# AF:Note Cards — Data-Driven Learning System

> Data-Driven Learning System (iPhone/iPad app by 晓 郭.)

- Source: https://appshunter.io/ios/app/afnote-cards/id6768655398 (this page in markdown: same URL + `.md`)
- Developer: [晓 郭](https://appshunter.io/developer/1895645928)
- Category: Utilities
- Price: Free
- Age rating: 9+
- Requires: iOS 17.0 · 0 MB
- Languages: American English
- Released: 2026-05-14
- Data updated: 2026-08-04
- User reviews in markdown: https://appshunter.io/ios/app/afnote-cards/id6768655398/reviews.md

## What is AF?

Note Cards is a professional flashcard learning tool built on the principle of Active Recall from cognitive science.

Master Active Recall. Note Cards transforms scientific learning into a seamless, offline iOS experience. No distractions, just pure focus.

Core Features and Technical Implementation:

· Active Recall Training — The flip-to-reveal interaction pattern forces your brain to actively retrieve memories, proven to be over fifty percent more effective than passive reading.
· Quantified Learning Analytics — Each card independently tracks correct and incorrect attempts with automatic deck-wide accuracy calculation, enabling data-driven learning decisions.
· Randomized Spaced Review — Cards are shuffled each session, combined with accuracy data to identify weak areas, delivering efficient spaced repetition effects.
· Session-Level Performance Metrics — Real-time tracking of accuracy and error rates per study session, quantifying your learning return on investment.
· Localized Data Security — Local persistent storage via UserDefaults, zero network dependency, ensuring complete privacy of your learning data.

Ideal For:
- Language Learners: systematic vocabulary and grammar acquisition
- Students: efficient review of key concepts and formulas
- Professionals: continuously updated industry knowledge and terminology

Technical Architecture: Native SwiftUI development, iOS 17 plus support, Swift 5.9, purely local operation, zero third-party dependencies.


## Version history (last 1 release)

### 1.0 — 2026-05-14

No release notes.

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All apps by 晓 郭: https://appshunter.io/developer/1895645928

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-04.*