# Einstein's Elevator vs Time Dilation Explorer Lab

The clearest difference is price: Time Dilation Explorer Lab at Free against Einstein's Elevator's $1.99. Einstein's Elevator's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Time Dilation Explorer Lab is free to download; Einstein's Elevator costs $1.99 up front. Time Dilation Explorer Lab sells 1 one-off in-app purchase. Einstein's Elevator asks for nothing beyond the download.

## The numbers

| Metric | Einstein's Elevator | Time Dilation Explorer Lab |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Size | 41 MB | 16 MB |
| Requires iOS | **13.2** | 26.2 |
| Devices | iPad, Apple TV | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Einstein's Elevator

[App page](https://appshunter.io/ios/app/einsteins-elevator/id6648794228)

**Features:** macOS Compatibility

**In-app purchases:** none


### Time Dilation Explorer Lab

[App page](https://appshunter.io/ios/app/time-dilation-explorer-lab/id6773199521)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $2.99 | one-time |


## Frequently asked questions

### Is Einstein's Elevator free?

Einstein's Elevator costs $1.99, with no in-app purchases.

### Is Time Dilation Explorer Lab free?

Time Dilation Explorer Lab is free to download, with in-app purchases available.

### Do Einstein's Elevator or Time Dilation Explorer Lab have ads?

Time Dilation Explorer Lab shows ads; Einstein's Elevator does not.

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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.*