← Back to Focus & Attention

1-Back Letters

A stream of letters appears. Tap the input and press the keyboard when the letter matches the previous one.

✅ Hits: 0
⚠️ False: 0
(Space / any key triggers response)

🧩 Recommended Brain Training Books & Memory Games

Affiliate Disclosure: This section contains affiliate links. As an Amazon Associate, we may earn a small commission from qualifying purchases at no extra cost to you. This helps keep the site free and enjoyable for everyone.

Health Disclaimer: Information on this site is for educational purposes only and is not medical advice. Always consult a qualified healthcare professional before starting any new supplement.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.*

IQ Puzzler Pro
Portable 2D/3D puzzle set with 120 challenges for deep logical thinking.
View on Amazon
CHAMPKEY Hand Eye Trainer
Durable foam training tool that improves reflexes, hand-eye coordination, and warmup routines.
View on Amazon
Genius Mushrooms
Caffeine-free Lion’s Mane, Cordyceps, and Reishi formula for natural energy and mental clarity.
View on Amazon