Support
Questions, bugs, renovation ideas — email is the fastest way to a reply.
Questions, bugs, renovation ideas — email is the fastest way to a reply.
Yes. All calculations run locally — no measurement data leaves your device. Internet is only needed for the bottom banner ad and the one-time in-app purchase.
Yes. A one-time $3.99 purchase removes the banner for life. No subscription, no auto-renewal — works after a reinstall too.
No. Pay once, keep it forever. A subscription doesn't fit the one-off nature of a renovation.
Tiles (floor / wall / room modes), paint, wallpaper, concrete and insulation. Each comes with Polish-market defaults and is cross-validated against established renovation calculators.
Yes — in project mode. An aggregated material list across all calculators, in a single PDF you can take to the store or send to a contractor.
iPhone with iOS 16 or later, Android 7.0 (API 24) or later. The app is small and runs fine on older hardware.
Polish and English. Czech, Slovak and German are planned as those markets open.
λ values come from manufacturer datasheets (EPS 70 = 0.040, mineral rock wool = 0.035, PIR = 0.022). Polish WT 2021 requires external walls ≤ 0.20 W/m²K, roofs ≤ 0.15, ground floors ≤ 0.30.