How to use black and white card: 1. Hold the card about 30cm away from the baby. 2. Slow movement causes the baby to follow. 3. Switch to the next card after the baby sees the card.
Black and white card training time: 1. Use 5 to 10 cards at a time. 2. Train no more than 5 times a day and no more than 15 minutes.
Notes for black and white cards: 1. Use it when your baby is in good physical and mental state. 2. Once the baby is in bad condition, stop immediately.
Updated on
Aug 11, 2025
Tools
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Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties