# WOLF vs EFM App

The clearest difference is update cadence: EFM App at every 4 days against WOLF's every 3 weeks. WOLF's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

WOLF ships an update every 3 weeks, EFM App every 4 days. The most recent releases landed on September 8, 2026 and May 18, 2026 respectively.

## The numbers

| Metric | WOLF | EFM App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 294 MB | 37 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Alex Verhaest](https://appshunter.io/developer/1810454673) | [Kulturveranstaltungen des Bundes in Berlin (KBB) Gesellschaft mit beschraenkter Haftung](https://appshunter.io/developer/1861804458) |

## What reviewers say

### WOLF

[App page](https://appshunter.io/ios/app/wolf/id6745024496)

**Features:** macOS Compatibility

**In-app purchases:** none


### EFM App

[App page](https://appshunter.io/ios/app/efm-app/id6756614626)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WOLF free?

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

### Is EFM App free?

EFM App is free to download, with no in-app purchases.

### Do WOLF or EFM App have ads?

Neither WOLF nor EFM App shows ads.

### Which is updated more often, WOLF or EFM App?

WOLF ships an update every 3 weeks, and EFM App every 4 days. Most recently, WOLF was updated on September 8, 2026 and EFM App on May 18, 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.*