ZzzBank vs Nayri

Track your sleep, borrow when needed, and repay with rest ▶ Borrow Sleep Too busy to rest? Borrow sleep to stay focused. ▶ Repay Sleep Pay back every hour you’ve borrowed. Tap the notification to check your updated sleep data. ▶ Sleep History View all your borrow and repay records. ▶ Meet Pebby Your buddy changes with your sleep status. Inspired by the “Sleep Bank” episode from the webtoon "Lee Mal-nyeon series". Special thanks for the inspiration.

Nayri is not another collection of rain sounds, bedtime stories, or endless meditations. It is a sleep trainer designed to help you build better sleep habits using clinically grounded methods and practical techniques. Instead of trying to force sleep, Nayri helps you work with the mechanisms behind it: sleep timing, sleep pressure, mental arousal, breathing, and the habits your brain associates with bedtime. Personalized sleep window Start with a few simple questions about your usual sleep. Nayri creates an initial sleep window and adjusts it as you track your nights. See your sleep efficiency, time to fall asleep, recent nights, and how your sleep window changes over time. Breathing exercises Use guided breathing when your body feels too alert for sleep. Practice techniques such as physiological sighs, 4-7-8 breathing, box breathing, and longer exhales, with simple visual and haptic guidance. Cognitive shuffling When your mind keeps jumping between plans, memories, and worries, give it something else to do. Nayri can speak random, unrelated words one at a time, helping interrupt repetitive chains of thought without giving you another story to follow. Choose the pause between words and let the session continue for as long as you need. Unload your thoughts Write down whatever is still occupying your mind before bed. Separate worries, things to handle tomorrow, and passing thoughts. Turn unfinished tasks into a simple evening checklist so you do not have to keep rehearsing them in your head. Your notes stay on your device. Understand your sleep. Nayri includes short articles explaining the mechanisms behind sleep and insomnia in plain language. Learn about sleep pressure, the body clock, conditioned wakefulness, common sleep myths, and why trying harder to sleep can sometimes make sleep more difficult. A program that adapts to you Track your nights and see how your sleep changes over time. Nayri uses your sleep diary to help refine your sleep window and turn individual techniques into a consistent nightly routine. No account required Nayri is designed to be quiet, private, and focused. No social feed. No chatbot pretending to be your therapist. No complicated setup. No need to create an account. Just practical tools for better nights. Sleep is not something you can force. But it is something you can train for.