# Aroma vs CastLink

The clearest difference is update cadence: CastLink at every 4 days against Aroma's monthly. Aroma's advantage is iOS requirement (13.0 vs 15.0). 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.

Aroma ships an update monthly, CastLink every 4 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Aroma | CastLink |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (124 ratings)](https://appshunter.io/ios/app/aroma-link/id1505915988/reviews)** | — |
| Number of ratings | **124** | — |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free | — |
| Size | 32 MB | 2 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [可汗 罗](https://appshunter.io/developer/1407110279) | [Shenzhen GaoshiGo Technology Co., Ltd.](https://appshunter.io/developer/1637771081) |

## What reviewers say

### Aroma

[App page](https://appshunter.io/ios/app/aroma-link/id1505915988)

This platform allows for the remote control and management of air treatment, odor control, and sterilization devices. It supports multiple communication methods and is compatible with both mobile and PC terminals for comprehensive data statistics and analysis.

**Highlights:** Cloud control platform, Bluetooth, WiFi, 2G/4G communication, Mobile and PC terminal compatibility, Data statistics and analysis, Hardware access for various equipment, Independent cloud control platform

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to connect and run
- 👍 User-friendly interface
- 👍 Awesome program ability
- 👍 Great app if you ask me
- 👍 Connects very fast on Bluetooth

**What reviewers complain about**

- 🐛 App doesn't work
- 🐛 Cannot connect to device
- 🐛 Bluetooth issues
- 🐛 WiFi connection problems
- 🐛 App is buggy

**Reported bugs**

- Device does not turn on
- Bluetooth connection is weak or lost
- WiFi connection is unstable or unavailable
- App does not save settings or schedules
- App reverts to factory settings

**Requested features**

- Add more time schedules
- Increase pause limit for schedules
- Add ability to edit day of the week in schedule
- Add more working periods
- Allow programming for the whole week with multiple options


### CastLink

[App page](https://appshunter.io/ios/app/castlink/id6761456751)

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

**In-app purchases:** none


## Frequently asked questions

### Is Aroma free?

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

### Is CastLink free?

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

### Do Aroma or CastLink have ads?

Neither Aroma nor CastLink shows ads.

### Which is updated more often, Aroma or CastLink?

Aroma ships an update monthly, and CastLink every 4 days. Most recently, Aroma was updated on November 7, 2026 and CastLink on October 31, 2026.

---

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