# Kehlen App vs BD Contern

The clearest difference is update cadence: Kehlen App at monthly against BD Contern's every 10 months. Kehlen App also leads on device support. On price, in-app purchases and iOS requirement there is nothing between them.

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

Kehlen App ships an update monthly, BD Contern every 10 months. The most recent releases landed on October 21, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Kehlen App | BD Contern |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | **Monthly** | Every 10 months |
| Size | 34 MB | 55 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [custom coding SARL](https://appshunter.io/developer/1517073076) | [MackNet Sarl](https://appshunter.io/developer/484649388) |

## What reviewers say

### Kehlen App

[App page](https://appshunter.io/ios/app/kehlen-app/id1586565085)

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

**In-app purchases:** none


### BD Contern

[App page](https://appshunter.io/ios/app/bd-contern/id6503652478)

**In-app purchases:** none


## Frequently asked questions

### Is Kehlen App free?

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

### Is BD Contern free?

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

### Which is updated more often, Kehlen App or BD Contern?

Kehlen App ships an update monthly, and BD Contern every 10 months. Most recently, Kehlen App was updated on October 21, 2026 and BD Contern on October 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.*