# AC Infinity vs Absolute Humidity

The clearest difference is in-app purchases: AC Infinity at none against Absolute Humidity's 2. AC Infinity also leads on ads (none vs shown) and ratings volume (842 vs 2). Absolute Humidity's advantage is rating (4.5 vs 4.2). On price, review sentiment, update cadence and device support there is nothing between them.

Both are free to download. Absolute Humidity sells 2 in-app purchases, starting at $1.99 per month. AC Infinity asks for nothing beyond the download.

Absolute Humidity holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: AC Infinity has 842 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 79% and 80% positive.

AC Infinity ships an update monthly, Absolute Humidity every 5 weeks. The most recent releases landed on September 27, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | AC Infinity | Absolute Humidity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (842 ratings)](https://appshunter.io/ios/app/ac-infinity/id1481751004/reviews) | **[4.5 (2 ratings)](https://appshunter.io/ios/app/absolute-humidity/id1640356804/reviews)** |
| Number of ratings | **842** | 2 |
| Positive reviews | 79.3% of reviews | **80.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 377 MB | 12 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [AC Infinity](https://appshunter.io/developer/1481751003) | [Yuta Hirobe](https://appshunter.io/developer/572236713) |

## What reviewers say

### AC Infinity

[App page](https://appshunter.io/ios/app/ac-infinity/id1481751004)

Control and monitor your HVAC or grow environment with intelligent ventilation. Access advanced programming, view real-time environmental data, and receive customizable alerts for optimal control.

**Highlights:** Wireless programming controls, Scheduled fan automation, Customizable alarms and notifications, Real-time temperature and humidity data, Environmental data visualization, History logs and data export

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

**In-app purchases:** none

**What reviewers like**

- 👍 Convenient and easy to use
- 🚀 Powerful automation and control
- 💡 Excellent app functionality
- 🔍 Detailed monitoring and data tracking
- 🤖 Impressive AI-powered features

**What reviewers complain about**

- 🐛 Connectivity issues after updates
- ⚠️ Unstable settings changes
- 🕰️ Slow app performance
- 🤔 Confusing user interface
- 🔌 Bluetooth-only connectivity limitations

**Reported bugs**

- App crashes after firmware updates
- Devices randomly disconnecting from app
- Incorrect data reporting on the app
- Automation settings being reset unexpectedly

**Requested features**

- Add Wi-Fi connectivity for remote control
- Improve data visualization and graphing
- Implement more advanced automation options
- Allow custom fan speed and light intensity control
- Add support for day/night mode settings


### Absolute Humidity

[App page](https://appshunter.io/ios/app/absolute-humidity/id1640356804)

This app calculates and displays absolute humidity using temperature and relative humidity data from connected devices. It helps users understand their environmental comfort level with numerical values and visuals. A Pro version offers weather forecasts for any location.

**Highlights:** Absolute humidity calculation, Supports HomeKit & SwitchBot meters, Comfort level visualization, Weather information (Pro version), Volumetric & gravimetric humidity display, Ad-free experience (Pro version)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $1.99 | per month |
| Annual Plan | $17.49 | per year |


## Frequently asked questions

### Is AC Infinity free?

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

### Is Absolute Humidity free?

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

### Which has better reviews, AC Infinity or Absolute Humidity?

Absolute Humidity is rated higher. AC Infinity averages 4.2 out of 5 from 842 ratings, while Absolute Humidity averages 4.5 from 2 ratings.

### Do AC Infinity or Absolute Humidity have ads?

Absolute Humidity shows ads; AC Infinity does not.

### Which is updated more often, AC Infinity or Absolute Humidity?

AC Infinity ships an update monthly, and Absolute Humidity every 5 weeks. Most recently, AC Infinity was updated on September 27, 2026 and Absolute Humidity on September 13, 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.*