Sleep Calculator App vs BedtimeLullaby
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sleep Calculator App
Optimize your sleep by calculating ideal bedtime and wake-up times based on natural 90-minute sleep cycles. Includes relaxing sounds and meditation to help you fall asleep faster and wake up feeling refreshed.
- Calculate best bedtime
- Calculate best wake-up time
- Select desired wake-up time
- Relaxing sounds
- Sleep meditation
- No registration required
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A good day starts with a good night! Go to bed at the right time and wake up between your natural 90-minute sleep cycles to feel rested and refreshed. A good night's sleep consists of 3 to 6 complete cycles. ◦ Calculate your best bedtime ◦ Calculate your best wake-up time ◦ Select when you want to wake up ◦ Relaxing sounds and sleep meditation to help you fall asleep faster. The average person takes about 15 minutes to fall asleep. If you wake up at one of the calculated times, you'll wake up between 90-minute sleep cycles. The Sleep Calculator app helps you decide when to go to sleep so you can wake up at a specific time and ensure a good night's rest, or what time you should wake up if you want to go to sleep right now. Completely free app. No registration required. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://scannercalorieios2024.web.app/
BedtimeLullaby
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Bedtime sleep timer with lullabies.
Screenshots
Verdict
The clearest difference is in-app purchases: BedtimeLullaby at none against Sleep Calculator App's 1. BedtimeLullaby also leads on ads (none vs shown) and update cadence (every 3 months vs every 8 months). On price, device support and iOS requirement 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 Calculator App sells 1 one-off in-app purchase. BedtimeLullaby asks for nothing beyond the download.
Sleep Calculator App ships an update every 8 months, BedtimeLullaby every 3 months. The most recent releases landed on October 21, 2026 and October 28, 2026 respectively.
| Parameter | Sleep Calculator App | BedtimeLullaby |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 8 months | Every 3 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 31 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Luz Ochoa | Brandon Hall |
In-app purchases
Sleep Calculator App
- Lifetime Premium Subscription$6.99
BedtimeLullaby
No in-app purchases
Questions
Is Sleep Calculator App free?
Is BedtimeLullaby free?
Do Sleep Calculator App or BedtimeLullaby have ads?
Which is updated more often, Sleep Calculator App or BedtimeLullaby?
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