Wake Up When Your Body Is Ready

A smart power nap timer based on your heart rate.

Focused on What MattersNo gimmicks, no subscription, no distractions.PowNap is a clear, focused tool for those who want to disconnect and recharge – effectively.

  • Detects sleep onset through your heart rate

  • Wakes you gently at the right time

  • Choose your nap length with one tap – 15, 20, or 25 minutes.

  • Or use Infinity Mode – open-ended naps with no time limit. PowNap wakes you gently when your body signals it’s had enough rest.

  • Fully offline – runs directly on your Apple Watch

Gentle. Reliable. Precise.You press “Start” – PowNap does the rest.If you choose a set duration, discreet dot indicators show your nap progress in 5-minute segments. If you don’t fall asleep, a gentle vibration will end the nap after the full time.If your heart rate drops – a sign that your body is settling into sleep – PowNap wakes you sooner, right at the optimal point.Want full flexibility?Use Infinity Mode when your body needs more than a countdown. No timer – PowNap waits for your heart to show it’s time.
Ideal for deep recovery, exhaustion, or burnout.

Prefer a softer wake-up? Or need it stronger?You can adjust the vibration intensity to your liking – and fine-tune the heart rate threshold that detects sleep.Prefer not to adjust anything? PowNap can automatically adapt to your resting heart rate.The app stays intuitive and distraction-free – no menus, no clutter. Just rest.

One-Time Purchase – And Peace of Mind

  • No subscription

  • No ads

  • No registration

  • No data collection

  • 100% private – all data stays on your Apple Watch.

No more guessing the perfect nap length – PowNap ensures you wake up refreshed.

Who is PowNap for?

Let PowNap take the guesswork out of your power naps.

How it Works

Heart Rate-Based Wake-Up
PowNap monitors your heart rate in real time and detects when it drops below your personal sleep threshold — a clear signal your body has begun to rest. That’s when the nap truly starts.Nap Duration & Infinity Mode
Select your preferred max duration: 15, 20, or 25 minutes — with just one tap.
Or switch to Infinity Mode: no time limit, no countdown. The app will end your nap gently as soon as your body shows signs of recovery.Dot-Based Progress
No ticking clock. Instead, PowNap uses quiet visual markers — one dot per 5 minutes — to show how far along you are.Nap History & Heart Rate Chart
Each nap is stored locally on your watch. View a detailed heart rate chart for every session to track your rest quality and patterns.
Swipe to delete naps. Store up to 30 entries.Sensitivity & Threshold Settings
Customize how the app detects sleep:
• Set your own heart rate threshold manually
• Or let PowNap adapt automatically to your resting heart rateAdjustable Vibration Strength
Choose between Soft, Medium, Strong, or Gradual wake-up intensity — so the end of your nap never feels abrupt.100% Local – Private by Design
PowNap runs fully offline on your Apple Watch.
No account. No ads. No tracking.
Optionally sync your naps to Apple Health if you choose.Note on Activity Rings
To monitor your heart rate accurately, PowNap uses a background workout session. This may slightly influence your Activity Rings — even though no actual workout is saved.

Try it today and nap smarter!

Story & Support

Built with AI. Grounded in Rest.PowNap was created by a solo developer with no prior coding experience – built entirely in SwiftUI with the help of ChatGPT.From idea to execution, every feature was developed in conversation with AI: refining logic, resolving bugs, shaping user experience. The result is a fully independent, privacy-first tool that turns Apple Watch’s native capabilities into something surprisingly personal.No funding. No team. Just a deep need for calm, and a willingness to build it.Got questions, feedback, or ideas for improvement?Support[email protected]

Privacy Policy for PowNap

Effective Date: March 20, 2025
Last updated: April 4, 2025⸻1. General InformationPowNap uses your heart rate to determine the optimal time to wake you up during a power nap. Protecting your data is our highest priority. This privacy policy explains what data we collect, how we use it, and what your rights are regarding that data.⸻2. Contact InformationIf you have any questions or requests related to privacy, feel free to contact us:
📧 Email: [email protected]⸻3. Collection and Use of Personal Data3.1 Health Data (HealthKit)PowNap uses Apple HealthKit to access and optionally write nap-related data. All processing takes place locally on your device. PowNap never uploads, shares, or stores health data outside of your device.Data read from HealthKit:
✔ Heart rate (bpm) – Used to detect when you fall asleep and to wake you up at the right time.Data written to HealthKit (optional):
✔ Nap duration – If enabled in the settings, PowNap writes the duration of each nap to the Sleep category in your Health app.You can disable access to HealthKit at any time in your iPhone’s settings. PowNap does not access or write any other HealthKit data.3.2 App Analytics and Error Reports✔ PowNap does not collect personal data for advertising or user tracking.
✔ If you choose to send us an error report, it may include anonymous technical information, but never personal or health data.⸻4. Data Sharing❌ PowNap does not share any data with third parties.
❌ No data is transmitted to external servers or stored in iCloud.
❌ No data is used for marketing or behavioral analytics.
✔ All data remains 100% local on your Apple Watch and iPhone.⸻5. Your RightsYou have the following rights regarding your data:
• Access: You can view your nap data directly in the app or in the Health app (if enabled).
• Deletion: You can delete your nap history at any time from within the app.
• Control: You can disable HealthKit access at any time via the iOS system settings.To make a request or ask a question, contact us at: [email protected]⸻6. Changes to This Privacy PolicyWe may update this privacy policy to reflect functional or legal changes. The current version is always available in the app under:
Settings → Privacy