# Welyflor WebApp vs KJ Heemskerk

The clearest difference is update cadence: KJ Heemskerk at every 3 months against Welyflor WebApp's every 39 months. KJ Heemskerk also leads on iOS requirement (12.0 vs 15.6). 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.

Welyflor WebApp ships an update every 39 months, KJ Heemskerk every 3 months. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Welyflor WebApp | KJ Heemskerk |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 3 months** |
| Size | 11 MB | 7 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Welyflor B.V.](https://appshunter.io/developer/891592647) | [KJ Heemskerk B.V.](https://appshunter.io/developer/1531314601) |

## What reviewers say

### Welyflor WebApp

[App page](https://appshunter.io/ios/app/welyflor-webapp/id891592644)

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

**In-app purchases:** none


### KJ Heemskerk

[App page](https://appshunter.io/ios/app/kj-heemskerk/id1531314599)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Welyflor WebApp free?

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

### Is KJ Heemskerk free?

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

### Do Welyflor WebApp or KJ Heemskerk have ads?

Neither Welyflor WebApp nor KJ Heemskerk shows ads.

### Which is updated more often, Welyflor WebApp or KJ Heemskerk?

Welyflor WebApp ships an update every 39 months, and KJ Heemskerk every 3 months. Most recently, Welyflor WebApp was updated on October 6, 2026 and KJ Heemskerk on October 4, 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.*