# Thermostat Controller

> Local control and monitoring for Venstar thermostats. (iPhone/iPad app by JASON QUARTZ.)

- Source: https://appshunter.io/ios/app/thermostat-controller/id6502414185 (this page in markdown: same URL + `.md`)
- Developer: [JASON QUARTZ](https://appshunter.io/developer/1745379151)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 5 MB
- Languages: American English
- Released: 2024-05-13
- Data updated: 2026-06-08
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/thermostat-controller/id6502414185/reviews.md

## What is Thermostat Controller?

This app lets you view the data from and control your Venstar thermostat locally.

Note: "Locally" refers to the fact that your Venstar thermostat has a local API. This app is interacting with this local API. Meaning, unless you have remote mode enabled and are running the companion app on a computer, then, if your phone isn't connected to the same Wi-Fi network as your thermostat, you won't be able to read from it or control it.

Data you can view:

* Current temperature
* Set temperature
* Humidity
* Mode (heat, cool, auto)
* Fan state
* Today’s runtime
* Runtime for each day of the past week
* The average daily runtime for the past week

What you can control:

* Increase/decrease the set temperature
* Change the mode (heating, cooling, auto)
* Change the fan mode (always on or auto)

Optional push notifications are available to let you know when the thermostat state changes from idle to active (e.g. heating or cooling) or vice versa. These push notifications require the companion app to be running on a computer as well as an API key. More info here: https://thermostat-controller.studiojq.io/push

An optional remote mode is now also available, which lets you view your thermostat data while not on the same Wi-Fi network as the thermostat (i.e. from anywhere). This remote mode requires the companion app to be running on a computer as well as an API key. The remote mode is view only. You cannot control your thermostat remotely. More info here: https://thermostat-controller.studiojq.io/remote

Documentation: https://thermostat-controller.studiojq.io

## Key features

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

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/thermostat-controller/id6502414185/reviews.md

### 5/5 — t7900 venstar

*2024-12-13*

Venstar app crashed, not able to connect. Thermostat Controller Utilities Work great and connected on my IPhone with no issues.

## Frequently asked questions about Thermostat Controller

### How does Thermostat Controller connect to my Venstar thermostat?

Thermostat Controller connects to your Venstar thermostat locally via its API. This means your phone must be on the same Wi-Fi network as the thermostat for direct control and viewing, unless remote mode is enabled.

### Can I control my thermostat remotely with Thermostat Controller?

Thermostat Controller offers an optional view-only remote mode that allows you to see your thermostat data from anywhere. However, full remote control requires the companion app running on a computer and is not a feature of the mobile app itself.

### What data can I view with Thermostat Controller?

You can view the current temperature, set temperature, humidity, mode (heat, cool, auto), fan state, and daily runtime data for the past week.

### Does Thermostat Controller have ads?

No, Thermostat Controller is ad-free. It is a free application with no advertisements.

### What devices does Thermostat Controller support?

Thermostat Controller is currently supported on iPhone devices.

### How often is Thermostat Controller updated?

The latest version, 1.2.0, was released on 2025-12-14, indicating recent development and support for the application.

### What is the age rating for Thermostat Controller?

Thermostat Controller has an age rating of 4+, making it suitable for a wide range of users.

### Can I get notifications about my thermostat's status?

Yes, optional push notifications are available to alert you when your thermostat's state changes from idle to active (e.g., heating or cooling) and vice versa.

## Version history (last 5 releases)

### 1.2.0 — 2025-12-14

- Added a remote mode, which lets you view your thermostat data from anywhere.

### 1.1.1 — 2024-05-26

* Fix for issue causing some theme settings to not apply after last update.

### 1.1.0 — 2024-05-26

* Updates to the order of operations for certain functions, to correct some issues occurring with/on slow connections.
* Optimization/increase in speed of data retrieval and thermostat control functions.

### 1.0.1 — 2024-05-17

* Updated display name to be consistent with name in App Store.
* Updates to ensure push notifications stop if previously-saved API key is removed/cleared.

### 1.0.0 — 2024-05-14

No release notes.

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## Related topics

[venstar thermostat](https://appshunter.io/ios/topics/venstar-thermostat) · [venstar](https://appshunter.io/ios/topics/venstar) · [thermostat control](https://appshunter.io/ios/topics/thermostat-control)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-08.*