# Deckify vs Knowia

The clearest difference is ads: Knowia at none against Deckify's shown. Knowia also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Deckify ships an update every 3 months, Knowia every 2 months. Both last shipped on October 2, 2026.

## The numbers

| Metric | Deckify | Knowia |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 5 MB | 49 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vadym Bondaruk](https://appshunter.io/developer/1888506811) | [Arda Berkay BAGIM](https://appshunter.io/developer/1888839593) |

## What reviewers say

### Deckify

[App page](https://appshunter.io/ios/app/deckify-study-flashcards/id6761266138)

**Features:** macOS Compatibility

**In-app purchases:** none


### Knowia

[App page](https://appshunter.io/ios/app/knowia-flashcards-and-learning/id6761316889)

**In-app purchases:** none


## Frequently asked questions

### Is Deckify free?

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

### Is Knowia free?

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

### Do Deckify or Knowia have ads?

Deckify shows ads; Knowia does not.

### Which is updated more often, Deckify or Knowia?

Deckify ships an update every 3 months, and Knowia every 2 months. Most recently, Deckify was updated on October 2, 2026 and Knowia on October 2, 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.*