







About this app
What RainBook does
The rain gauge on the fence post is the most important instrument on the ranch. Grazing rotations, stocking rates, hay buys, and USDA drought-program files all trace back to what actually fell in your pastures — not what a radar pixel guessed from forty miles away. RainBook is the offline logbook for those physical gauges: every gauge you run, every reading you take, kept in one dated record that is ready when the county office asks for it. Add each gauge once — Headquarters, North Pivot, Creek Crossing — and group them by pasture. On gauge-checking day, logging a reading takes two taps: pick the gauge, dial in the tenths, done. Trace amounts, empty checks, and hail or storm notes are all first-class entries, so the record shows the dry spells as clearly as the wet ones. There is no account, no sync, and no signal required — the far gauge on the back section logs exactly the same as the one by the house. The payoff comes at decision time. Water-year and calendar-year totals run per gauge and per pasture, side by side with last year and with the normal you set for your place, so you can see a failing season developing in June instead of admitting it in September. When Livestock Forage Disaster Program deadlines or Pasture, Rangeland, Forage insurance decisions come around, RainBook assembles your readings into a dated rainfall record — a clean, chronological document of what your gauges actually caught, built for the folder you hand the Farm Service Agency office, your insurance agent, or your own files. Pasture condition notes with photos ride along as supporting evidence. Radar apps estimate. Ranch platforms charge every month for a hundred features you do not need. The feed-store calendar fades. RainBook does one job completely: it is the permanent, portable record of your rain — every gauge, every tenth, every year. • Unlimited physical rain gauges with two-tap readings • Pasture groups that roll gauges up by grazing unit • Water-year and calendar-year totals with year-over-year comparison • Season-versus-normal tracking against the baseline you set • Dated rainfall-record document for FSA, LFP, and PRF files • Pasture condition notes with photos as supporting evidence • CSV backup of every reading • Fully offline — no account, no subscription, no signal needed
Features
Built to be useful, not noisy.
Gauge Logbook
Every physical gauge on the place gets its own dated reading history. A two-tap entry flow tuned for gauge-checking day handles tenths, trace amounts, and empty checks, entirely offline.
Pasture Groups
Group gauges by pasture or grazing unit and see rainfall roll up per pasture, so rotation and stocking calls are made on the water that pasture actually caught.
Water-Year Analytics
Water-year and calendar-year totals per gauge and per pasture, compared against last year and the normal the producer sets — the failing-season early warning that drives destocking and hay decisions.
Rainfall Record Export
Assembles any date range into a dated, chronological rainfall record as a PDF plus CSV backup — built for FSA/LFP program files and PRF insurance interval decisions.
Condition Notes
Dated pasture-condition notes with photos — forage state, pond levels, hail damage — the supporting evidence that rides alongside the rain record in program files.
Why it exists
The problem
Ranch decisions and USDA drought-program files (LFP, PRF) lean on the producer's own rain-gauge records, but those records live on a feed-store calendar. Popular apps are radar estimates rather than the producer's gauges, cap free gauges at two, meter gauges behind IAP tiers, or bundle rainfall into monthly ranch SaaS…
What's different
How RainBook stands out
RainDrop is a radar-derived virtual gauge that needs a signal and caps free users at two locations; Rain Tally is single-location homeowner tracking; Mobble and AgriWebb bury rainfall inside monthly-subscription ranch SaaS; CoCoRaHS is internet-required single-station citizen science. The small paid diaries that do lo…
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All apps →FAQ
Questions about RainBook
How much does RainBook cost?▾
RainBook is free. All features are included from day one — no subscription, no in-app purchases, no paid tiers. Everything you see in this listing works the moment you install it.
Where does RainBook store my data?▾
On your device. RainBook is built privacy-first: no account is required, no analytics SDKs, no third-party trackers. Nothing is uploaded to a server we control — the app works without one.
What platforms does RainBook support?▾
iOS, on iPhone and iPad. You can find the latest availability on this page.
How do I get support for RainBook?▾
Use the Support link on this page, or email support@allthingsn.com. We answer every message and keep responses on the same thread.






