# Biological Code vs New City Katechismus

The clearest difference is in-app purchases: New City Katechismus at none against Biological Code's 6. New City Katechismus also leads on iOS requirement (11.0 vs 13.0). Biological Code's advantage is update cadence (weekly vs every 16 months). On price, ads and device support there is nothing between them.

Both are free to download. Biological Code sells 6 in-app purchases, starting at $29.99 per month. New City Katechismus asks for nothing beyond the download.

Biological Code ships an update weekly, New City Katechismus every 16 months. The most recent releases landed on September 10, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Biological Code | New City Katechismus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 16 months |
| Size | 132 MB | 13 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Connected Kingdoms LLC](https://appshunter.io/developer/1453544780) | [Evangelium21 e.V.](https://appshunter.io/developer/1466740213) |

## What reviewers say

### Biological Code

[App page](https://appshunter.io/ios/app/biological-code/id1453544781)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vollversion | $29.99 | per month |
| Organdatenbank, monatlich | $29.99 | per month |
| Biologischer Code | $0.99 | one-time |
| 15 Coach Guthaben | $5.99 | one-time |
| 45 Coach Guthaben | $11.99 | one-time |
| 120 Coach Guthaben | $49.99 | one-time |


### New City Katechismus

[App page](https://appshunter.io/ios/app/new-city-katechismus/id1466740214)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Biological Code free?

Biological Code is free to download, with in-app purchases available.

### Is New City Katechismus free?

New City Katechismus is free to download, with no in-app purchases.

### Do Biological Code or New City Katechismus have ads?

Neither Biological Code nor New City Katechismus shows ads.

### Which is updated more often, Biological Code or New City Katechismus?

Biological Code ships an update weekly, and New City Katechismus every 16 months. Most recently, Biological Code was updated on September 10, 2026 and New City Katechismus on September 15, 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.*