Sleep Time Calculator

Name: Sleep Time Calculator
Rating: 3.8 (23 reviews)
Author: Recked Software LLC

By: Recked Software LLC

Get the sleep you deserve

Features & Capabilities

Know the best possible times to wake up with this free app.

The five stages of sleep, including their repetition, occur cyclically. The first cycle, which ends after the completion of the first REM stage, usually lasts for 90 minutes.

With 8 hours of sleep you typically go through 4-5 cycles a night. Waking up in the middle of a cycle leaves you feeling groggy, but waking up at the end of a cycle leaves you feeling awake and alert. This app gives you recommendations on when to wake up in the morning to decrease the likelihood that you will feel groggy.

User Growth & Download Statistics

App

By:

Recked Software LLC

Rating:

3.80

(23)

Version:

2.0.1 Last updated: 2017-11-07

Version code:

841427871

Creation date:

2013-02-26

Compatible devices:

Size:

54.59MB

URLs:

Website

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-07

Compare stats and ranking:

Ranking

# 287,714 ▲ 923

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

Recked Software LLC

Apple Apps Store

https://apps.apple.com/us/app/sleep-time-calculator/id606077861

Website:

https://madewithmustard.com/sleepcalculator

User Reviews

Users praise the app for its simplicity, free access, and sleep-cycle based bedtimes with reminders, plus usefulness for naps and irregular schedules. Recurrent drawbacks include nonworking wake-time setup, persistent UI banners and update issues, a perceived heavy subscription model, long startup splash screens, and limited customization (sleep time options) with unclear total sleep time display.

Pros

Simple and easy to use
Free to use / no unnecessary bells and whistles
Predicts bedtimes using sleep-cycle timing
Includes a reminder to go to bed
Useful for naps and variable schedules (e.g., shift work)

Cons

Wake-up time feature often doesn’t work / can’t set wake time
UI issues: when editing times, the banner stays/persists and updates are not reflected
Subscription pricing referenced (perceived as expensive)
Long splash screens on startup delaying access
Limited customization options (no ability to adjust sleep time to fall asleep or number of cycles) / total sleep time not clearly shown