# 3F vs PROBLOCK

The clearest difference is in-app purchases: 3F at none against PROBLOCK's 1. 3F also leads on ads (none vs shown) and iOS requirement (8.0 vs 13.0). On price and device support there is nothing between them.

Both are free to download. PROBLOCK sells 1 in-app purchase, starting at $7.99 per 7 days. 3F asks for nothing beyond the download.

## The numbers

| Metric | 3F | PROBLOCK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | — | Every 4 days |
| Size | 24 MB | 39 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Framelova](https://appshunter.io/developer/452920432) | [AdProject Store](https://appshunter.io/developer/1504690974) |

## What reviewers say

### 3F

[App page](https://appshunter.io/ios/app/3f/id1445950342)

**Features:** macOS Compatibility

**In-app purchases:** none


### PROBLOCK

[App page](https://appshunter.io/ios/app/problock/id1611954740)

**Features:** Safari Extension, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PROBLOCK Weekly With Trial | $7.99 | per 7 days |


## Frequently asked questions

### Is 3F free?

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

### Is PROBLOCK free?

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

### Do 3F or PROBLOCK have ads?

PROBLOCK shows ads; 3F does not.

---

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