Peaks

What is Peaks?

Peaks is a circadian rhythm planner that uses your sleep data to show you when to focus, rest, and move, so you stop fighting your body and start working with it.

That afternoon crash isn't random. It's your rhythm. Peaks turns decades of sleep science into a clear daily plan built around your biology.

Key Messages

"Manage your energy, not your time."

"Stop fighting your rhythm, start planning around it."

"No manual tracking. No complicated setup. Just your sleep data, circadian science, and a clear daily plan."

The Problem Peaks Solves

Most people fight through energy dips with coffee, willpower, and guilt. But the crash always wins.

Peaks shows users that their energy fluctuations aren't a flaw, they're a predictable pattern based on their circadian rhythm and sleep pressure. Once you see the pattern, you can plan around it.

How It Works

1. Connect Apple Health If you already track sleep, you're ready. No extra setup required.

2. See your rhythm visualized Updated daily based on how you actually slept.

3. Get personalized timing Peaks tells you when deep work, workouts, coffee, and wind-down work best for your body.

The Science

Peaks uses the two-process model of sleep regulation, combining circadian rhythm with sleep pressure to predict focus, fatigue, and recovery windows. This is the same framework used in aviation and shift-work research for decades.

Core Features

Plan Around Your Energy

• Deep work, timed right See when focus peaks. Protect those hours for what matters.

• Train when your body's ready Schedule workouts for when energy and coordination are highest.

• Skip the crash See dips coming. Plan breaks or lighter tasks before they hit.

• Sleep better Know when to stop eating, dim screens, and wind down.

Understand What's Working

• Track sleep duration, timing, and quality over time

• See how HRV and heart rate connect to your energy

• Track sleep debt and watch it clear as you recover

• Build consistency that strengthens your rhythm

Fits Your Life

• Widgets See your energy at a glance on Home Screen or Lock Screen

• Apple Watch Check current energy and upcoming windows from your wrist

• Calendar integration Overlay energy windows with your schedule

• Shortcuts support Automate your day around your rhythm

• Jet lag support Personalized guidance for time zone shifts (coming soon)

Privacy

Health data never leaves your iPhone. No sign-ups, no third parties. Peaks works entirely offline.

What People Are Saying

"This app has a simple purpose, present information about my sleep and energy levels in a way that I can understand. Goal achieved." App Store Review

"Perfect companion to make most of my time by helping me adjust types of work to specific cycles in my circadian rhythm." App Store Review

"I've been using this app for years and it predicts my rhythm and helps me better understand my energy levels." App Store Review

About Us

Peaks is made by Florian and Clemens, two friends from Vienna who build software they'd want to use themselves.

Our principles:

• We build for clarity, not engagement

• Your data stays on your device, we don't track, sell, or even want to know who you are

• No investors, no growth targets, just software that lasts

• We optimize for the person who tells a friend, not the metric that impresses investors

Quick Facts