Napstar
Tim Grethler Health & Fitness iPhoneiPadiPod touch
Napstar is a paid Health & Fitness app for iPhone and iPad by Tim Grethler. Requires iOS 17.0. Updated February 10, 2026.
- Price
- 2.99 USD
- on the App Store
- Size
- 1 MB
- Age 4+
- Updated
- Feb 10
- 2026 · v1.2
Screenshots
About Napstar
Tap to start sleep. Tap to end it. That's the core of Napstar. Based on your baby's age and sleep patterns, Napstar shows you the optimal window for the next nap—displayed as a range, not a single minute, because babies aren't robots and neither are you. **Features** • Wake window guidance based on your baby's age (Adjustable for preemies) • Night sleep tracking with optional feeding log • Visual day timeline showing sleep patterns at a glance • Weekly insights and sleep trends • Sleep status indicator—is your baby getting enough rest? • Partner sharing via iCloud—both parents see the same data • Caregiver handoff—quick summary screen for babysitters • Export sleep reports for your pediatrician (PDF or CSV) • Siri shortcuts: "Hey Siri, start nap in Napstar" • Home screen widget for quick status checks • Gentle notifications when nap windows open **Built for one-handed use** Big tap targets. Dark mode that won't blind you at 3am. Every interaction designed for a parent holding a baby. **Your choice: Privacy or sync** Keep all data on your device only, or use iCloud to sync across devices and share with your partner. You decide during setup, and you can change your mind later. **Adjusted age support** If your baby was born premature, Napstar calculates recommendations based on their adjusted age—because development milestones matter. **What Napstar isn't** This isn't a sleep training app. We don't tell you how to get your baby to sleep. We don't judge your choices. We just help you see patterns and catch the right windows.
What’s new
Version 1.2 · Updated February 10, 2026
What's New in Version 2.0 Smarter Recommendations Napstar now learns from your baby's sleep patterns in a more nuanced way. The algorithm considers: - How easily your baby fell asleep - Whether they woke up calm or fussy - Recent patterns weighted more than older ones - Natural variation in your baby's rhythms Confidence-Aware Ranges Recommendations now show wider ranges when patterns are variable, and tighter ranges as consistent patterns emerge. This gives you honest guidance rather than false precision. How It Works New explainer in Settings walks through how recommendations are personalized—written in calm, supportive language with no judgment about "good" or "bad" sleeps. Under the Hood - Algorithm improvements inspired by leading sleep tracking research - Better handling of varied sleep patterns - More accurate wake window predictions as you track more sessions
App privacy
The developer, Tim Grethler, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Napstar | – | 2.99 USD | February 10, 2026 | |
| DOCTOR clinix | – | Free | Oct 8, 2025 | Compare |
| Gym Workout Planner: BodyPeak | 3.7 / 5 (3) | Free | Jan 27, 2025 | Compare |
| Gymsight - Workout Tracker | – | Free | Jan 28, 2024 | Compare |
| RESONATE Sound Bath | 5.0 / 5 (7) | Free | Aug 26, 2026 | Compare |
| NYSORA Pain Medicine Assistant | 4.9 / 5 (47) | Free | Oct 22, 2026 | Compare |
| NYSORA VetRA | 4.8 / 5 (18) | Free | Oct 19, 2026 | Compare |
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