NapSense vs NapBoost
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
NapSense
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Set a 20-minute nap and an ordinary timer starts counting the moment you press it. Spend twelve minutes falling asleep and you get eight minutes of rest. NapSense waits. It watches for your phone to go still, and only then does the countdown begin. The nap you set is the nap you get. HOW IT WORKS 1. Choose how long you want to nap, anywhere from 5 to 60 minutes. 2. Keep using your phone. Watch something, scroll, whatever helps you wind down. 3. When you drift off and the phone stops moving, NapSense starts the timer. 4. The alarm wakes you at the end of the nap you actually asked for. WHAT YOU GET โข Sleep detection. The countdown starts when you do, not when you press start. โข Four white noise tracks: rain, ocean, pure rain, and midnight ambience. โข Live Activities. Detection status and countdown on the Lock Screen and Dynamic Island, iPhone 14 Pro and later. โข Alarms that work on silent. Pick a sound, set the volume, and test it before you lie down. โข Nap history. Every nap you have taken, how long it took to drop off, and how long you slept. WHERE TO PUT YOUR PHONE On the mattress beside you, or in your hand. A phone on a nightstand never moves at all, so NapSense reads that as sleep the moment you set it down and starts counting early. IN A HURRY If you know you will be out in seconds, skip detection and start the countdown yourself. NapSense is free. One purchase removes ads and unlocks your nap history. There is no subscription, nothing renews, and there is nothing to cancel. No account. No sign-up. Your naps stay on your phone and are never uploaded. --- Note: Not a medical device. For rest and wellbeing, not for diagnosis or treatment.
NapBoost
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Your Ultimate Smart Recovery Companion Unlock the true power of a perfect nap. NapBoost is not just another timer - it is a smart recovery tool designed to wake you up feeling refreshed, energized, and ready to conquer the day. No more grogginess or sleep inertia. Say goodbye to manual alarms. By seamlessly integrating with Apple Health, your Apple Watch, and Whoop, NapBoost automatically detects the exact moment you fall asleep. It dynamically adjusts your wake-up time based on your target sleep duration and current sleep cycle. CORE FEATURES: - Smart Sleep Detection: Put your phone down and close your eyes. NapBoost listens to your Apple Watch or Whoop via HealthKit, starting the countdown only when you actually fall asleep. - Optimal Waking (AI Mode): The Smart Nap feature ensures you are woken up during the lightest phase of sleep, preventing that heavy, groggy feeling. - Wearable Integration: Flawlessly pairs with your Apple Watch and Whoop strap. Monitor your live heart rate and recovery stats right on the screen. - Haptic & Gentle Alarms: Wake up gracefully with our custom sunrise alarms and soothing haptic feedback. - Nap Journal & Recovery: Track your daily naps, measure your efficiency, and watch your daily recovery score improve over time. - Pre-Nap Rituals & Soundscapes: Prepare your mind and body with built-in blackout tips and relaxing soundscapes. Note: NapBoost integrates directly with HealthKit to provide smart sleep tracking and heart rate monitoring.
Screenshots
Verdict
The clearest difference is ads: NapBoost at none against NapSense's shown. NapBoost also leads on device support (3 vs 1). NapSense's advantage is iOS requirement (17.0 vs 26.2). On price and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. NapSense sells 1 one-off in-app purchase and NapBoost sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | NapSense | NapBoost |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | โ |
| Ads | Yes | No โ better |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad, Apple Watch โ better |
| Requires iOS | 17.0 โ better | 26.2 |
| Further details โ not scored | ||
| Size | 18 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | CHI-YU WU | Kirill Timofeev |
In-app purchases
NapSense
- NapSense Pro$4.99
NapBoost
- NapBoost Premium Lifetime$8.99








