# RM AC vs Air Aroma

The clearest difference is iOS requirement: Air Aroma at 9.0 against RM AC's 11.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RM AC ships an update every 6 weeks, Air Aroma every 3 weeks. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RM AC | Air Aroma |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 3 MB | 23 MB |
| Requires iOS | 11.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [荣锋 林](https://appshunter.io/developer/1042936800) | [征 李](https://appshunter.io/developer/1616811712) |

## What reviewers say

### RM AC

[App page](https://appshunter.io/ios/app/rm-ac/id1234143756)

**Features:** macOS Compatibility

**In-app purchases:** none


### Air Aroma

[App page](https://appshunter.io/ios/app/air-aroma/id1620102164)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RM AC free?

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

### Is Air Aroma free?

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

### Do RM AC or Air Aroma have ads?

Neither RM AC nor Air Aroma shows ads.

### Which is updated more often, RM AC or Air Aroma?

RM AC ships an update every 6 weeks, and Air Aroma every 3 weeks. Most recently, RM AC was updated on October 26, 2026 and Air Aroma 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.*