# Knowia vs CardFlip

The clearest difference is in-app purchases: Knowia at none against CardFlip's 1. CardFlip's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CardFlip sells 1 one-off in-app purchase. Knowia asks for nothing beyond the download.

Knowia ships an update every 2 months, CardFlip every 3 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Knowia | CardFlip |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (4 ratings)](https://appshunter.io/ios/app/cardflip-flashcard-maker/id6766610610/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 49 MB | 70 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Arda Berkay BAGIM](https://appshunter.io/developer/1888839593) | [Gunawan Santoso](https://appshunter.io/developer/1843786072) |

## What reviewers say

### Knowia

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

**In-app purchases:** none


### CardFlip

[App page](https://appshunter.io/ios/app/cardflip-flashcard-maker/id6766610610)

Create custom flashcards with spaced repetition to optimize your study schedule. Supports multiple study modes, including quizzes and typing answers, with options for adding images and audio. Study offline and track your progress with daily streaks and achievements.

**Highlights:** Custom flashcard creation, Spaced repetition study planning, Multiple study modes (flip, quiz, match, type), Add images and audio to cards, Offline study functionality, Progress tracking and achievements, Import/export flashcard decks

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CardFlip Pro | $6.99 | one-time |


## Frequently asked questions

### Is Knowia free?

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

### Is CardFlip free?

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

### Do Knowia or CardFlip have ads?

Neither Knowia nor CardFlip shows ads.

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

Knowia ships an update every 2 months, and CardFlip every 3 weeks. Most recently, Knowia was updated on October 31, 2026 and CardFlip on November 5, 2026.

---

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