# The Core Effect vs Velthuis kliniek

The Core Effect and Velthuis kliniek 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.

The Core Effect ships an update every 2 months, Velthuis kliniek every 3 weeks. The most recent releases landed on September 18, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | The Core Effect | Velthuis kliniek |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 421 MB | 109 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Alexandra Woodall](https://appshunter.io/developer/1732208972) | [Equipe Zorgbedrijven Nederland B.V.](https://appshunter.io/developer/1553890237) |

## What reviewers say

### The Core Effect

[App page](https://appshunter.io/ios/app/the-core-effect/id6478200604)

**Features:** macOS Compatibility

**In-app purchases:** none


### Velthuis kliniek

[App page](https://appshunter.io/ios/app/velthuis-kliniek/id6502643613)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is The Core Effect free?

The Core Effect is free to download, with no in-app purchases.

### Is Velthuis kliniek free?

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

### Do The Core Effect or Velthuis kliniek have ads?

Neither The Core Effect nor Velthuis kliniek shows ads.

### Which is updated more often, The Core Effect or Velthuis kliniek?

The Core Effect ships an update every 2 months, and Velthuis kliniek every 3 weeks. Most recently, The Core Effect was updated on September 18, 2026 and Velthuis kliniek on September 20, 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.*