# iAroma vs Comp World

The clearest difference is update cadence: Comp World at weekly against iAroma's every 4 months. iAroma's advantage is iOS requirement (9.0 vs 15.5). 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.

iAroma ships an update every 4 months, Comp World weekly. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | iAroma | Comp World |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 9.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Free | — |
| Size | 15 MB | 73 MB |
| Requires iOS | **9.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [师松 梁](https://appshunter.io/developer/922518056) | [Nexus Solutions](https://appshunter.io/developer/1761547322) |

## What reviewers say

### iAroma

[App page](https://appshunter.io/ios/app/iaroma/id1435313983)

Control your aroma diffuser with ease. Select working modes, adjust lighting colors and brightness, and manage mist settings. Set misting schedules with the alarm clock feature and even play music through the app.

**Highlights:** Light control (color, brightness), Mist control (volume, mode, timer), Alarm clock for misting schedules, Music playback via app, Control all diffuser functions

**In-app purchases:** none


### Comp World

[App page](https://appshunter.io/ios/app/comp-world/id6615076867)

**In-app purchases:** none


## Frequently asked questions

### Is iAroma free?

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

### Is Comp World free?

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

### Do iAroma or Comp World have ads?

Neither iAroma nor Comp World shows ads.

### Which is updated more often, iAroma or Comp World?

iAroma ships an update every 4 months, and Comp World weekly. Most recently, iAroma was updated on October 12, 2026 and Comp World on October 7, 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.*