F-Droid users: since version 1.6.2, the app is signed by its developer. If the update won't install, export your data, reinstall, then import it. Record your water, gas, electricity and heating oil meters, and see where your year is heading. READINGS IN SECONDS • Photograph the meter: the reading is recognised automatically, on the phone, offline (not in the F-Droid version). • The app checks the reading: a meter never goes backwards, and a serial number is not mistaken for a reading. • Reading reminders, as often as you like. • After each reading: what it changes in the forecast, and your use compared with what the weather suggested. FORECAST YOUR YEAR • Forecast of your consumption up to your next annual reading, or to 31 December. • For heating, the forecast follows the weather: a mild autumn is not extrapolated onto January. • Estimated cost, from your tariffs. COMPARE AT EQUAL WEATHER • Each year is corrected for how cold it was, using degree days: a drop caused by a mild winter no longer looks like a saving. • Energy signature: see how much your house uses per degree of cold, and the effect of insulation. • Forecast accuracy: replay a past year to see what the app would have announced. YOUR DATA STAYS WITH YOU • No account, no server, no ads. • All data stays on the phone; only the house's location is sent to Open-Meteo for the weather. • Excel export and import: back up to Google Drive or elsewhere, bring in an existing history. AND ALSO • Several houses, meter replacement, dual-rate meters, tariffs and events (insulation, works…). • Heat cost allocators: one line per radiator with its factor, annual resets included. • Prepaid meters: read the balance, note your purchases, and the app works out your usage. • Heating oil tank with a gauge: read the level, note your deliveries. • Points to check: the app spots readings that were probably mistyped. • Charts: year to date, monthly consumption, year comparison, climate. • Available in English, French and Dut