# Radiator Calculator — user reviews

> 11 indexed App Store user reviews of Radiator Calculator by Physmo, rated 4.80/5 from 4 ratings.

- Source: https://appshunter.io/ios/app/radiator-calculator/id1445426217/reviews
- App overview in markdown: https://appshunter.io/ios/app/radiator-calculator/id1445426217.md
- Rating breakdown: 5★ 3 · 4★ 1 · 3★ 0 · 2★ 0 · 1★ 0

## Most critical reviews (10 lowest-rated)

### 1/5 — Not work

*2022-12-06*

I tried to calculate my bedrooms and all needs 16 btu. This app is joke. Don't buy it.

**Developer response:** Hi, sorry it’s not working for you. There was a temporary glitch with our server that was causing the problem you experienced but it should be ok now if you want to try again. Get in touch through the app settings button if you’d prefer a refund.

Thanks!

### 1/5 — Can only do delta 50

*2022-06-02*

Sorry, but this is no good for the new building registration part L, It needs to at least adjust to delta 35, this app will be useless for new installs after the 15/6/2022, it can still work out the heat loss for older existing installations designed on a 75oC flow rate.

**Developer response:** Hi, thanks for the feedback. I’ve released an update (v1.3) where you can now switch to a DeltaT of 35c in the settings menu (tap the cog icon).

If you enjoy the app I’d appreciate you rating it again as low ratings make a difference to my sales.

Thanks
Tony

### 1/5 — Internet

*2021-05-10*

App saying no internet or 4g found even though I have full internet connection.

### 1/5 — Pointless app

*2020-06-07*

You can not get a full heat design for the entire house, you can only do each individual room. It takes a lot of time and effort copying and pasting the emailed report and then you have to manually type the BTU requirement in. Waste of money free ones online Tommie a better job

### 3/5 — Good, solid, but not perfect

*2020-09-29*

Good app. Really easy to use. It could just do with the option to edit room names, so when I need to know which rad gos in which bedroom, for instance, I won’t have to redo the calculations.

**Developer response:** Hi, glad you like the app. Before you tap the save button on the results screen you can tap the name to edit it and give it a more useful name. I’ll look into a way of editing the names after they’ve been saved too. Thanks, Tony

### 4/5 — Good app

*2024-08-15*

It’s a great app but needs updating to include addition wall and ceiling heat loss values then it will be even better. Please update 🤞

### 4/5 — Great app

*2020-08-21*

Better if you could enter measurements rather than the sliders.

### 5/5 — Brilliant

*2025-05-21*

Easy to use, and a very cheap price. Thanks 👍

### 5/5 — Awesome

*2020-08-13*

I truly enjoyed it & managed to make my calculations

### 5/5 — Great

*2019-04-17*

Really useful app.

## Most praised reviews (1 highest-rated)

### 5/5 — Handy little app

*2018-12-31*

Really useful, easy to use - now I know why my house is so cold all the time :)

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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 2026-08-26.*