# blueCompact vs Ernst

The clearest difference is update cadence: Ernst at every 3 days against blueCompact's every 3 months. 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.

blueCompact ships an update every 3 months, Ernst every 3 days. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | blueCompact | Ernst |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 61 MB | 22 MB |
| Requires iOS | **14.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Aug. Winkhaus SE](https://appshunter.io/developer/554989593) | [VALENTIN STEINWANDTER](https://appshunter.io/developer/6810718443) |

## What reviewers say

### blueCompact

[App page](https://appshunter.io/ios/app/bluecompact/id990934513)

Manage your building's access control system conveniently and securely from your smartphone. Program and manage keys, cylinders, and readers, and monitor all locking events with ease. Ideal for smart homes and small businesses.

**Highlights:** Easy smartphone control, Manage up to 99 keys and 25 cylinders, Block lost keys instantly, Monitor all locking events, Create custom time profiles for access, Remote authorization for doors

**In-app purchases:** none


### Ernst

[App page](https://appshunter.io/ios/app/ernst-prescriptions/id6810718441)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is blueCompact free?

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

### Is Ernst free?

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

### Do blueCompact or Ernst have ads?

Neither blueCompact nor Ernst shows ads.

### Which is updated more often, blueCompact or Ernst?

blueCompact ships an update every 3 months, and Ernst every 3 days. Most recently, blueCompact was updated on October 2, 2026 and Ernst on October 8, 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.*