MemFlip Cards

MemoryFlip is a structured working-memory trainer in the format of a classic match-the-pairs card game. Built for repeatable daily practice, with measurable progress.

SCORING MODEL
Final score = pairs × 100 × difficulty multiplier − time penalty (sec × 2) − excess move penalty (extra moves × 5). Every session is logged with theme, difficulty, time, moves and score, so you can compare runs over time and observe genuine improvement.

DIFFICULTY TIERS
• Easy — 3×4 board, 6 pairs, multiplier ×1
• Medium — 4×4 board, 8 pairs, multiplier ×2
• Hard — 5×6 board, 15 pairs, multiplier ×3
• Expert — 6×6 board, 18 pairs, multiplier ×5

CARD DECKS (THEMES)
Animals · Fruits · Emoji · Vehicles · Sports · Nature.
Each deck provides up to 36 distinct symbols; symbols are randomly sampled and shuffled per session to prevent positional memorization.

CORE FEATURES
• Pre-game preview phase to encode the layout
• Real-time HUD: timer, move counter, pair progress
• Pause / resume / restart at any moment
• Personal best per (theme × difficulty) combination
• Full session history (last 100 sessions)
• Optional sound effects and haptic feedback
• Light / Dark / System appearance
• Localized in English and 简体中文

PRIVACY & PERFORMANCE
• 100% offline. No account, no signup, no network calls
• No ads, no in-app purchases, no third-party SDKs
• No analytics, no telemetry, no tracking
• Data stored locally via UserDefaults; deleted with the app
• iPhone-only, optimized for iOS 17+
• Minimal install footprint, instant launch

USE CASES
• 3-minute cognitive warm-up before deep work
• Family-friendly play for children and elders
• ADHD / focus self-training between tasks
• A pure, distraction-free card game on your iPhone

Download MemoryFlip and start measuring your memory.