# Bully Button School vs MK Filter

The clearest difference is in-app purchases: Bully Button School at none against MK Filter's 2. Bully Button School also leads on iOS requirement (13.4 vs 15.6). MK Filter's advantage is update cadence (monthly vs every 55 months). On price, ads and device support there is nothing between them.

Both are free to download. MK Filter sells 2 in-app purchases, starting at $4.99 per 7 days. Bully Button School asks for nothing beyond the download.

Bully Button School ships an update every 55 months, MK Filter monthly. The most recent releases landed on September 19, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Bully Button School | MK Filter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (56 ratings)](https://appshunter.io/ios/app/mk-filter/id6670487344/reviews)** |
| Number of ratings | — | **56** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 55 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 51 MB | 14 MB |
| Requires iOS | **13.4** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WeblineIndia](https://appshunter.io/developer/1173777651) | [Michael Cabo](https://appshunter.io/developer/1779065708) |

## What reviewers say

### Bully Button School

[App page](https://appshunter.io/ios/app/bully-button-school/id1530043167)

**Features:** macOS Compatibility

**In-app purchases:** none


### MK Filter

[App page](https://appshunter.io/ios/app/mk-filter/id6670487344)

Transform your photos into legendary fighters with striking visual effects. Create personalized fighters by selecting iconic characters or uploading your own image. Easily save, share, and collect your custom creations.

**Highlights:** Photo transformation into fighters, Iconic character selection, Upload personal photos, Striking visual effects, Save and share creations, Collect custom images

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DOF Weekly Pro | $4.99 | per 7 days |
| DOF Weekly Trial | $4.99 | per 7 days |


## Frequently asked questions

### Is Bully Button School free?

Bully Button School is free to download, with no in-app purchases.

### Is MK Filter free?

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

### Do Bully Button School or MK Filter have ads?

Neither Bully Button School nor MK Filter shows ads.

### Which is updated more often, Bully Button School or MK Filter?

Bully Button School ships an update every 55 months, and MK Filter monthly. Most recently, Bully Button School was updated on September 19, 2026 and MK Filter on September 24, 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.*