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 7 months |
| Monetization | Free | — |
| Size | 214 MB | 57 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 9+ | 9+ |
| Developer | [MocapLab](https://appshunter.io/developer/1397335378) | [Langue des Signes de Belgique Francophone](https://appshunter.io/developer/1819994095) |

## What reviewers say

### Sign3D

[App page](https://appshunter.io/ios/app/sign3d-lsf/id6443809599)

Learn French Sign Language (LSF) with an interactive 3D avatar and a comprehensive dictionary of over 5000 verified signs. Explore themed and personalized playlists, practice with a mini-game, and access all content offline.

**Highlights:** 5000+ verified LSF signs, Interactive 3D avatar, Adjustable sign speed and angle, Themed and personalized playlists, Offline access, Integrated mini-game, Search by sign description

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pack 18+ | $0.29 | one-time |
| Pack Avancé - 2000 signes | $3.99 | one-time |
| Pack Commun | $3.99 | one-time |


### Dictionnaire LSFB

[App page](https://appshunter.io/ios/app/dictionnaire-lsfb/id6747142463)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sign3D free?

Sign3D is free to download, with in-app purchases available.

### Is Dictionnaire LSFB free?

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

### Do Sign3D or Dictionnaire LSFB have ads?

Neither Sign3D nor Dictionnaire LSFB shows ads.

### Which is updated more often, Sign3D or Dictionnaire LSFB?

Sign3D ships an update fortnightly, and Dictionnaire LSFB every 7 months. Most recently, Sign3D was updated on October 7, 2026 and Dictionnaire LSFB on October 15, 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.*