# KSOB vs 18vier8

KSOB and 18vier8 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | KSOB | 18vier8 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Size | 84 MB | 83 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kliniken Südostbayern AG](https://appshunter.io/developer/1504265295) | [Carl Remigius Fresenius Education AG](https://appshunter.io/developer/681675742) |

## What reviewers say

### KSOB

[App page](https://appshunter.io/ios/app/ksob-app/id1504265296)

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

**In-app purchases:** none


### 18vier8

[App page](https://appshunter.io/ios/app/18vier8/id6446285075)

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

**In-app purchases:** none


## Frequently asked questions

### Is KSOB free?

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

### Is 18vier8 free?

18vier8 is free to download, with no in-app purchases.

### Do KSOB or 18vier8 have ads?

Neither KSOB nor 18vier8 shows ads.

### Which is updated more often, KSOB or 18vier8?

KSOB ships an update fortnightly, and 18vier8 fortnightly. Most recently, KSOB was updated on October 10, 2026 and 18vier8 on October 7, 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.*