# Sleep Calculator + — Find Your Perfect Sleep Time

> Calculates optimal sleep and wake times based on sleep cycles. (iPhone/iPad app by ICSR Tech LLC.)

- Source: https://appshunter.io/ios/app/sleep-calculator-plus/id6748312559 (this page in markdown: same URL + `.md`)
- Developer: [ICSR Tech LLC](https://appshunter.io/developer/1878198681)
- Category: Reference, Health & Fitness
- Price: Free (on sale, was $0.99)
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 1 MB
- Languages: American English, Arabic, French (France), German (Germany), Italian, Japanese, Korean, European Portuguese, Russian, Chinese (Simplified, China) and 1 more
- Released: 2025-07-08
- Data updated: 2026-09-06
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/sleep-calculator-plus/id6748312559/reviews.md

## What is Sleep Calculator +?

Say goodbye to groggy mornings! Calculate optimal bedtime and wake-up times based on scientific 90-minute sleep cycle theory.

** Core Features:**
• Smart calculation of optimal sleep times
• Beautiful night-friendly interface
• Supports 11 languages
• Perfect for iPhone and iPad
• Professional sleep advice

** Why Choose Us:**
  · Scientific Algorithm - Based on authoritative sleep research
  · Simple Operation - Two steps setup, instant recommendations
  · Precise Calculation - Accounts for fall-asleep time
  · Global Support - Complete multi-language localization

Wake up refreshed during light sleep phases, say goodbye to deep sleep grogginess!

** Perfect For:**
Students, professionals, parents, fitness enthusiasts, frequent travelers

Download now and start your scientific sleep journey!

## Key features

- Optimal sleep time calculation
- 90-minute sleep cycle theory
- Night-friendly interface
- Professional sleep advice
- Accounts for fall-asleep time
- Supports 11 languages

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/sleep-calculator-plus/id6748312559/reviews.md

### 5/5 — Simple and Accurate Sleep Companion

*2025-08-14*

Sleep Calculator has completely changed the way I manage my sleep schedule. It accurately calculates the best wake-up times based on when I go to bed, so I wake up feeling refreshed of groggy. The interface is clean and intuitive, with no annoying ads or unnecessary features. I essentially love the gentle reminders that help me prepare for bedtime. If you want to improve your sleep quality and feel more energized in the morning, this app is a must-have!

## Frequently asked questions about Sleep Calculator +

### How does Sleep Calculator + determine my perfect sleep time?

Sleep Calculator + uses a scientific 90-minute sleep cycle theory to calculate optimal bedtime and wake-up times. It accounts for your estimated fall-asleep time to ensure you wake during a light sleep phase.

### What devices is Sleep Calculator + compatible with?

Sleep Calculator + is designed for both iPhone and iPad devices, offering a seamless experience across Apple's mobile platforms.

### Does Sleep Calculator + have ads?

No, Sleep Calculator + is ad-free, providing an uninterrupted experience for users focused on improving their sleep.

### How often is Sleep Calculator + updated?

The app was last updated on July 11, 2025, indicating active development and support from the developers. This suggests regular updates for improvements and bug fixes.

### What is the age rating for Sleep Calculator +?

Sleep Calculator + has an age rating of 4+, making it suitable for a wide range of users interested in sleep optimization.

### Can I use Sleep Calculator + offline?

While the description doesn't explicitly state offline functionality, the core calculation based on sleep cycles and user input is likely to function without an internet connection. However, features like accessing professional sleep advice might require connectivity.

### What languages does Sleep Calculator + support?

Sleep Calculator + offers global support with full multi-language localization, including 11 different languages to cater to a diverse user base.

### What do users like about Sleep Calculator +?

Based on the single rating available, users have given Sleep Calculator + a perfect 5.0 stars. This suggests a high level of satisfaction with its scientific algorithm, simple operation, and precise calculations.

## Version history (last 2 releases)

### 1.0.2 — 2025-07-11

improve user experience

### 1.0.0 — 2025-07-08

No release notes.

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All apps by ICSR Tech LLC: https://appshunter.io/developer/1878198681

## Related topics

[sleep calculator plus](https://appshunter.io/ios/topics/sleep-calculator-plus)

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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 2026-09-06.*