# Time4Sleep: Sleep Cycles

> Wake up refreshed! Calculate your sleep cycles and avoid morning grogginess

Canonical page: [https://chrome-stats.com/d/com.circleappsstudio.time4sleep](https://chrome-stats.com/d/com.circleappsstudio.time4sleep)

## Overview

- **ID:** `com.circleappsstudio.time4sleep`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Circle Apps Studio
- **Category:** HEALTH\_AND\_FITNESS
- **Downloads:** 113,281
- **Rating:** 3.61 / 5 (1,243 ratings)
- **Version:** 2.8.3
- **Last updated:** 2026-09-11
- **First published:** 2020-08-01
- **Publisher country:** CR
- **Size:** 15 MB
- **Data as of:** 2026-09-25
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.circleappsstudio.time4sleep)
- **Website:** [https://circleappsstudio.com](https://circleappsstudio.com/)
- **Privacy policy:** [https://circleappsstudio.com/Inicio/PoliticaPrivacidad](https://circleappsstudio.com/Inicio/PoliticaPrivacidad)

## Description

**Time4Sleep** is a smart sleep cycle calculator and alarm assistant designed to help you sleep better and wake up feeling refreshed. Calculate ideal times to fall asleep or wake up based on sleep cycles and biological rhythms, helping reduce morning grogginess and sleep inertia.

The app offers a clean, intuitive interface, sleep optimization tips, circadian rhythm guidance, and information about achieving deeper, more restorative rest. Its built-in **AIBrief** AI assistant provides personalized summaries, calming messages, daily sleep suggestions, reflections, and practical recommendations for building healthier nighttime and morning routines. Time4Sleep is ideal for anyone looking to optimize sleep cycles, improve rest quality, and start the day with more energy and focus.

## Rankings

- #209,536 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.WAKE_LOCK`
- `com.android.alarm.permission.SET_ALARM`
- `com.android.vending.BILLING`
- `com.circleappsstudio.time4sleep.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.c2dm.permission.RECEIVE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`
- `com.google.android.providers.gsf.permission.READ_GSERVICES`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.circleappsstudio.time4sleep)