# Sleep vs Sleep Cycle Bedtime Calculator

The clearest difference is review sentiment: Sleep Cycle Bedtime Calculator at 80% against Sleep's 4%. Sleep Cycle Bedtime Calculator also leads on rating (4.1 vs 3.5) and update cadence (every 3 months vs every 9 months). Sleep's advantage is in-app purchases (none vs 4) and iOS requirement (14.0 vs 18.0). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Sleep Cycle Bedtime Calculator sells 3 in-app purchases, starting at $4.99 per year. Sleep asks for nothing beyond the download.

Sleep Cycle Bedtime Calculator holds the better App Store score, 4.1 against 3.5. Both are backed by a comparable volume of ratings — 80 and 308 respectively. Written reviews point the same way: 4% of Sleep's written reviews are positive against 80% of Sleep Cycle Bedtime Calculator's.

Sleep ships an update every 9 months, Sleep Cycle Bedtime Calculator every 3 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Sleep | Sleep Cycle Bedtime Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (80 ratings)](https://appshunter.io/ios/app/sleep/id1505627600/reviews) | **[4.1 (308 ratings)](https://appshunter.io/ios/app/sleep-cycle-bedtime-calculator/id1668639153/reviews)** |
| Number of ratings | 80 | **308** |
| Positive reviews | 4.2% of reviews | **80.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 1 MB | 35 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Apple Inc.](https://appshunter.io/developer/284417353) | [Kai Oelfke](https://appshunter.io/developer/644779478) |

## What reviewers say

### Sleep

[App page](https://appshunter.io/ios/app/sleep/id1505627600)

This app helps you achieve your sleep goals by tracking sleep stages, providing bedtime reminders, and offering gentle wake-up alarms. It analyzes sleep quality and trends, offering insights to improve your rest and detect potential breathing disturbances.

**Highlights:** Set sleep schedules, Track sleep stages, Monitor sleep score, Wind Down feature, Gentle wake-up alarms, Review sleep insights, Breathing disturbance detection

**Features:** Apple Watch app

**In-app purchases:** none


### Sleep Cycle Bedtime Calculator

[App page](https://appshunter.io/ios/app/sleep-cycle-bedtime-calculator/id1668639153)

This app helps you determine optimal wake-up and bedtime based on sleep cycles. It calculates ideal times to go to sleep and wake up to feel more refreshed, considering the average 90-minute sleep cycle duration. You can also customize your estimated time to fall asleep.

**Highlights:** Calculate optimal wake-up times, Calculate optimal bedtime, Based on 90-minute sleep cycles, Supports 5-6 sleep cycles, Customizable fall asleep time, Apple Watch support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SleepCalc Pro Yearly | $4.99 | per year |
| SleepCalc Pro Yearly | $4.99 | per year |
| SleepCalc Pro | $9.99 | one-time |

**What reviewers like**

- 🆓 Completely free with no ads or data collection
- 👍 Simple and intuitive user interface
- 🎯 Accurate sleep cycle calculations based on 90-minute cycles
- ⚡ Quick and easy to use
- 📊 Shows multiple sleep time options and highlights best choices

**What reviewers complain about**

- 😕 Confusing interface for some users
- 🐛 Unresponsive touch controls reported
- 📉 Lacks visual graphs and data visualization
- ❌ No detailed sleep analysis or insights
- 🔄 Settings reset when app is closed

**Reported bugs**

- Touch screen unresponsive
- App settings reset upon closing
- Alarm goes off at unintended times
- Skips certain time slots in calculations
- Confusing icon similarity with Apple Watch app

**Requested features**

- Add graphs and visual data representations
- Integrate with Apple Health or Fitbit data
- Display number of sleep cycles achieved
- Built-in alarm functionality
- Persist settings when closing app


## Frequently asked questions

### Is Sleep free?

Sleep is free to download, with no in-app purchases.

### Is Sleep Cycle Bedtime Calculator free?

Sleep Cycle Bedtime Calculator is free to download, with in-app purchases available.

### Which has better reviews, Sleep or Sleep Cycle Bedtime Calculator?

Sleep Cycle Bedtime Calculator is rated higher. Sleep averages 3.5 out of 5 from 80 ratings, while Sleep Cycle Bedtime Calculator averages 4.1 from 308 ratings.

### Do Sleep or Sleep Cycle Bedtime Calculator have ads?

Neither Sleep nor Sleep Cycle Bedtime Calculator shows ads.

### Which is updated more often, Sleep or Sleep Cycle Bedtime Calculator?

Sleep ships an update every 9 months, and Sleep Cycle Bedtime Calculator every 3 months. Most recently, Sleep was updated on November 3, 2026 and Sleep Cycle Bedtime Calculator on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*