# Napstar — Calm Sleeptracking for Parents

> Calm Sleeptracking for Parents (iPhone/iPad app by Tim Grethler.)

- Source: https://appshunter.io/ios/app/napstar/id6758551884 (this page in markdown: same URL + `.md`)
- Developer: [Tim Grethler](https://appshunter.io/developer/1873579898)
- Category: Health & Fitness, Lifestyle
- Price: $2.99
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-02-05
- Data updated: 2026-02-23
- User reviews in markdown: https://appshunter.io/ios/app/napstar/id6758551884/reviews.md

## What is 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.


## Version history (last 3 releases)

### 1.2 — 2026-02-10

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

### 1.1 — 2026-02-05

UI/UX Improvements
Changed the iCloud Sharing Settings
Made the App a litte better

### 1.0 — 2026-02-05

No release notes.

## Related topics

[napstar](https://appshunter.io/ios/topics/napstar)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-02-23.*