# ZYGON vs Occult Science

The clearest difference is in-app purchases: ZYGON at none against Occult Science's 1. Occult Science's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

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

ZYGON ships an update every 5 months, Occult Science every 10 months. The most recent releases landed on September 8, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | ZYGON | Occult Science |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (23 ratings)](https://appshunter.io/ios/app/zygon/id1576900017/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 months** | Every 10 months |
| Monetization | Ad-supported | — |
| Size | 72 MB | 324 MB |
| Requires iOS | **12.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [dane spotts](https://appshunter.io/developer/1576900019) | [ALL INDIA INSTITUTE OF OCCULT SCIENCE](https://appshunter.io/developer/1610107660) |

## What reviewers say

### ZYGON

[App page](https://appshunter.io/ios/app/zygon/id1576900017)

This app uses neurotechnology to help you rewire thoughts, reprogram beliefs, and unlock your potential. It offers tools for stress reduction, confidence boosts, improved focus, and achieving success through mental training.

**Highlights:** Over 1000 transformational programs, Instant brain reset with audio entrainment, Subconscious reprogramming tools, Mental training for sleep and focus, Stream or download for offline listening

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is ZYGON free?

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

### Is Occult Science free?

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

### Do ZYGON or Occult Science have ads?

ZYGON shows ads; Occult Science does not.

### Which is updated more often, ZYGON or Occult Science?

ZYGON ships an update every 5 months, and Occult Science every 10 months. Most recently, ZYGON was updated on September 8, 2026 and Occult Science on September 23, 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.*