# Window vs VitalFlow Oxygen Tracker Pro

The clearest difference is iOS requirement: VitalFlow Oxygen Tracker Pro at 14.0 against Window's 17.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Window sells 1 one-off in-app purchase and VitalFlow Oxygen Tracker Pro sells 5 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Window | VitalFlow Oxygen Tracker Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/window-fasting-timer/id6757469789/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | Free | — |
| Size | 7 MB | 43 MB |
| Requires iOS | 17.6 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [发发 道](https://appshunter.io/developer/1812431550) | [Minneapolis Hotel Group LLC](https://appshunter.io/developer/1850933302) |

## What reviewers say

### Window

[App page](https://appshunter.io/ios/app/window-fasting-timer/id6757469789)

This intermittent fasting timer helps you build healthy eating habits with real-time progress tracking and motivational animations. View your fasting status on the Lock Screen and Dynamic Island without opening the app. Track your history, streaks, and success rate with local data storage and no ads.

**Highlights:** One-tap fasting start, Real-time progress tracking, Dynamic Island & Live Activities integration, Preset and custom fasting durations, Fasting history and statistics, Local data storage

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Window Pro | $0.99 | one-time |


### VitalFlow Oxygen Tracker Pro

[App page](https://appshunter.io/ios/app/vitalflow-oxygen-tracker-pro/id6761712864)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Weekly-Trial | $4.99 | per 7 days |
| Monthly | $12.99 | per month |
| Yearly | $39.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Window free?

Window is free to download, with in-app purchases available.

### Is VitalFlow Oxygen Tracker Pro free?

VitalFlow Oxygen Tracker Pro is free to download, with in-app purchases available.

### Do Window or VitalFlow Oxygen Tracker Pro have ads?

Neither Window nor VitalFlow Oxygen Tracker Pro shows ads.

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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.*