# RADISTAR vs SmartAlarm+3

The clearest difference is update cadence: RADISTAR at every 2 months against SmartAlarm+3's every 4 months. RADISTAR also leads on iOS requirement (10.0 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.

RADISTAR ships an update every 2 months, SmartAlarm+3 every 4 months. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | RADISTAR | SmartAlarm+3 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | — |
| Size | 28 MB | 307 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zhejiang Rongrong Industrial Co., Ltd](https://appshunter.io/developer/1442061551) | [Pyronix Ltd.](https://appshunter.io/developer/906273568) |

## What reviewers say

### RADISTAR

[App page](https://appshunter.io/ios/app/radistar/id1442061552)

Control your home's temperature remotely and manage multiple devices with custom names. This app offers intelligent scheduling for energy savings and displays real-time power consumption, acting as a smart home energy manager.

**Highlights:** Remote temperature monitoring and control, Custom naming for multiple devices, Intelligent scheduling for energy saving, Real-time power consumption display, Home energy consumption management

**Features:** macOS Compatibility

**In-app purchases:** none


### SmartAlarm+3

[App page](https://appshunter.io/ios/app/smartalarm-plus-3/id1532876579)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is RADISTAR free?

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

### Is SmartAlarm+3 free?

SmartAlarm+3 is free to download, with no in-app purchases.

### Do RADISTAR or SmartAlarm+3 have ads?

Neither RADISTAR nor SmartAlarm+3 shows ads.

### Which is updated more often, RADISTAR or SmartAlarm+3?

RADISTAR ships an update every 2 months, and SmartAlarm+3 every 4 months. Most recently, RADISTAR was updated on October 3, 2026 and SmartAlarm+3 on October 8, 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.*