Sleep Cycle Calculator: Sounds

Developer: Phan Nhat Đang

Category: Tools

Add App to Comparison

4K installs

79 ratings

154 monthly active users

$<10K monthly revenue est.

IAP 23% · Ad 77%

Sleep Cycle Calculator: Sounds Summary

Sleep Cycle Calculator: Sounds is a ad-supported, with in-app purchases iOS app in Tools by Phan Nhat Đang. Released in Mar 2023 (3 years ago). It has 79 ratings with a 4.82★ (excellent) average. Based on AppGoblin estimates, it reaches roughly 154 monthly active users and generates around $<10K monthly revenue (23% IAP / 77% ads). Store metadata: updated Feb 22, 2026.

Store info: Last updated on App Store on Feb 22, 2026 .

SDKs, Trackers & Permissions

App not yet scanned for SDKs.

App Details

Store ID: 1669183385

First Released: 2023-03-02

Store Last Updated: 2026-02-22

In-App Purchases: Yes

Ads: Yes

Website: nhatdang.freetzi.com

App Store

Crawl Status: Success

AppGoblin First Crawled: 2023-10-16

AppGoblin Last Crawled: 2026-03-17

Ads & App-Ads.txt

Ads.txt Last Crawled: 2026-03-03

Ads.txt Crawl Status: Success

AppGoblin SDK Scans

App not yet analyzed for SDKs.

The download and scan process is automated but can require manual troubleshooting. Feel free to reach out if your request does not complete in 24hrs or if you have any questions.

4.82★

Ratings: 79

5★

4★

3★

2★

1★

Screenshots

App Description

Improve Your Sleeping Habits with Sleep Timer: Calculator, Sounds
Main Features:
* Sleep Cycle Calculator: Determine the optimal time to go to sleep based on your desired wake-up time and the 90-minute sleep cycle.
* Sleep Duration Calculator: Calculate the best bedtime and wake-up time based on your desired sleep duration.
* Sleep Sounds: Enjoy a variety of sounds designed to help you fall asleep faster and enjoy a deeper, more restful sleep.

SUBSCRIPTION INFORMATION
This subscription package offers users unlimited access to all app features throughout the subscription period.

• Payment will be charged to iTunes Account at confirmation of purchase.
• Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period.
• Account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal.
• Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase.
• Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable.

Privacy Policy: https://13520178.github.io/sleepcalculator/policy.html
Terms of Use: https://13520178.github.io/sleepcalculator/terms.html

Our app is designed to be user-friendly and easy to use. We are always ready to assist you with any questions or requests. Please feel free to contact us:
- phannhatd@gmail.com