# T-Smart > Smart home app for remote control of domestic hot water systems. (iPhone/iPad app by EuroICC d.o.o..) - Source: https://appshunter.io/ios/app/t-smart/id1504665934 (this page in markdown: same URL + `.md`) - Developer: [EuroICC d.o.o.](https://appshunter.io/developer/1362060463) - Category: Utilities - Price: Free - Age rating: 4+ - Requires: iOS 13.0 · 8 MB - Languages: American English, Albanian, Croatian, Dutch, German (Germany), Italian, Macedonian, Polish, Russian, Serbian and 2 more - Released: 2020-04-09 - Data updated: 2026-08-25 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/t-smart/id1504665934/reviews.md ## What is T? The T-Smart app from Tesla UK Ltd allows control and configuration of your domestic hot water via the T-Smart thermostat. The T-Smart solution enables traditional hot water cylinders to become an integrated smart home device. This Wi-Fi enabled control allows for wireless connection to your home's water heater. The T-Smart app allows you to control and configure your planners or water temperature via your iOS device remotely. ## Key features - Remote hot water control - Configure water temperature - Smart home integration - Wi-Fi enabled connectivity - iOS device compatibility ## Recent user reviews (10 of 17) All indexed reviews: https://appshunter.io/ios/app/t-smart/id1504665934/reviews.md ### 3/5 — Heater function doesn’t adopt *2026-05-29, version 2.3.6* Had over a year now, tried on various settings keeps tripping the thermal cut out. Also when you select a heat function such as time, eco or smart exit the screen and go back in the heat function change hasn’t been adopted. After several attempts it adopts the new function The timer function on off times set are not switching on or off after changes have been saved. ### 3/5 — Needs refinement. *2026-02-07, version 2.3.4* It does very well at the tasks, but the UI hasn’t been fully developed to a high standard. The menu system drop downs are smaller than the text that fills it: Click on the plans gear and you’ll see that the drop down is cut in half with no way to scroll down further. Need a feature enhancement to record the amount of time that the heater is powered on or even better; a graph of power consumption / tank temperature. This information has to be available to make smart mode work.. ### 3/5 — Latest update has broken access away from home WiFi *2025-12-31, version 2.3.4* The latest version of the app and firmware won’t communicate away from home network. Please can you fix. ### 3/5 — Good but unfinished *2024-11-27, version 2.3.2* The product is good. The connectivity is okay. The firmware update process is broken, does not allow your normal timer plan to run if a firmware update is available. Really buggy firmware update process. Firmware updates are important but so is having hot water in the winter. ### 3/5 — Not very smart . *2023-08-29, version 2.2.9* The product is great . The app could be so much more with an update . For example I will mostly use the boost feature but my only default option is 1hr at 60c . I want 2hrs at 70c . But feel it should have the ability to be fully customisable maybe with different times (boost 1, boost 2 etc) like I can with a £5 smart plug from B&M . Sadly returning. ### 3/5 — Could be so much more *2023-03-24, version 2.2.9* This product could be so much more. For example could provide a nice graph in the app to show temp over time, could allow boost for a time period, could integrate with solar providers to use excess generated electric. ### 2/5 — App super slow and glitchy *2023-02-15, version 2.2.9* I have to close and open the app and check to see if it’s on after activated, most of the time is not and have to try again. Please sort this out ### 1/5 — Rubbish app *2023-01-15, version 2.2.9* This app is so poor it’s hard to see how something like this can be offered in 2023. Obvioulsy built by somebody with zero tech skills. Functions so basic and simple and yet does not work. ### 1/5 — Simple but great…barely ‘smart’ tho *2023-01-13, version 2.2.9* The concept is simple. Remotely monitor the temperature of the water and allow you to set a programme. That’s it. I’ve had it installed for about a week without issues so far. It took 10mins max to install the THITS version. The app is a bit basic tho and some things are not really ‘smart’. 1. The big number in the middle is the target temperate. It’s more intuitive if that was the actual temperate of the water, and the small number below was the target. 2. There is no indication of how long it’s taking to heat the water. I have it set for 4 hours in the middle of the night. I’ve no clue if it’s reaching temp in 1hr or taking 4hrs. 3. Some analytics in the app would be good. I want to see a graph of temperature overlayed with when the immersion is running. I want to scroll back through time to see what it did on different days, and i want to know how many kWh it used each day to heat the water. 4. As others have said, a countdown timer is critical basic functionality. If you turn the immersion on, you shouldn’t have to come back to remember to turn it off. That’s not smart. 5. If it’s going to have the word ‘smart’ in the name, then the whole interface needs to be more intuitive then it currently is. You shouldn’t have to read a manual to know how to use this. UPDATE 12/1/2023 - the device is dead. Not turning on. Nothing on the screen. I replaced the fuse…and nothing. I put the old thermostat back in, and it started working immediately. I’m sending this back for a refund. ### 4/5 — Nice but missing a countdown timer *2022-10-21, version 2.2.5* Nice app, but it is missing a simple timer. I would like to be able to turn it on manually for 40 minutes or 30, 20 etc ## Frequently asked questions about T ### What can I do with T-Smart? T-Smart allows you to remotely control and configure your domestic hot water system, including setting water temperature and planners, via your iOS device. ### Is T-Smart free to use? Yes, T-Smart is available for free download and use, with no in-app purchases or advertisements. ### What devices does T-Smart support? T-Smart is compatible with iPhone and iPod devices, running on iOS. ### How often is T-Smart updated? The app was last updated on February 14, 2026, with version 2.3.6. Update frequency is not explicitly stated but indicates ongoing development. ### What is the age rating for T-Smart? T-Smart has an age rating of 4+, making it suitable for a wide range of users. ### Does T-Smart require a specific thermostat? Yes, T-Smart is designed to work with the T-Smart thermostat to enable smart control of your domestic hot water cylinder. ### Can T-Smart be used offline? The app requires a Wi-Fi connection to your home's water heater for remote control, so offline functionality for control is not possible. ## Version history (last 5 releases) ### 2.3.6 — 2026-02-14 bug fixes, performance improvements ### 2.3.4 — 2025-11-02 bug fixes and performance improvements ### 2.3.3 — 2024-12-01 Bug fixes and performance improvements ### 2.3.2 — 2024-11-23 Bug fixes and performance improvements ### 2.2.9 — 2022-12-19 Bug fixes and improvements ## Apps similar to T | App | Rating | Price | Category | | --- | --- | --- | --- | | [佐敦](https://appshunter.io/ios/app/id1448255140) | — | Free | Utilities | | [益电宝-数据改变未来](https://appshunter.io/ios/app/id1434796500) | — | Free | Utilities | | [HeatNext](https://appshunter.io/ios/app/heatnext/id1440372440) | — | Free | Utilities | | [GHIA KIDS](https://appshunter.io/ios/app/ghia-kids/id1434789680) | — | Free | Utilities | | [Omni Relprev](https://appshunter.io/ios/app/omni-relprev/id1434690340) | — | Free | Utilities | | [MISD Tip](https://appshunter.io/ios/app/misd-tip/id1440174120) | — | Free | Utilities | ## More apps by EuroICC d.o.o. - [EST-100](https://appshunter.io/ios/app/est-100/id1441017861) - [Termorad Smart App](https://appshunter.io/ios/app/termorad-smart-app/id1451074136) - [Smart Coballes](https://appshunter.io/ios/app/smart-coballes/id1467345371) - [Ting-Inox](https://appshunter.io/ios/app/ting-inox/id1495365376) - [Bandini](https://appshunter.io/ios/app/bandini/id1504666069) All apps by EuroICC d.o.o.: https://appshunter.io/developer/1362060463 --- *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 2026-08-25.*