# Nemudoki - Baby Sleep Timing — Track sleep, find the next nap

> Track sleep, find the next nap (iPhone/iPad app by Jin Okawa.)

- Source: https://appshunter.io/ios/app/nemudoki-baby-sleep-timing/id6800012056 (this page in markdown: same URL + `.md`)
- Developer: [Jin Okawa](https://appshunter.io/developer/6800012058)
- Category: Health & Fitness
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 35 MB
- Languages: American English, Japanese, Korean
- Released: 2026-09-16
- Data updated: 2026-10-09

## What is Nemudoki?

Thirty minutes. An hour. Still not asleep.

The reason may be when you start. A baby who stays awake too long becomes overtired and fights sleep even harder — and starting too early doesn't work either.

Nemudoki uses your baby's age and your own records to show when the next sleep window is likely to open. Recording takes one tap: asleep, or awake. Open the app and today's sleep is already there.


● One tap to record

Tap "asleep" and "awake." That's all. There are no forms to fill in. The home screen shows today's sleep and what's predicted next.


● Know before it's too late

A notification arrives before naps and bedtime. If you've forgotten to record something, Nemudoki lets you know quietly.


● It follows your baby's rhythm

It starts from what's typical for your baby's age, then adjusts as your records build up.


● Look back

See how total sleep, wake times, and bedtimes have shifted, week by week or month by month. You can go back through past periods to trace how the rhythm has changed.


● Sounds for settling

Rain, waves, a campfire, a heartbeat, womb sounds, and many more.


● Your records stay on your device

No account is required. Your child's sleep records never leave your phone.


● Who it's for

Children from newborn to around three years old. Predictions don't appear before four months, since sleep rhythms haven't settled yet — recording and the sleep history are still available.


● Premium

All features are free for 14 days from install, with no purchase required.

Monthly and yearly subscriptions are available; prices are shown in the app.

Recording, sleep history, multiple children, and reminders for missed records remain free after the trial. Premium adds the next sleep prediction, prediction-based notifications, the summary screen, and every settling sound.

Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. You can manage or cancel anytime in your App Store settings.


Nemudoki is not a medical device. Times shown are estimates. Talk to a doctor about your child's health.


Terms of Use (Apple Standard EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Nemudoki Terms of Service:
https://nemudoki.com/en/terms

Privacy Policy:
https://nemudoki.com/en/privacy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly | $7.99 | per month |
| Yearly | $44.99 | per year |


## Is Nemudoki safe?

Not enough ratings yet to assess Nemudoki.

## Is Nemudoki legit?

Nemudoki - Baby Sleep Timing has limited verification signals. The AppsHunter Legitimacy Score for Nemudoki is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-10-06

We refined the experience after your first sleep record and made the app easier to use.

### 1.0 — 2026-09-16

No release notes.

## Apps similar to Nemudoki

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Kokoro Pocket: Words to Keep](https://appshunter.io/ios/app/kokoro-pocket-words-to-keep/id6756956745) | — | Free | Health & Fitness |
| [SleepTrip: Sleep Stories](https://appshunter.io/ios/app/sleeptrip-sleep-stories/id6541754796) | — | Free | Health & Fitness |

## Related topics

[infant sleep info](https://appshunter.io/ios/topics/infant-sleep-info)

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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 2026-10-09.*