# 3D4DEAF vs SignFlow BSL

The clearest difference is in-app purchases: 3D4DEAF at none against SignFlow BSL's 5. 3D4DEAF also leads on iOS requirement (15.6 vs 17.6). SignFlow BSL's advantage is update cadence (fortnightly vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. SignFlow BSL sells 5 one-off in-app purchases. 3D4DEAF asks for nothing beyond the download.

3D4DEAF ships an update every 5 months, SignFlow BSL fortnightly. Both last shipped on October 5, 2026.

## The numbers

| Metric | 3D4DEAF | SignFlow BSL |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Size | 107 MB | 20 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [A&A EMPHASYS INTERACTIVE SOLUTIONS LIMITED](https://appshunter.io/developer/1732476255) | [Datatid AS](https://appshunter.io/developer/1800997272) |

## What reviewers say

### 3D4DEAF

[App page](https://appshunter.io/ios/app/3d4deaf/id6504680635)

**Features:** macOS Compatibility

**In-app purchases:** none


### SignFlow BSL

[App page](https://appshunter.io/ios/app/signflow-bsl/id6761985607)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $1.99 | one-time |
| Generous Support | $4.99 | one-time |
| SignFlow BSL Lifetime | $14.99 | one-time |
| Amazing Support | $19.99 | one-time |
| SignFlow Champion | $99.99 | one-time |


## Frequently asked questions

### Is 3D4DEAF free?

3D4DEAF is free to download, with no in-app purchases.

### Is SignFlow BSL free?

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

### Do 3D4DEAF or SignFlow BSL have ads?

Neither 3D4DEAF nor SignFlow BSL shows ads.

### Which is updated more often, 3D4DEAF or SignFlow BSL?

3D4DEAF ships an update every 5 months, and SignFlow BSL fortnightly. Most recently, 3D4DEAF was updated on October 5, 2026 and SignFlow BSL on October 5, 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.*