# KNOWBODY vs Chartlotse

The clearest difference is in-app purchases: Chartlotse at none against KNOWBODY's 1. Chartlotse also leads on update cadence (weekly vs every 3 weeks). KNOWBODY's advantage is iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. KNOWBODY sells 1 one-off in-app purchase. Chartlotse asks for nothing beyond the download.

KNOWBODY ships an update every 3 weeks, Chartlotse weekly. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | KNOWBODY | Chartlotse |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 138 MB | 30 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [KNOWBODY UG (haftungsbeschränkt)](https://appshunter.io/developer/1562328903) | [Benjamin Adami](https://appshunter.io/developer/6800387525) |

## What reviewers say

### KNOWBODY

[App page](https://appshunter.io/ios/app/knowbody/id1562328901)

This app provides sexual education resources for secondary schools, suitable for all German states from 6th grade. Teachers and interested individuals can test it for free for 8 days.

**Highlights:** Sexual education content, Suitable for secondary schools (6th grade+), Bundensland-independent, Free 8-day trial for teachers, Login with Univention (Bremen)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Familienlizenz | $12.99 | one-time |


### Chartlotse

[App page](https://appshunter.io/ios/app/chartlotse-learn-trading/id6800387373)

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

**In-app purchases:** none


## Frequently asked questions

### Is KNOWBODY free?

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

### Is Chartlotse free?

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

### Do KNOWBODY or Chartlotse have ads?

Neither KNOWBODY nor Chartlotse shows ads.

### Which is updated more often, KNOWBODY or Chartlotse?

KNOWBODY ships an update every 3 weeks, and Chartlotse weekly. Most recently, KNOWBODY was updated on October 24, 2026 and Chartlotse on October 31, 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.*