# GoSunThermo vs Sierro

The clearest difference is review sentiment: GoSunThermo at 100% against Sierro's 50%. GoSunThermo also leads on rating (4.3 vs 2.3) and iOS requirement (9.1 vs 15.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GoSunThermo holds the better App Store score, 4.3 against 2.3. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews point the same way: 100% of GoSunThermo's written reviews are positive against 50% of Sierro's.

GoSunThermo ships an update every 2 weeks, Sierro every 10 days. The most recent releases landed on November 2, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | GoSunThermo | Sierro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (4 ratings)](https://appshunter.io/ios/app/gosunthermo/id1447187875/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/sierro/id6808530922/reviews) |
| Number of ratings | **4** | 3 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | Free | Free |
| Size | 37 MB | 7 MB |
| Requires iOS | **9.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [林青 刘](https://appshunter.io/developer/680596060) | [Sierro Intelligent Technology Co., Ltd](https://appshunter.io/developer/6808530924) |

## What reviewers say

### GoSunThermo

[App page](https://appshunter.io/ios/app/gosunthermo/id1447187875)

Monitor your barbecue temperature and time remotely. Receive alerts when the temperature goes out of range or when your set cooking time is up. Keep your grilling on track with real-time updates to your phone.

**Highlights:** Real-time temperature monitoring, Barbecue time tracking, Temperature range alerts, Set time reminders, Remote phone updates

**Features:** macOS Compatibility

**In-app purchases:** none


### Sierro

[App page](https://appshunter.io/ios/app/sierro/id6808530922)

Monitor and manage your home energy storage system. View battery status, solar generation, and power flow. Receive alerts for power outages and low battery levels to stay informed.

**Highlights:** Monitor battery status, View solar generation, Track power flow, Receive device alerts, Get outage notifications, Low battery alerts

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

**In-app purchases:** none


## Frequently asked questions

### Is GoSunThermo free?

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

### Is Sierro free?

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

### Which has better reviews, GoSunThermo or Sierro?

GoSunThermo is rated higher. GoSunThermo averages 4.3 out of 5 from 4 ratings, while Sierro averages 2.3 from 3 ratings.

### Do GoSunThermo or Sierro have ads?

Neither GoSunThermo nor Sierro shows ads.

### Which is updated more often, GoSunThermo or Sierro?

GoSunThermo ships an update every 2 weeks, and Sierro every 10 days. Most recently, GoSunThermo was updated on November 2, 2026 and Sierro on November 10, 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.*