Meet Spraybook — Orchard spray log & PHI timers

Lifestyle

Spraybook

Orchard spray log & PHI timers

What Spraybook does

Every backyard orchard has the same notebook: chemical-stained, half the entries just say sprayed apples, and nobody can answer the only question that matters in August — are the peaches safe to pick yet?

Spraybook replaces that notebook. It is an offline spray logbook built for people who grow fruit at home or sell at a market stand: a few apple trees, a row of peaches, some brambles, and a backpack sprayer.

Log a spray in seconds: pick the product from your shelf, pick the trees or the block you covered, and Spraybook stamps the date, rate, and growth stage. From that single entry it computes the two numbers every label demands you track — the re-entry interval (REI), when it is safe to work under those trees again, and the pre-harvest interval (PHI), when the fruit is safe to pick. Both become live countdowns on your dashboard, per tree and per product, so the safe-to-pick question is a glance instead of a guess.

Then there is spray-day algebra. Labels give rates per acre or per 100 gallons; you have a 4-gallon backpack. Spraybook's mix calculator converts any label rate into exact ounces, tablespoons, or grams for your tank size, and remembers your sprayer so next time it is one tap. Always read and follow your product label — Spraybook keeps the arithmetic honest so you can.

A season schedule keeps mixed plantings straight: generic growth-stage timing (dormant, green tip, petal fall, cover sprays) per crop, so your apples, peaches, and grapes each get the right pass at the right stage without a shoebox of extension PDFs.

Everything lives on your device. No account, no subscription, no enterprise farm-management login — because a 15-tree orchard should not need one. When a market inspector or your own memory asks what went on the Honeycrisps in June, the answer is one search away, and the whole season exports as a clean spray record.

• Per-tree and per-block spray logbook with product, rate, and growth stage • Automatic REI re-entry and PHI safe-to-pick countdowns from every logged spray • Mix calculator: label rates per acre or per 100 gallons converted to your backpack tank • Product shelf that stores REI and PHI once per product • Growth-stage season schedules for mixed home orchards • Season spray-record export for market-stand record keeping • Fully offline, no account, your records stay yours

A look inside

Tap any screenshot to open the full-resolution version.

What's inside

• Spray Logbook — Log an application in seconds: product from your shelf, the trees or block covered, rate, tank size, growth stage, and weather note. Every tree keeps its own searchable spray history.
• Safe-to-Pick Dashboard — Every logged spray automatically produces two live countdowns — REI (safe to re-enter and work) and PHI (safe to harvest) — shown as playful progress rings per tree and per product on the home dashboard.
• Backpack Mix Calculator — Converts label rates given per acre or per 100 gallons into exact ounces, tablespoons, or grams for your actual tank size, with saved sprayer profiles and a persistent follow-the-label reminder.
• Orchard & Blocks — Your trees, organized into blocks (Front Yard, Back Slope). Each tree card shows crop, variety, year planted, active countdowns, and full spray history.
• Product Shelf — Enter a product once — name, active ingredient, REI hours, PHI days, default label rate — and every future log entry and countdown reuses it.
• Season Schedule — Generic growth-stage timing checklists per crop (dormant, green tip, pink, petal fall, cover sprays) so mixed plantings each get the right pass at the right stage. Timing guidance only, never product recommendations.

Why we built it

Home orchardists must time 6-10 sprays a season across mixed trees, then remember what was sprayed where, when it is safe to re-enter (REI), and when fruit is safe to pick (PHI) — and convert per-acre label rates to backpack-sprayer doses. Today this lives in stained notebooks and extension PDFs; the only software alt…

What makes it different

Croptracker and AgSquared are enterprise SaaS priced for commercial packing operations; Vinifera is vineyard-only and subscription-cloud; Farmable gates REI warnings behind a $399/yr tier with a 5-job free cap; Leaftide, the top home-orchard app, has no spray diary at all; Penn State's free option is a desktop Excel s…

Who it's for

Hobbyists who want a tool that respects their time, their gear, and their offline life.

In one line: Orchard spray log & PHI timers

Try it

See the Orchard spray log & PHI timers for the full feature list, the info table, and support links.

Use Spraybook, found a bug, or have a feature request? Comments are open below — anonymous is fine.