# RelativityTheory vs Einstein's Elevator

The clearest difference is price: RelativityTheory at $0.99 against Einstein's Elevator's $1.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

RelativityTheory costs $0.99 and Einstein's Elevator $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | RelativityTheory | Einstein's Elevator |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 6 MB | 41 MB |
| Requires iOS | 14.4 | **13.2** |
| Devices | **iPhone, iPad, iPod** | iPad, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Takao Akatsu](https://appshunter.io/developer/1530946331) | [Ventura Educational Systems](https://appshunter.io/developer/371324172) |

## What reviewers say

### RelativityTheory

[App page](https://appshunter.io/ios/app/relativitytheory/id1620999874)

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

**In-app purchases:** none


### Einstein's Elevator

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RelativityTheory free?

RelativityTheory costs $0.99, with no in-app purchases.

### Is Einstein's Elevator free?

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

### Do RelativityTheory or Einstein's Elevator have ads?

Neither RelativityTheory nor Einstein's Elevator shows ads.

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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.*