# AC Infinity vs Alen Air

The clearest difference is review sentiment: AC Infinity at 79% against Alen Air's 22%. AC Infinity also leads on rating (4.2 vs 2.6) and monetization model (free vs free with in-app purchases). 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.

AC Infinity holds the better App Store score, 4.2 against 2.6. Both are backed by a comparable volume of ratings — 859 and 184 respectively. Written reviews point the same way: 79% of AC Infinity's written reviews are positive against 22% of Alen Air's.

AC Infinity ships an update monthly, Alen Air every 2 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | AC Infinity | Alen Air |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (859 ratings)](https://appshunter.io/ios/app/ac-infinity/id1481751004/reviews)** | [2.6 (184 ratings)](https://appshunter.io/ios/app/alen-air/id1575726185/reviews) |
| Number of ratings | **859** | 184 |
| Positive reviews | **79.4% of reviews** | 21.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 387 MB | 443 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AC Infinity](https://appshunter.io/developer/1481751003) | [Alen Corporation](https://appshunter.io/developer/1511825778) |

## What reviewers say

### AC Infinity

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

Control and monitor your HVAC or grow projects with an intelligent ventilation system. Access advanced programming, track environmental data like temperature and humidity, and receive customizable alarms for optimal control.

**Highlights:** Advanced programming controls (timers, schedules, triggers), Wireless access to ON/OFF modes, Scheduled fan automation, Customizable alarms and push notifications, Environmental data monitoring (temperature, humidity), Data fluctuation charts and history logs, Exportable temperature and humidity data

**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


### Alen Air

[App page](https://appshunter.io/ios/app/alen-air/id1575726185)

Monitor and control your indoor air quality remotely. See real-time and historical data, set custom schedules, and receive alerts for poor air quality or filter replacements. Purchase Alen products and filters directly through the app.

**Highlights:** Remote control of air purifiers, Real-time air quality monitoring, Historical air quality data, Customizable schedules, Filter replacement notifications, In-app product purchases

**In-app purchases:** none

**What reviewers like**

- 🚀 Accurate air quality tracking
- 👍 User-friendly interface
- 🔒 Secure connection
- 💡 Helpful air quality notifications
- 🚀 Responsive app performance

**What reviewers complain about**

- 🐛 Frequent app crashes
- 🐛 Connectivity issues
- 🐛 Inaccurate air quality readings
- 🔒 Excessive location permissions
- 🐛 Unreliable scheduling features

**Reported bugs**

- App fails to open after recent update
- Device disconnections after app updates
- Inconsistent sync between app and air purifier
- Inability to save device connections
- Frequent log-out issues

**Requested features**

- Add scheduling and automation options
- Improve historical air quality data visualization
- Provide option to disable lights/display on air purifier
- Allow manual filter life tracking
- Integrate with smart home platforms


## Frequently asked questions

### Is AC Infinity free?

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

### Is Alen Air free?

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

### Which has better reviews, AC Infinity or Alen Air?

AC Infinity is rated higher. AC Infinity averages 4.2 out of 5 from 859 ratings, while Alen Air averages 2.6 from 184 ratings.

### Do AC Infinity or Alen Air have ads?

Neither AC Infinity nor Alen Air shows ads.

### Which is updated more often, AC Infinity or Alen Air?

AC Infinity ships an update monthly, and Alen Air every 2 months. Most recently, AC Infinity was updated on November 7, 2026 and Alen Air on November 3, 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.*