# Einstein's Relativity vs Milo's World App

The clearest difference is update cadence: Milo's World App at monthly against Einstein's Relativity's every 24 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Einstein's Relativity sells 2 one-off in-app purchases and Milo's World App sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Einstein's Relativity ships an update every 24 months, Milo's World App monthly. Both last shipped on October 30, 2026.

## The numbers

| Metric | Einstein's Relativity | Milo's World App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/milos-world-app/id6468959341/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 322 MB | 556 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Human Heroes Ltd](https://appshunter.io/developer/1442853426) | [Planeta Junior SL](https://appshunter.io/developer/1577786690) |

## What reviewers say

### Einstein's Relativity

[App page](https://appshunter.io/ios/app/einsteins-relativity/id6468444718)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| The Sensation of Seconds | $0.99 | one-time |
| The Cadence Of Clocks | $0.99 | one-time |


### Milo's World App

[App page](https://appshunter.io/ios/app/milos-world-app/id6468959341)

An interactive educational app for preschoolers aged 3-6, introducing various professions through mini-games and creative activities. Explore different roles, collect stickers, and watch clips from the TV series in a safe, ad-free environment.

**Highlights:** Interactive mini-games about professions, Creative 'paint & color' section, Sticker collection and album completion, Milo TV clips and episodes, Printable offline activities, Safe, ad-free environment

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Milo pass | $4.99 | one-time |


## Frequently asked questions

### Is Einstein's Relativity free?

Einstein's Relativity is free to download, with in-app purchases available.

### Is Milo's World App free?

Milo's World App is free to download, with in-app purchases available.

### Do Einstein's Relativity or Milo's World App have ads?

Neither Einstein's Relativity nor Milo's World App shows ads.

### Which is updated more often, Einstein's Relativity or Milo's World App?

Einstein's Relativity ships an update every 24 months, and Milo's World App monthly. Most recently, Einstein's Relativity was updated on October 30, 2026 and Milo's World App on October 30, 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.*