# Kumulus vs Kerzerslauf

The clearest difference is in-app purchases: Kumulus at none against Kerzerslauf's 2. Kumulus also leads on ads (none vs shown) and iOS requirement (12.0 vs 17.0). Kerzerslauf's advantage is update cadence (every 4 weeks vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Kerzerslauf sells 2 in-app purchases, starting at $5.99 per year. Kumulus asks for nothing beyond the download.

Kumulus ships an update every 5 months, Kerzerslauf every 4 weeks. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Kumulus | Kerzerslauf |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 4 weeks** |
| Size | 59 MB | 115 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [KUMULUS ACTIVE WORLD 2012 SL](https://appshunter.io/developer/1573722370) | [Verein Kerzerslauf](https://appshunter.io/developer/1782912073) |

## What reviewers say

### Kumulus

[App page](https://appshunter.io/ios/app/kumulus/id1573722368)

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

**In-app purchases:** none


### Kerzerslauf

[App page](https://appshunter.io/ios/app/kerzerslauf/id6738921589)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PLUS Unlimited | $5.99 | per year |
| PLUS Single Event | $3.99 | one-time |


## Frequently asked questions

### Is Kumulus free?

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

### Is Kerzerslauf free?

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

### Do Kumulus or Kerzerslauf have ads?

Kerzerslauf shows ads; Kumulus does not.

### Which is updated more often, Kumulus or Kerzerslauf?

Kumulus ships an update every 5 months, and Kerzerslauf every 4 weeks. Most recently, Kumulus was updated on September 9, 2026 and Kerzerslauf on September 10, 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.*