# Fönster: Baby Wake Windows — Sleep Tracker & Nap Schedule > Sleep Tracker & Nap Schedule (iPhone/iPad app by Next Epic Co., Ltd..) - Source: https://appshunter.io/ios/app/fonster-baby-wake-windows/id6807051983 (this page in markdown: same URL + `.md`) - Developer: [Next Epic Co., Ltd.](https://appshunter.io/developer/1775612906) - Category: Health & Fitness, Medical - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 16.4 · 67 MB - Languages: American English, Danish, Finnish, Korean, Norwegian Bokmål, Swedish - Released: 2026-09-01 - Data updated: 2026-11-06 ## What is Fönster? At 3 a.m. you don't want a dashboard. You want one answer: when should they sleep next? Fönster calculates the next sleep window instantly — from age and your own logs, using the age range as a starting point. Didn't fall asleep? One tap recalculates a new window on the spot. No rigid sleep schedule to set up — the wake window is the schedule, tuned to your baby's own bedtime rhythm. A baby tracker that answers instead of asking. No forms. No waiting days. ON YOUR LOCK SCREEN The next window sits on your Lock Screen and Home Screen — you don't even open the app. The countdown updates itself, and when the other parent starts a sleep, your widget says who did it. No notification. Nothing that wakes anyone. BUILT FOR TWO Invite the other parent with a link — no account needed. You see the same log instantly, and either of you can start and end a sleep without "another user" errors. The second caregiver is always included at no extra cost. Grandma can have read-only mode. YOUR DATA IS YOURS Everything lives on your phone first. Export (CSV) works even without a subscription. We never hold old data hostage. No account to create. No ads. LOG ONE-HANDED Sleep, breastfeeding or bottle, diapers and naps with big buttons, in dark mode — built for nights. Logging is free forever — sleep, feeds, diapers, sharing and export. The age-based sleep window is free too, every single day. Pro adds the personalized calculation: windows tuned to your baby's own logs, and the instant recalculation when they don't settle. Your first personalized window is free. After that preview it becomes a subscription: $39.99/year or $7.99/month. The yearly plan starts with a 14-day free trial, then renews automatically unless you cancel in the App Store. Fönster gives general guidance from age and your own logs. It is not medical advice — talk to your pediatrician if you are worried. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | One year | $39.99 | per year | | Monthly | $7.99 | per month | ## Is Fönster safe? Not enough ratings yet to assess Fönster. ## Is Fönster legit? Fönster: Baby Wake Windows appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Fönster is 70 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 5 releases) ### 1.1.5 — 2026-11-04 Fönster now notices when an old sleep window can no longer describe your baby's current rhythm. Add when your baby last fell asleep or woke up, and Fönster calculates a useful window again. We've also improved large-text layouts so the main actions stay reachable on smaller iPhones. ### 1.1.4 — 2026-10-20 Fönster now notices when an old sleep window can no longer describe your baby's current rhythm. Add when your baby last fell asleep or woke up, and Fönster calculates a useful window again. We've also improved large-text layouts so the main actions stay reachable on smaller iPhones. ### 1.1.3 — 2026-10-12 Fönster now notices when an old sleep window can no longer describe your baby's current rhythm. Add when your baby last fell asleep or woke up, and Fönster calculates a useful window again. We've also improved large-text layouts so the main actions stay reachable on smaller iPhones. ### 1.1.2 — 2026-10-03 See your baby’s next sleep window sooner. Setup now asks only for age and what is happening right now, so you can reach a useful answer in moments. Age-based guidance is clearly marked as a starting point. As you log more sleep, Fönster tunes the window from your baby’s real pattern and shows the first personalised result before offering Pro. Inviting another carer is simpler too: send one link and they can join the shared log without typing an invite code or creating an account. We’ve also refined sleep logging, retry states and wording throughout the app for calmer one-handed use at night. ### 1.1.1 — 2026-09-12 Two widgets, on the Lock Screen and the Home Screen: • The next sleep window with a live countdown — without opening the app • Last night: wake-ups and the longest unbroken stretch Night wake-ups are no longer treated as daytime naps. At three in the morning the app says "put them down now" instead of asking you to keep them awake. Tap "Didn't settle" and you can see exactly what the working-out is based on — their own wake windows, the age range as the frame. The app now speaks Swedish, Danish, Norwegian, Finnish, English and Korean. ## Apps similar to Fönster | App | Rating | Price | Category | | --- | --- | --- | --- | | [OH,YOGA](https://appshunter.io/ios/app/ohyoga/id6448233548) | 5.0 (2) | Free | Health & Fitness | | [Baby Heartbeat Monitor App Pro](https://appshunter.io/ios/app/baby-heartbeat-monitor-app-pro/id6762475262) | 3.0 (2) | Free | Health & Fitness | | [고고핑](https://appshunter.io/ios/app/id6499462456) | 5.0 (1) | Free | Health & Fitness | | [Sleep Routine: Tracker&Alarm](https://appshunter.io/ios/app/sleep-routine-tracker-and-alarm/id1620995257) | 3.6 (25) | Free | Health & Fitness | | [BabyNaps: Baby sleep schedule](https://appshunter.io/ios/app/babynaps-baby-sleep-schedule/id1543670476) | — | Free | Health & Fitness | | [Zoezi](https://appshunter.io/ios/app/zoezi/id1447382946) | 1.0 (1) | Free | Health & Fitness | ## More apps by Next Epic Co., Ltd. - [Seven: Social Short Video App](https://appshunter.io/ios/app/seven-social-short-video-app/id6596762805) - [MSG: AI Boyfriend Chat](https://appshunter.io/ios/app/msg-ai-boyfriend-chat/id6736860373) - [Dope Live: AI Fake Stream](https://appshunter.io/ios/app/dope-live-ai-fake-stream/id6738138578) - [推し活ノート帳｜推し活グッズ管理・トレカ・誕生日](https://appshunter.io/ios/app/id6800228259) - [Shimmer: ADE for Deep Work](https://appshunter.io/ios/app/shimmer-ade-for-deep-work/id6828458703) All apps by Next Epic Co., Ltd.: https://appshunter.io/developer/1775612906 --- *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 2026-11-06.*