# 4 Plus 4 vs BZF

The clearest difference is update cadence: BZF at every 2 weeks against 4 Plus 4's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 4 Plus 4 sells 1 one-off in-app purchase and BZF sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

4 Plus 4 ships an update monthly, BZF every 2 weeks. The most recent releases landed on September 29, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 4 Plus 4 | BZF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/4-plus-4/id1602292243/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 38 MB | 34 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Patrick Koehnen](https://appshunter.io/developer/431219217) | [Telmo Dias](https://appshunter.io/developer/524383293) |

## What reviewers say

### 4 Plus 4

[App page](https://appshunter.io/ios/app/4-plus-4/id1602292243)

This app offers a clear, step-by-step approach to learning mathematics. It features structured modules for number basics, arithmetic, and fractions, with playful sections to apply learned concepts. Designed to make math understandable and enjoyable, it's ideal for beginners and for refreshing knowledge.

**Highlights:** Clear learning modules, Step-by-step guidance, Structured practice, Playful application sections, Progress tracking, Ad-free experience

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Inclusive | $1.99 | one-time |


### BZF

[App page](https://appshunter.io/ios/app/bzf/id6478834646)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Full Version | $17.99 | one-time |


## Frequently asked questions

### Is 4 Plus 4 free?

4 Plus 4 is free to download, with in-app purchases available.

### Is BZF free?

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

### Do 4 Plus 4 or BZF have ads?

Neither 4 Plus 4 nor BZF shows ads.

### Which is updated more often, 4 Plus 4 or BZF?

4 Plus 4 ships an update monthly, and BZF every 2 weeks. Most recently, 4 Plus 4 was updated on September 29, 2026 and BZF on October 7, 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.*