# Occult Science vs Mastering Alchemy

The clearest difference is update cadence: Mastering Alchemy at every 3 weeks against Occult Science's every 10 months. Occult Science's advantage is iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Occult Science sells 1 one-off in-app purchase and Mastering Alchemy sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Occult Science ships an update every 10 months, Mastering Alchemy every 3 weeks. The most recent releases landed on September 23, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Occult Science | Mastering Alchemy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 weeks** |
| Size | 324 MB | 79 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ALL INDIA INSTITUTE OF OCCULT SCIENCE](https://appshunter.io/developer/1610107660) | [Mastering Alchemy](https://appshunter.io/developer/1703887493) |

## 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 |


### Mastering Alchemy

[App page](https://appshunter.io/ios/app/mastering-alchemy/id6463052946)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| The Art of Being Okay | $57.00 | one-time |
| Energy Essentials - Level 1 | $124.99 | one-time |


## Frequently asked questions

### Is Occult Science free?

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

### Is Mastering Alchemy free?

Mastering Alchemy is free to download, with in-app purchases available.

### Do Occult Science or Mastering Alchemy have ads?

Neither Occult Science nor Mastering Alchemy shows ads.

### Which is updated more often, Occult Science or Mastering Alchemy?

Occult Science ships an update every 10 months, and Mastering Alchemy every 3 weeks. Most recently, Occult Science was updated on September 23, 2026 and Mastering Alchemy on September 11, 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.*