# TRee vs IRIS SmartST

The clearest difference is update cadence: IRIS SmartST at monthly against TRee's every 2 months. TRee's advantage is iOS requirement (10.0 vs 13.2). On price, review sentiment, 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.

TRee ships an update every 2 months, IRIS SmartST monthly. The most recent releases landed on September 28, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | TRee | IRIS SmartST |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **5.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 19 MB | 7 MB |
| Requires iOS | **10.0** | 13.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KOIZUMI Lighting Technology Corp.](https://appshunter.io/developer/437797680) | [IRIS OHYAMA INC.](https://appshunter.io/developer/1354368086) |

## What reviewers say

### TRee

[App page](https://appshunter.io/ios/app/tree-light-control/id1352827991)

Control your smart lighting system with ease. Adjust brightness, color, and set schedules for automated lighting. This app requires compatible smart adapters or bridges and a Wi-Fi router.

**Highlights:** Adjust lighting brightness, Control lighting color, One-tap scene recall, Automated scheduling, Intuitive ON/OFF control

**In-app purchases:** none


### IRIS SmartST

[App page](https://appshunter.io/ios/app/iris-smartst/id1508483621)

This app helps you set up your smart speaker by registering your home WiFi information and choosing a voice command name. It facilitates the initial configuration for seamless integration with your smart home devices.

**Highlights:** Smart speaker initial setup, WiFi information registration, Voice command name setup, Device integration

**In-app purchases:** none


## Frequently asked questions

### Is TRee free?

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

### Is IRIS SmartST free?

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

### Do TRee or IRIS SmartST have ads?

Neither TRee nor IRIS SmartST shows ads.

### Which is updated more often, TRee or IRIS SmartST?

TRee ships an update every 2 months, and IRIS SmartST monthly. Most recently, TRee was updated on September 28, 2026 and IRIS SmartST 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.*