# Formation Massage vs Ventilate

The clearest difference is device support: Formation Massage at 3 against Ventilate's 1. Formation Massage also leads on iOS requirement (11.0 vs 18.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Formation Massage sells 1 one-off in-app purchase and Ventilate sells 2 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Formation Massage | Ventilate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ventilate-when-to-open/id6786653699/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | — | Freemium |
| Size | 609 MB | 16 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Valiprod](https://appshunter.io/developer/1124948609) | [Vivace App Studio](https://appshunter.io/developer/1795460622) |

## What reviewers say

### Formation Massage

[App page](https://appshunter.io/ios/app/formation-massage/id1559274672)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mode premium | $7.99 | one-time |


### Ventilate

[App page](https://appshunter.io/ios/app/ventilate-when-to-open/id6786653699)

This app provides personalized guidance on when to open or close windows and where to place fans based on local weather and indoor temperature. It helps optimize home cooling by suggesting the use of outdoor air when it's cooler, potentially reducing air conditioning use.

**Highlights:** Per-window advice (close, crack, open wide), Fan placement guidance, Weather-based timing, Outdoor air cooling optimization, Indoor temperature history chart, Gentle reminders, Home Screen widget and Siri integration

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Ventilate Pro | $0.99 | per 7 days |
| Yearly Ventilate Pro | $9.99 | per year |


## Frequently asked questions

### Is Formation Massage free?

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

### Is Ventilate free?

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

### Do Formation Massage or Ventilate have ads?

Neither Formation Massage nor Ventilate shows ads.

### Which is updated more often, Formation Massage or Ventilate?

Formation Massage ships an update every 5 days, and Ventilate every 5 days. Most recently, Formation Massage was updated on October 27, 2026 and Ventilate on October 29, 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.*