🦁 Chronotype Quiz Lion, Bear or Wolf — find your body-clock type. 🔊 White Noise Generator White, pink and brown noise with a sleep timer. 🎂 Sleep Needs by Age Type your age, get your recommended hours. 😴 Snoring & Apnea Check 8-question STOP-Bang risk screening. 🔲 Box Breathing 4-4-4-4 Guided 4-4-4-4 calming exercise. ☕ Coffee Nap Timer Drink coffee, nap 20 min, wake energized. 😴 Sleep Calculator Find the best bedtime or wake-up time using 90-minute sleep cycles. 🛌 Nap Calculator 20-minute power nap or a full 90-minute cycle — wake up refreshed, not groggy. 🧾 Sleep Debt Calculator Log your last 7 nights and get a realistic plan to pay your sleep debt back. ☕ Caffeine Calculator How much caffeine is still in your body at bedtime — and the last safe time to drink. 🌬️ 4-7-8 Breathing A guided animated breathing exercise to calm down and fall asleep faster. 📊 Sleep Quality Quiz 12 quick questions, a 0–100 sleep score, and tips for your weakest area. 🌃 Night Shift Planner A personal sleep, nap, caffeine and light plan built around your shift times. 🍼 Baby Nap Schedule Naps per day, wake windows and ideal bedtime for your baby's age. 🕰️ DST Sleep Plan A 4-day bedtime shift plan so the clock change doesn't wreck your week. ✈️ Jet Lag Calculator Light, caffeine and sleep timing for every direction of travel. 📔 Printable Sleep Diary The week-long log sleep doctors use — print it or fill it in on screen. 📖 Sleep Glossary 40+ sleep terms explained in plain English, from adenosine to wake windows.