Rainfall Cask Diary

Read your own rain gauge, log the millimetres, and see at a glance whether the beds need water and how full the barrel is - fully offline.

Rainfall Cask Diary is a quiet, practical journal for gardeners who keep a manual rain gauge. Walk out, read the cylinder, tap in the number. The app turns those daily readings into totals, charts, a soil water balance and a rain-barrel estimate.

LOG IN SECONDS
- Enter a daily gauge reading in millimetres or inches, with optional snow-water.
- Log today or any past day; a new reading for the same day replaces the old one.
- The Today tab shows an animated gauge cylinder filled to your last reading, with 7-day, 30-day and month totals.

SEE THE PATTERN
- Rolling 7- and 30-day totals plus weekly, monthly and seasonal aggregates.
- Dry spells - runs of consecutive days under 1 mm - appear as ochre bands on the chart, so a long gap between showers is impossible to miss.

KNOW WHEN TO WATER
- A soil water bucket for sand, loam or clay fills with rain, drains above capacity and dries by a monthly evaporation rate for your climate band.
- When the bucket drops below half, the app suggests watering and tells you the deficit in litres for your bed area.

FILL THE BARREL
- Roof catchment calculator: roof area x rain x runoff coefficient gives the litres flowing into your barrel.
- An animated barrel fills up to its capacity and shows the overflow when the rain outpaces it.

WHAT YOU GET
- Manual rain-gauge journal in millimetres or inches, with optional snow-water
- Daily, weekly, monthly and seasonal charts with dry-spell bands
- Soil water balance for sand, loam or clay with watering suggestions in litres
- Roof catchment calculator with an animated barrel that fills and overflows
- No account, no internet, no ads - your readings stay on your device

Five simple tabs - Today, Chart, Soil, Barrel and History - keep everything one tap away.

PRIVATE AND OFFLINE
Rainfall Cask Diary works fully offline and needs no internet connection at all. There are no ads, no sounds, no account and no sign-up. Your readings are stored only on your device.