# Sleep Calculator Pro vs Vapend

The clearest difference is update cadence: Vapend at every 5 days against Sleep Calculator Pro's every 7 months. Sleep Calculator Pro's advantage is iOS requirement (16.4 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sleep Calculator Pro ships an update every 7 months, Vapend every 5 days. The most recent releases landed on November 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Sleep Calculator Pro | Vapend |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (76 ratings)](https://appshunter.io/ios/app/sleep-calculator-pro/id1416795317/reviews)** | — |
| Number of ratings | **76** | — |
| Positive reviews | 93.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 24 MB | 6 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [DealWatch24 LLC](https://appshunter.io/developer/1366306458) | [Yevgen Golub](https://appshunter.io/developer/1833462182) |

## What reviewers say

### Sleep Calculator Pro

[App page](https://appshunter.io/ios/app/sleep-calculator-pro/id1416795317)

This app helps you determine the optimal times to go to sleep and wake up to align with your natural 90-minute sleep cycles. It calculates ideal bedtime based on your desired wake-up time and vice-versa, promoting a more rested feeling upon waking. It also includes features for tracking sleep phases and a smart alarm to wake you gently.

**Highlights:** Calculate best time to go to sleep, Calculate best time to wake up, Track and analyze sleep cycles, Identify light, deep, and REM sleep phases, Smart alarm for gentle wake-ups, Bedtime notifications

**Features:** Vision Pro support

**In-app purchases:** none


### 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 Pro free?

Sleep Calculator Pro is free to download, with no in-app purchases.

### Is Vapend free?

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

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

Neither Sleep Calculator Pro nor Vapend shows ads.

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

Sleep Calculator Pro ships an update every 7 months, and Vapend every 5 days. Most recently, Sleep Calculator Pro was updated on November 2, 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.*