Focus Battery helps you understand when you can focus — and when you shouldn't even try.
Download on the App Store
How it works
Grant access to your sleep data. Focus Battery reads sleep duration and stages — nothing else.
Tell the app whether you're an early bird or a night owl. Your body clock shapes your focus windows.
Every morning, see a personalized focus energy curve for the day — peak hours and low-energy dips included.
Schedule deep work during peak focus windows. Save light tasks for low-energy periods. Stop fighting your biology.
FAQ
Focus Battery is a focus tracking app for iPhone that estimates your daily mental energy based on your sleep, chronotype, and screen time — so you know exactly when to do deep work and when to rest.
Yes. Many users with ADHD find it especially helpful because focus energy is harder to predict and manage. The app surfaces your best focus windows so you can plan around them rather than forcing productivity at the wrong times.
Focus Battery reads sleep data from Apple Health with your permission. It never writes to HealthKit, never stores your data on external servers, and never shares it with third parties. Everything stays on your device.
The core focus tracking features are free. An optional Focus Battery Pro subscription unlocks advanced insights and personalization. No ads, ever.
Focus Battery is available on iPhone and requires iOS 16 or later. Download it from the App Store.
The forecast improves as the app learns your patterns over time. It combines sleep quality, your chronotype, and usage data to build a model tailored to your personal energy rhythm.