# libretto42 vs EFM App

The clearest difference is update cadence: EFM App at every 4 days against libretto42's every 3 weeks. 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.

libretto42 ships an update every 3 weeks, EFM App every 4 days. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | libretto42 | EFM App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 23 MB | 37 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Lemon42 IT, Web und Software GmbH](https://appshunter.io/developer/794941037) | [Kulturveranstaltungen des Bundes in Berlin (KBB) Gesellschaft mit beschraenkter Haftung](https://appshunter.io/developer/1861804458) |

## What reviewers say

### libretto42

[App page](https://appshunter.io/ios/app/libretto42/id6755678688)

**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 libretto42 free?

libretto42 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 libretto42 or EFM App have ads?

Neither libretto42 nor EFM App shows ads.

### Which is updated more often, libretto42 or EFM App?

libretto42 ships an update every 3 weeks, and EFM App every 4 days. Most recently, libretto42 was updated on October 2, 2026 and EFM App on October 10, 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.*