# Cardfoq vs HyperPi

The clearest difference is in-app purchases: HyperPi at none against Cardfoq's 10. Cardfoq's advantage is iOS requirement (17.0 vs 26.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Cardfoq sells 10 one-off in-app purchases. HyperPi asks for nothing beyond the download.

Cardfoq ships an update every 2 months, HyperPi every 5 weeks. The most recent releases landed on October 31, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Cardfoq | HyperPi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/cardfoq/id6757342579/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 17 MB | 15 MB |
| Requires iOS | **17.0** | 26.1 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Joshua Johannes Hoffmann](https://appshunter.io/developer/1859403935) | [Bassem Allani](https://appshunter.io/developer/1847393265) |

## What reviewers say

### Cardfoq

[App page](https://appshunter.io/ios/app/cardfoq/id6757342579)

This app helps students memorize knowledge and learn effectively with customizable flashcards. Organize your study materials, track progress, and sync across devices. Share and export your study sets with friends and classmates.

**Highlights:** Create unlimited custom flashcards, Add images to cards, Organize stacks in folders, Track progress with statistics, Automatic iCloud synchronization, Share and export stacks, Dark mode

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Financial Mathematics | $0.49 | one-time |
| Geometry | $0.49 | one-time |
| Calculus | $0.49 | one-time |
| Cell Biology | $0.49 | one-time |
| Linear Algebra | $0.49 | one-time |
| Statistics | $0.49 | one-time |
| Ecology | $0.49 | one-time |
| Genetics | $0.49 | one-time |
| Human Biology | $0.49 | one-time |
| Evolution | $0.49 | one-time |


### HyperPi

[App page](https://appshunter.io/ios/app/hyperpi-learn-pi-314/id6761498237)

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

**In-app purchases:** none


## Frequently asked questions

### Is Cardfoq free?

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

### Is HyperPi free?

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

### Do Cardfoq or HyperPi have ads?

Neither Cardfoq nor HyperPi shows ads.

### Which is updated more often, Cardfoq or HyperPi?

Cardfoq ships an update every 2 months, and HyperPi every 5 weeks. Most recently, Cardfoq was updated on October 31, 2026 and HyperPi on November 4, 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.*