Sleep Cycle Bedtime Calculator vs Refresh
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sleep Cycle Bedtime Calculator
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.
- 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
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Sleep smarter. Feel more refreshed. Calculate the best time to wake up or when to go to bed. It's based on sleep cycles. They're about 90 minutes each and it's good to get 5-6 cycles. Sleeping at midnight for 5 cycles? Wake up at 7:30 AM. Need to wake up at 6:00 AM, but want 6 cycles? Then hit the bed at 9:00 PM. Not falling asleep immediately? Customize your fall asleep time. PS: Most people need ~ 15 minutes to fall asleep. - Apple Watch support - Customize time to fall asleep Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Refresh
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Refresh 手环控制APP,检测身体状况
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Sleep Cycle Bedtime Calculator | Refresh |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (289 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 289 — better | — |
| Update frequency | Every 3 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 18.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 28 MB | 49 MB |
| Age rating | 4+ | 17+ |
| Developer | Kai Oelfke | Refresh Technology Co., Ltd. |
Bugs and requests
Sleep Cycle Bedtime Calculator
Reported bugs
5 issues- 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
9 requests- 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
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- Multi-language support
- Detailed sleep analysis and personalized insights
- Larger, more detailed charts for phone display
- Calculate wake time from current time
Refresh
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sleep Cycle Bedtime Calculator
- SleepCalc Pro Yearly3 Days trial$4.991 Year
- SleepCalc Pro Yearly$4.991 Year
- SleepCalc Pro2 variants$9.99
Refresh
No in-app purchases
Questions
Is Sleep Cycle Bedtime Calculator free?
Is Refresh free?
Do Sleep Cycle Bedtime Calculator or Refresh have ads?
Which is updated more often, Sleep Cycle Bedtime Calculator or Refresh?
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