# einblick | DKFZ vs MultiplyByFun

The clearest difference is in-app purchases: einblick | DKFZ at none against MultiplyByFun's 2. einblick | DKFZ also leads on iOS requirement (11.0 vs 13.0). MultiplyByFun's advantage is update cadence (every 3 weeks vs every 48 months). On price, ads and device support there is nothing between them.

Both are free to download. MultiplyByFun sells 2 one-off in-app purchases. einblick | DKFZ asks for nothing beyond the download.

einblick | DKFZ ships an update every 48 months, MultiplyByFun every 3 weeks. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | einblick | DKFZ | MultiplyByFun |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 48 months | **Every 3 weeks** |
| Size | 109 MB | 6 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Deutsches Krebsforschungszentrum](https://appshunter.io/developer/1105810592) | [Robin Burrer](https://appshunter.io/developer/1774550039) |

## What reviewers say

### einblick | DKFZ

[App page](https://appshunter.io/ios/app/einblick-dkfz/id1105810593)

**Features:** macOS Compatibility

**In-app purchases:** none


### MultiplyByFun

[App page](https://appshunter.io/ios/app/multiplybyfun-watch-math/id6737068255)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access | $0.99 | one-time |
| Buy me a coffee | $1.99 | one-time |


## Frequently asked questions

### Is einblick | DKFZ free?

einblick | DKFZ is free to download, with no in-app purchases.

### Is MultiplyByFun free?

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

### Do einblick | DKFZ or MultiplyByFun have ads?

Neither einblick | DKFZ nor MultiplyByFun shows ads.

### Which is updated more often, einblick | DKFZ or MultiplyByFun?

einblick | DKFZ ships an update every 48 months, and MultiplyByFun every 3 weeks. Most recently, einblick | DKFZ was updated on October 8, 2026 and MultiplyByFun on October 2, 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.*