# Spacetime LAYERS vs Open Monumentendag ©

The clearest difference is update cadence: Spacetime LAYERS at every 3 weeks against Open Monumentendag ©'s every 7 months. Spacetime LAYERS also leads on iOS requirement (11.0 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.

Spacetime LAYERS ships an update every 3 weeks, Open Monumentendag © every 7 months. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Spacetime LAYERS | Open Monumentendag © |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/open-monumentendag/id6479308441/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 7 months |
| Monetization | — | Free |
| Size | 106 MB | 26 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Note 2 Self](https://appshunter.io/developer/1211607270) | [Stichting Nederland Monumentenland](https://appshunter.io/developer/1711341651) |

## What reviewers say

### Spacetime LAYERS

[App page](https://appshunter.io/ios/app/spacetime-layers/id1382638760)

**Features:** macOS Compatibility

**In-app purchases:** none


### Open Monumentendag ©

[App page](https://appshunter.io/ios/app/open-monumentendag/id6479308441)

Discover thousands of open monuments across the Netherlands, with activities like tours, exhibitions, and routes for all ages. This event aims to increase public interest in heritage and monument care.

**Highlights:** Monument discovery, Event listings, Guided tours, Exhibitions, Routes and walks, Activities for youth

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Spacetime LAYERS free?

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

### Is Open Monumentendag © free?

Open Monumentendag © is free to download, with no in-app purchases.

### Do Spacetime LAYERS or Open Monumentendag © have ads?

Neither Spacetime LAYERS nor Open Monumentendag © shows ads.

### Which is updated more often, Spacetime LAYERS or Open Monumentendag ©?

Spacetime LAYERS ships an update every 3 weeks, and Open Monumentendag © every 7 months. Most recently, Spacetime LAYERS was updated on October 10, 2026 and Open Monumentendag © 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.*