# Occult Science vs Jargon

The clearest difference is in-app purchases: Jargon at none against Occult Science's 1. Jargon also leads on update cadence (fortnightly vs every 10 months). On price, ads, device support and iOS requirement there is nothing between them.

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

Occult Science ships an update every 10 months, Jargon fortnightly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Occult Science | Jargon |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Fortnightly** |
| Size | 274 MB | 2 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [ALL INDIA INSTITUTE OF OCCULT SCIENCE](https://appshunter.io/developer/1610107660) | [Mathew Brown](https://appshunter.io/developer/6796435386) |

## What reviewers say

### Occult Science

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

**Features:** Vision Pro support

**In-app purchases (1)**

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


### Jargon

[App page](https://appshunter.io/ios/app/jargon-hacker-dictionary/id6796777990)

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

**In-app purchases:** none


## Frequently asked questions

### Is Occult Science free?

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

### Is Jargon free?

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

### Do Occult Science or Jargon have ads?

Neither Occult Science nor Jargon shows ads.

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

Occult Science ships an update every 10 months, and Jargon fortnightly. Most recently, Occult Science was updated on November 3, 2026 and Jargon on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*