RadiatorOutput is the household name in radiateur, but it's far from the only option. We track 64+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
Calculate radiator heat output based on water and air temperatures. Ensure optimal energy efficiency and cost savings by selecting the correct radiator size for any heating system, including those with low water temperatures. Supports metric units and can also calculate cooling output for convectors and fan-coils.
Control your home's heating remotely and optimize energy consumption. Set personalized schedules, adjust temperatures room-by-room, and track your usage. Features like Auto-Adapt and Open Window Detection help save energy without sacrificing comfort.
What We Love
👍 Easy to use and intuitive interface
🌡️ Effective remote heating control from anywhere
⚡ Simple installation process
💰 Helps reduce energy bills and heating costs
Room to Improve
🐛 Frequent connection loss and reconnection issues
Yes — 20 of the top radiateur apps we rank are free to download, including RadiatorOutput and Netatmo Energy.
Does RadiatorOutput have ads or in-app purchases?
RadiatorOutput has no ads and has no in-app purchases, according to its App Store listing as of June 2026.
How many radiateur apps are on the App Store?
We track 64+ radiateur apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.
What is RadiatorOutput used for?
RadiatorOutput is used to quickly calculate a radiator's heat output at different water and air temperatures. This helps ensure you select the correct radiator size for optimal energy efficiency and cost savings in your heating system.
Does RadiatorOutput support imperial units?
No, RadiatorOutput currently only supports metric units for all calculations. This is noted in the app's description.