SleepTimer vs SleepCycle

Fall asleep relaxed. We'll take care of the rest. SleepTimer is your smart companion for a perfect night's sleep. Do you like to fall asleep to videos, podcasts, audiobooks, or relaxing music? Are you worried that your iPhone will run all night, drain the battery, or wake you up later? SleepTimer solves this problem. The app automatically pauses all your media, gently dims the screen, and locks your iPhone—all fully automatically after your desired time. Your advantages at a glance: - No more dead batteries: Your iPhone turns off when you sleep. - Undisturbed sleep: No sudden noises or bright lights in the middle of the night. - Full control: Use YouTube, TikTok, Apple Music, Spotify, or your favorite podcast app. Top features: Flexible timers: Choose between 5 and 120 minutes or set a custom time. Media stop: Reliably pauses music, videos, and streams. Gentle dimming: Reduces brightness shortly before the end to protect your eyes. Auto-lock: Securely locks the screen. Shortcuts integration: Harness the power of Apple Shortcuts for maximum background reliability. Perfect for: - Falling asleep with audiobooks (Audible, etc.) - Meditation and white noise for relaxation - Watching videos in bed (YouTube, TikTok) It's that simple: Select the duration. Activate the desired actions (pause, dim, lock). Press start and relax! Note: To use the advanced system functions (lock & dim), the app installs the necessary Apple shortcuts.

SleepCycle Calculator helps you find the ideal time to go to sleep or wake up — based on real sleep science. Built around the 90-minute sleep cycle model, the app calculates optimal bedtimes and wake-up windows so you always rise at the lightest stage of sleep, feeling alert and refreshed. WHETHER YOU SET A WAKE TIME OR SLEEP NOW • Wake-Up Mode: Enter your desired wake-up time and the app calculates 4–6 ideal bedtimes working backwards in 90-minute cycles, plus a 14-minute fall-asleep buffer. • Sleep Now Mode: Tap "Sleep Now" and the app instantly calculates your best wake-up times based on the current time. BUILT-IN SMART ALARM • Tap any suggested time to set it as your alarm instantly. • Choose from 6 soothing alarm sounds: Gentle Bells, Forest Birds, Ocean Waves, Digital Beep, Soft Chime, and Cosmic Hum. • Preview sounds before selecting. • Dismiss or snooze (9 minutes) when the alarm fires. • Push notifications ensure your alarm fires even when the app is in the background. SLEEP HISTORY & TRACKING • Every dismissed alarm automatically logs a sleep session — bedtime, wake time, duration, cycle count, and quality rating. • View your sleep history on an interactive calendar with color-coded indicators. • Track 7-day and 30-day sleep averages, your best night, and total nights logged. • Weekly bar chart shows sleep duration at a glance. SLEEP SCIENCE EDUCATION • Learn what a sleep cycle really is and why timing matters. • Explore the 4 sleep stages (N1, N2, N3, REM) with durations and biological functions. • Understand the 90-minute rule and the 14-minute sleep onset latency formula used by this app. • Science-backed sleep tips on room temperature, blue light, caffeine, and more. • 7 tappable references to peer-reviewed sources including the Sleep Foundation, NIH, and Harvard Health. BEAUTIFUL DESIGN • Deep indigo night-sky aesthetic inspired by Apple's bedtime design language. • Color-coded quality labels: Optimal, Great, Good, and Light for each sleep option. • Smooth animations, haptic feedback, and a breathing moon animation for a calming experience. SleepCycle Calculator is perfect for anyone who wants to stop waking up groggy and start waking up energized — backed by science, not guesswork. Note: A medical disclaimer is included in the app. This app is not intended to diagnose or treat sleep disorders. For serious sleep concerns, please consult a healthcare professional. PREMIUM ACCESS Try SleepCycle Pro free for 14 days. After the trial, unlock full lifetime access for a one-time purchase of $19.99 — no subscription, ever. Premium features include personalized sleep insights, full history tracking, and all future updates.