# Sleep Calculator App vs Vapend

The clearest difference is in-app purchases: Vapend at none against Sleep Calculator App's 1. Vapend also leads on ads (none vs shown) and update cadence (every 5 days vs every 8 months). Sleep Calculator App's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price there is nothing between them.

Both are free to download. Sleep Calculator App sells 1 one-off in-app purchase. Vapend asks for nothing beyond the download.

Sleep Calculator App ships an update every 8 months, Vapend every 5 days. The most recent releases landed on October 30, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Sleep Calculator App | Vapend |
| --- | --- | --- |
| 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 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 31 MB | 6 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Luz Ochoa](https://appshunter.io/developer/1508017518) | [Yevgen Golub](https://appshunter.io/developer/1833462182) |

## 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 |


### Vapend

[App page](https://appshunter.io/ios/app/vapend-quit-vaping-tracker/id6784423230)

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

**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 Vapend free?

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

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

Sleep Calculator App shows ads; Vapend does not.

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

Sleep Calculator App ships an update every 8 months, and Vapend every 5 days. Most recently, Sleep Calculator App was updated on October 30, 2026 and Vapend on October 6, 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.*