# Sundirect Smart vs Gruff Automation

The clearest difference is update cadence: Gruff Automation at every 6 weeks against Sundirect Smart's every 12 months. Sundirect Smart's advantage is iOS requirement (13.0 vs 16.4). 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.

Sundirect Smart ships an update every 12 months, Gruff Automation every 6 weeks. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Sundirect Smart | Gruff Automation |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 182 MB | 33 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [焕康 吴](https://appshunter.io/developer/1398707077) | [Altos Engineering OU](https://appshunter.io/developer/1734619628) |

## What reviewers say

### Sundirect Smart

[App page](https://appshunter.io/ios/app/sundirect-smart/id1398707078)

Control your WiFi-enabled heaters and thermostats remotely. Manage power, set schedules, and activate holiday modes from anywhere. Enjoy convenient and smart heating management.

**Highlights:** Remote power on/off, Manual heating mode, Smart mode with 7-day programming, Holiday mode, Easy device connection, Device sharing

**In-app purchases:** none


### Gruff Automation

[App page](https://appshunter.io/ios/app/gruff-automation/id6499204517)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sundirect Smart free?

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

### Is Gruff Automation free?

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

### Do Sundirect Smart or Gruff Automation have ads?

Neither Sundirect Smart nor Gruff Automation shows ads.

### Which is updated more often, Sundirect Smart or Gruff Automation?

Sundirect Smart ships an update every 12 months, and Gruff Automation every 6 weeks. Most recently, Sundirect Smart was updated on November 2, 2026 and Gruff Automation on November 4, 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.*