# VIKI KNOWS vs Vitrum Design

The clearest difference is iOS requirement: VIKI KNOWS at 11.3 against Vitrum Design's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

VIKI KNOWS ships an update every 2 months, Vitrum Design every 4 months. The most recent releases landed on September 11, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | VIKI KNOWS | Vitrum Design |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 113 MB | 95 MB |
| Requires iOS | **11.3** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [VIKIKNOWS](https://appshunter.io/developer/1146360176) | [Morpheos](https://appshunter.io/developer/1267778702) |

## What reviewers say

### VIKI KNOWS

[App page](https://appshunter.io/ios/app/viki-knows/id1152283111)

**Features:** macOS Compatibility

**In-app purchases:** none


### Vitrum Design

[App page](https://appshunter.io/ios/app/vitrum-design/id1548058257)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VIKI KNOWS free?

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

### Is Vitrum Design free?

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

### Do VIKI KNOWS or Vitrum Design have ads?

Neither VIKI KNOWS nor Vitrum Design shows ads.

### Which is updated more often, VIKI KNOWS or Vitrum Design?

VIKI KNOWS ships an update every 2 months, and Vitrum Design every 4 months. Most recently, VIKI KNOWS was updated on September 11, 2026 and Vitrum Design on September 8, 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.*