# Alen Air vs SmarTouch 2

The clearest difference is update cadence: SmarTouch 2 at monthly against Alen Air's every 2 months. Alen Air's advantage is iOS requirement (15.0 vs 17.0). 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.

Alen Air ships an update every 2 months, SmarTouch 2 monthly. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Alen Air | SmarTouch 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (184 ratings)](https://appshunter.io/ios/app/alen-air/id1575726185/reviews)** | — |
| Number of ratings | **184** | — |
| Positive reviews | 21.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 443 MB | 48 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alen Corporation](https://appshunter.io/developer/1511825778) | [American Concepts](https://appshunter.io/developer/1537842009) |

## What reviewers say

### 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


### SmarTouch 2

[App page](https://appshunter.io/ios/app/smartouch-2/id6751552369)

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

**In-app purchases:** none


## Frequently asked questions

### Is Alen Air free?

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

### Is SmarTouch 2 free?

SmarTouch 2 is free to download, with no in-app purchases.

### Do Alen Air or SmarTouch 2 have ads?

Neither Alen Air nor SmarTouch 2 shows ads.

### Which is updated more often, Alen Air or SmarTouch 2?

Alen Air ships an update every 2 months, and SmarTouch 2 monthly. Most recently, Alen Air was updated on November 7, 2026 and SmarTouch 2 on October 30, 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.*