# Barometer vs Ventify

The clearest difference is price: Barometer at Free against Ventify's $0.99. Barometer also leads on update cadence (every 5 days vs every 2 months). Ventify's advantage is review sentiment (100% vs 62%) and in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Barometer is free to download; Ventify costs $0.99 up front. Barometer sells 3 one-off in-app purchases. Ventify asks for nothing beyond the download.

Barometer ships an update every 5 days, Ventify every 2 months. The most recent releases landed on September 29, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Barometer | Ventify |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.7 (11 ratings)](https://appshunter.io/ios/app/barometer-weather-logger/id1435691955/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 61.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 2 MB | 1 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ichiro NAKAHARA](https://appshunter.io/developer/1435691954) | [Johannes Bauer](https://appshunter.io/developer/1517004006) |

## What reviewers say

### Barometer

[App page](https://appshunter.io/ios/app/barometer-weather-logger/id1435691955)

This app logs atmospheric pressure with sea level correction using GPS data. It can record data in the background or more frequently when in the foreground. Manual height and position settings are also available for fixed location logging.

**Highlights:** Atmospheric pressure logging, Sea level correction, GPS height integration, Background logging, Manual height/position setting, Foreground logging

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| coffee | $0.99 | one-time |
| orange juice | $3.99 | one-time |
| dinner | $8.99 | one-time |


### Ventify

[App page](https://appshunter.io/ios/app/ventify/id6745443594)

This app analyzes indoor and outdoor conditions to advise on optimal ventilation for humidity control. It converts relative humidity to absolute values, providing clear recommendations on whether airing out a room is beneficial. Supports HomeKit and automatic weather data retrieval.

**Highlights:** Absolute humidity calculation, Ventilation recommendations, HomeKit integration, Automatic weather data, Celsius and Fahrenheit support, Sensor integration

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

**In-app purchases:** none


## Frequently asked questions

### Is Barometer free?

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

### Is Ventify free?

Ventify costs $0.99, with no in-app purchases.

### Do Barometer or Ventify have ads?

Neither Barometer nor Ventify shows ads.

### Which is updated more often, Barometer or Ventify?

Barometer ships an update every 5 days, and Ventify every 2 months. Most recently, Barometer was updated on September 29, 2026 and Ventify on September 22, 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.*