# i vs HVAC Smart

The clearest difference is update cadence: i at fortnightly against HVAC Smart's every 9 months. i also leads on iOS requirement (9.0 vs 15.6). 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.

i ships an update fortnightly, HVAC Smart every 9 months. The most recent releases landed on October 27, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | i | HVAC Smart |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 9 months |
| Size | 34 MB | 26 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CG Midea Heating & Ventilating Equipment CO., Ltd.](https://appshunter.io/developer/918398670) | [ZHUHAI VDATA TECHNOLOGY CO., LTD](https://appshunter.io/developer/1239657281) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-comfy/id1499744043)

**Features:** macOS Compatibility

**In-app purchases:** none


### HVAC Smart

[App page](https://appshunter.io/ios/app/hvac-smart/id1511650678)

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

**In-app purchases:** none


## Frequently asked questions

### Is i free?

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

### Is HVAC Smart free?

HVAC Smart is free to download, with no in-app purchases.

### Do i or HVAC Smart have ads?

Neither i nor HVAC Smart shows ads.

### Which is updated more often, i or HVAC Smart?

i ships an update fortnightly, and HVAC Smart every 9 months. Most recently, i was updated on October 27, 2026 and HVAC Smart on October 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*