# BT21

> BT21 Bluetooth Control

Canonical page: [https://chrome-stats.com/d/id1561931603](https://chrome-stats.com/d/id1561931603)

## Overview

- **ID:** `id1561931603`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Thermogroup UK
- **Category:** Lifestyle
- **Version:** 2.0.0
- **Last updated:** 2024-08-30
- **First published:** 2021-05-05
- **Size:** 23 MB
- **Data as of:** 2026-09-23
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/bt21/id1561931603)
- **Website:** [https://www.thermosphere.com/thermostats/bluetooth-programmable/](https://www.thermosphere.com/thermostats/bluetooth-programmable/)
- **Privacy policy:** [https://www.thermosphere.com/privacy-policy/](https://www.thermosphere.com/privacy-policy/)

## Description

Customise your 7 day heating schedule faster than ever before with the BT21 app. Connect via bluetooth and control all of your thermostat settings quickly and easily. 

Once you've set up one thermostat, copy and paste all of your settings to another thermostat with easy presets.

- Quick and easy heating schedule.
- Copy presets to multiple thermostats.
- View temperature data for the last 7 hours.
- View %heating time for the last 7 days.
- Send remote technical reports.
- Manage temperature limits and calibration.
- Set and manage all thermostat settings.
- Connect to a wireless sensor (sold separately).
- Lockdown mode to prevent tampering.
- Hide unwanted thermostats.
- Switch between heating, snow melting and power limit modes.
- Switch between air, floor and remote sensors.
- Access to online user guides and videos.

## Rankings

- #1,232,546 — Overall

## Similar extensions and apps

- [HeatNext BT](https://chrome-stats.com/d/id6449220210)
- [Thermostat\_](https://chrome-stats.com/d/id1082977357) — 2.50 / 5
- [Clausius BT](https://chrome-stats.com/d/id1599744081)
- [Mapeheat Thermo](https://chrome-stats.com/d/id6763576162)
- [Heatit WIFI](https://chrome-stats.com/d/id1568098480)
- [iHeatControlBT](https://chrome-stats.com/d/id6754379281)
- [Smart Temp SMT-400](https://chrome-stats.com/d/id1439933628)
- [Next Day Heating](https://chrome-stats.com/d/id6752635728)
- [SWATT®](https://chrome-stats.com/d/id1334128169)
- [PROTHERMAL](https://chrome-stats.com/d/id6759644732)
- [Thermostat control BLE](https://chrome-stats.com/d/id1664194054) — 1.00 / 5
- [Rifar](https://chrome-stats.com/d/id6737058098)

---

Source: [Chrome-Stats](https://chrome-stats.com/d/id1561931603)