# Sleep Calculator App vs BedtimeLullaby

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.

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.

## The numbers

| Metric | Sleep Calculator App | BedtimeLullaby |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/sleep-calculator-app/id1608356513/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 23 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Luz Ochoa](https://appshunter.io/developer/1508017518) | [Brandon Hall](https://appshunter.io/developer/1816617511) |

## What reviewers say

### Sleep Calculator App

[App page](https://appshunter.io/ios/app/sleep-calculator-app/id1608356513)

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.

**Highlights:** Calculate best bedtime, Calculate best wake-up time, Select desired wake-up time, Relaxing sounds, Sleep meditation, No registration required

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Premium Subscription | $6.99 | one-time |


### BedtimeLullaby

[App page](https://appshunter.io/ios/app/bedtimelullaby/id6746683511)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sleep Calculator App free?

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

### Is BedtimeLullaby free?

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

### Do Sleep Calculator App or BedtimeLullaby have ads?

Sleep Calculator App shows ads; BedtimeLullaby does not.

### Which is updated more often, Sleep Calculator App or BedtimeLullaby?

Sleep Calculator App ships an update every 8 months, and BedtimeLullaby every 3 months. Most recently, Sleep Calculator App was updated on October 21, 2026 and BedtimeLullaby on October 28, 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.*