# Occult Science vs Universal Principles

The clearest difference is in-app purchases: Universal Principles at none against Occult Science's 1. Universal Principles also leads on iOS requirement (11.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Occult Science sells 1 one-off in-app purchase. Universal Principles asks for nothing beyond the download.

## The numbers

| Metric | Occult Science | Universal Principles |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Size | 324 MB | 12 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ALL INDIA INSTITUTE OF OCCULT SCIENCE](https://appshunter.io/developer/1610107660) | [Mind Body Aware Games LLC](https://appshunter.io/developer/1018615903) |

## What reviewers say

### Occult Science

[App page](https://appshunter.io/ios/app/occult-science/id1610107658)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diploma in Tarot 2022-Batch 3 | $22.99 | one-time |


### Universal Principles

[App page](https://appshunter.io/ios/app/universal-principles/id1613390887)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Occult Science free?

Occult Science is free to download, with in-app purchases available.

### Is Universal Principles free?

Universal Principles is free to download, with no in-app purchases.

### Do Occult Science or Universal Principles have ads?

Neither Occult Science nor Universal Principles 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.*