# Visible Knowledge vs SSK

The clearest difference is in-app purchases: Visible Knowledge at none against SSK's 3. Visible Knowledge also leads on iOS requirement (12.4 vs 15.1). SSK's advantage is device support. On price there is nothing between them.

Both are free to download. SSK sells 3 in-app purchases, starting at $7.99 per month. Visible Knowledge asks for nothing beyond the download.

## The numbers

| Metric | Visible Knowledge | SSK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 6 days |
| Size | 21 MB | 137 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Visible care Sweden AB](https://appshunter.io/developer/1485727328) | [Nezir Alabsi](https://appshunter.io/developer/6785079797) |

## What reviewers say

### Visible Knowledge

[App page](https://appshunter.io/ios/app/visible-knowledge/id1629871489)

**In-app purchases:** none


### SSK

[App page](https://appshunter.io/ios/app/ssk-app/id6785079795)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - 1 månad | $7.99 | per month |
| Premium - 6 månader | $24.99 | per 6 months |
| Premium - 12 månader | $49.99 | per year |


## Frequently asked questions

### Is Visible Knowledge free?

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

### Is SSK free?

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

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*