whentowake vs ZenTime

whentowake tells you the best time to wake up, based on when you are going to sleep. humans sleep in cycles. waking up in the middle of one leaves you groggy and slow. waking up at the end feels natural. whentowake does the math and gives you three options — short, balanced, and full — so you can choose what fits your schedule. open the app. see the times. go to sleep.

ZenTime is the simplest focus timer you'll ever use. No setup. No accounts. No complicated settings. Just tap a duration and get to work. FOUR PRESET TIMERS Choose from 15, 30, 45, or 60-minute focus sessions. Tap any tile to start your countdown instantly. WORKS IN THE BACKGROUND Step away from your phone and stay focused. ZenTime sends you a notification the moment your session ends, even when the app is closed. BEAUTIFUL & MINIMAL Designed to stay out of your way. A clean, dark interface that lets you focus on what matters. REMOVE ADS Enjoying ZenTime? Remove ads with a one-time $0.99 tip. No subscription, no recurring charges. Perfect for studying, deep work, reading, meditation, or any task that deserves your full attention.