# Sunrun vs Thermostat Controller

The clearest difference is rating: Thermostat Controller at 5.0 against Sunrun's 4.5. Thermostat Controller also leads on review sentiment (100% vs 73%) and update cadence (weekly vs every 4 weeks). Sunrun's advantage is ratings volume (3K vs 1) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Thermostat Controller holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Sunrun has 3K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 73% of Sunrun's written reviews are positive against 100% of Thermostat Controller's.

Sunrun ships an update every 4 weeks, Thermostat Controller weekly. The most recent releases landed on October 1, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | Sunrun | Thermostat Controller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (3K ratings)](https://appshunter.io/ios/app/sunrun/id6443806453/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thermostat-controller/id6502414185/reviews)** |
| Number of ratings | **3K** | 1 |
| Positive reviews | 73.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 96 MB | 5 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Sunrun Inc.](https://appshunter.io/developer/1052845424) | [JASON QUARTZ](https://appshunter.io/developer/1745379151) |

## What reviewers say

### Sunrun

[App page](https://appshunter.io/ios/app/sunrun/id6443806453)

Monitor your solar energy system, track energy production, and access support. Gain insights into your environmental impact and manage your system data from a single, user-friendly interface.

**Highlights:** System data management, Energy production tracking, Customer support access, Environmental impact insights, User-friendly interface

**In-app purchases:** none

**What reviewers like**

- 👍 User-friendly interface
- 🚀 Real-time data tracking
- 💡 Comprehensive solar production metrics
- 🔍 Detailed system information
- 🌞 Visually pleasing app design

**What reviewers complain about**

- 🐛 Inaccurate or delayed data
- 🔍 Lack of individual panel monitoring
- 🔋 No battery usage information
- 🤔 Confusing or unclear data presentation
- 🔍 Missing system specifications

**Reported bugs**

- App crashes or freezes
- Frequent loading issues
- Charts and graphs not functioning properly
- Discrepancies between app and actual production

**Requested features**

- Download or export data
- Integrate energy usage data
- Add alerts and notifications
- Provide landscape mode on iPad
- Show year-over-year production comparisons


### Thermostat Controller

[App page](https://appshunter.io/ios/app/thermostat-controller/id6502414185)

Monitor and adjust your Venstar thermostat's temperature, humidity, and fan settings directly from your phone. View current and historical runtime data. Receive optional notifications for state changes.

**Highlights:** View current temperature and humidity, Adjust set temperature, Change heating/cooling mode, Control fan settings, Monitor daily runtime history, Optional state change notifications

**In-app purchases:** none


## Frequently asked questions

### Is Sunrun free?

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

### Is Thermostat Controller free?

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

### Which has better reviews, Sunrun or Thermostat Controller?

Thermostat Controller is rated higher. Sunrun averages 4.5 out of 5 from 3K ratings, while Thermostat Controller averages 5.0 from 1 ratings.

### Do Sunrun or Thermostat Controller have ads?

Neither Sunrun nor Thermostat Controller shows ads.

### Which is updated more often, Sunrun or Thermostat Controller?

Sunrun ships an update every 4 weeks, and Thermostat Controller weekly. Most recently, Sunrun was updated on October 1, 2026 and Thermostat Controller on June 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.*