mem 2.1.11

Leitner's System is a memory tool devised by Sebastian Leitner in 1972 that makes use of flashcards to memorize words or phrases. It represents a simple application of the principle of spaced repetition, which involves reviewing cards at progressively longer intervals.

The Hand Computer app aims to replicate the Leitner system and serves as an uncomplicated, convenient, and efficient memory aid for language learners or anyone seeking assistance in studying and retaining information from various subjects.

When encountering unfamiliar words, phrases, or equations, users can create cards after memorization and place them in the initial compartment. These cards from the first compartment should be reviewed several times daily. Cards that are remembered should be shifted to the next compartment, while forgotten items should be returned.

After a few days or when the second compartment reaches capacity, a review of those cards is recommended. If any details have been forgotten, they should be moved back to the first compartment. The optimized capacity of each compartment enhances memory recall efficiency, with the frequency of card review progressively increasing as they progress through the compartments for improved learning outcomes.

The final compartment accommodates an unrestricted number of cards; however, periodic reviews are encouraged for optimal retention.

For those interested in exploring this app further, they may consider trying the Cards app developed by the same team behind Hand Computer.

Additional resources for in-depth reading on spaced repetition and the Leitner system are available at:

• Wikipedia - Spaced Repetition
• Wikipedia - Leitner System

Key Features:

• Graphical display of stored cards to provide visual motivation.
• Data stored in a non-proprietary plain text CSV file format.
• Synchronization capabilities using Dropbox to enable document editing on Mac/PC.
• Night Mode feature for reduced eye strain during late-night study sessions.
• Option to listen to words for memory enhancement.

1. Tap the "+" button to access the "Add" page.
2. Select the Camera option.
3. Choose "Scan Multiple Cards" and follow the provided instructions.

Prepare a Mac/PC with Dropbox installed and create a file with words and their respective definitions separated by commas. Save this file in the Hand Computer folder on Dropbox with a CSV extension.

Technical Information:

• The application has been re-written utilizing SceneKit with CAAnimation from version 2 instead of full CALayer + CoreAnimation found in version 1.
• Incorporates 59,000 lines of ObjC code and 6,900 lines of ORIGINAL Swift code.
• Utilizes OpenCL image processing and supports Wacom Intuos Bamboo stylus compatibility via CoreBluetooth.