# Knowledge Millionaire vs Animal Spot the Difference

The clearest difference is ads: Animal Spot the Difference at none against Knowledge Millionaire's shown. On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Knowledge Millionaire sells 4 one-off in-app purchases and Animal Spot the Difference sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Knowledge Millionaire | Animal Spot the Difference |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 11 days |
| Size | 20 MB | 96 MB |
| Requires iOS | 17 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Louis Saks](https://appshunter.io/developer/1866998868) | [帅 李](https://appshunter.io/developer/6801788026) |

## What reviewers say

### Knowledge Millionaire

[App page](https://appshunter.io/ios/app/knowledge-millionaire/id6762064395)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Coins | $0.99 | one-time |
| 500 Coins | $3.99 | one-time |
| 1000 Coins | $5.99 | one-time |
| 5000 Coins | $17.99 | one-time |


### Animal Spot the Difference

[App page](https://appshunter.io/ios/app/animal-spot-the-difference/id6804242780)

**Features:** macOS Compatibility

**In-app purchases (1)**

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


## Frequently asked questions

### Is Knowledge Millionaire free?

Knowledge Millionaire is free to download, with in-app purchases available.

### Is Animal Spot the Difference free?

Animal Spot the Difference is free to download, with in-app purchases available.

### Do Knowledge Millionaire or Animal Spot the Difference have ads?

Knowledge Millionaire shows ads; Animal Spot the Difference 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.*