# KOOS vs Het Energieopslagevent

The clearest difference is update cadence: KOOS at every 4 weeks against Het Energieopslagevent's every 8 months. KOOS also leads on iOS requirement (12.2 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

KOOS ships an update every 4 weeks, Het Energieopslagevent every 8 months. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | KOOS | Het Energieopslagevent |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 8 months |
| Size | 232 MB | 65 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [SDB Groep](https://appshunter.io/developer/1556048345) | [e-Identity](https://appshunter.io/developer/1336065049) |

## What reviewers say

### KOOS

[App page](https://appshunter.io/ios/app/koos/id1644294305)

**In-app purchases:** none


### Het Energieopslagevent

[App page](https://appshunter.io/ios/app/het-energieopslagevent/id6711347131)

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

**In-app purchases:** none


## Frequently asked questions

### Is KOOS free?

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

### Is Het Energieopslagevent free?

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

### Do KOOS or Het Energieopslagevent have ads?

Neither KOOS nor Het Energieopslagevent shows ads.

### Which is updated more often, KOOS or Het Energieopslagevent?

KOOS ships an update every 4 weeks, and Het Energieopslagevent every 8 months. Most recently, KOOS was updated on November 7, 2026 and Het Energieopslagevent on November 8, 2026.

---

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