# Sleep Cycle Bedtime Calculator vs Refresh

The clearest difference is in-app purchases: Refresh at none against Sleep Cycle Bedtime Calculator's 4. Refresh also leads on update cadence (every 10 days vs every 3 months) and iOS requirement (11.0 vs 18.0). On price, ads 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. Refresh asks for nothing beyond the download.

Sleep Cycle Bedtime Calculator ships an update every 3 months, Refresh every 10 days. The most recent releases landed on September 29, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Sleep Cycle Bedtime Calculator | Refresh |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (289 ratings)](https://appshunter.io/ios/app/sleep-cycle-bedtime-calculator/id1668639153/reviews)** | — |
| Number of ratings | **289** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | Free | — |
| Size | 28 MB | 49 MB |
| Requires iOS | 18.0 | **11.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Kai Oelfke](https://appshunter.io/developer/644779478) | [Refresh Technology Co., Ltd.](https://appshunter.io/developer/1681088991) |

## What reviewers say

### 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


### Refresh

[App page](https://appshunter.io/ios/app/refresh/id6447372457)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sleep Cycle Bedtime Calculator free?

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

### Is Refresh free?

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

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

Neither Sleep Cycle Bedtime Calculator nor Refresh shows ads.

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

Sleep Cycle Bedtime Calculator ships an update every 3 months, and Refresh every 10 days. Most recently, Sleep Cycle Bedtime Calculator was updated on September 29, 2026 and Refresh on September 9, 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.*