# Knowledge Empire vs Vijull

The clearest difference is in-app purchases: Knowledge Empire at none against Vijull's 2. Knowledge Empire also leads on iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Vijull sells 2 one-off in-app purchases. Knowledge Empire asks for nothing beyond the download.

Knowledge Empire ships an update fortnightly, Vijull every 2 weeks. The most recent releases landed on September 10, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Knowledge Empire | Vijull |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 79 MB | 187 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Blue Elephants Solutions Pte. Ltd.](https://appshunter.io/developer/1491903274) | [KATASTROPHIC AI CORPORATION](https://appshunter.io/developer/1530430296) |

## What reviewers say

### Knowledge Empire

[App page](https://appshunter.io/ios/app/knowledge-empire/id1491903275)

**In-app purchases:** none


### Vijull

[App page](https://appshunter.io/ios/app/vijull/id6476420396)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Public Memorial & Dashboard Access | $19.99 | one-time |
| Private to You Memorial Shrine | $34.99 | one-time |


## Frequently asked questions

### Is Knowledge Empire free?

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

### Is Vijull free?

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

### Do Knowledge Empire or Vijull have ads?

Neither Knowledge Empire nor Vijull shows ads.

### Which is updated more often, Knowledge Empire or Vijull?

Knowledge Empire ships an update fortnightly, and Vijull every 2 weeks. Most recently, Knowledge Empire was updated on September 10, 2026 and Vijull on September 24, 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.*