Spray Day: Lawn Weed Timing

Wind & Rain Check to Apply

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Spraying weed killer or bug spray on your lawn? Spray Day checks live wind, rain timing, and temperature to tell you if now is a safe time to apply. Should you spray right now? Spray Day turns live weather into one clear answer - SPRAY, WAIT, or DON'T - for your specific lawn or garden product, based on its rainfast, wind, and temperature limits. Every weed killer, fungicide, and insecticide has its own rules: how long it needs to stay rain-free after you spray, how much wind causes drift onto a neighbor's plants, and the temperature range where it actually works instead of burning the grass. Cross-checking all of that against an hourly forecast, every time, for each product, is nobody's routine. HOW IT WORKS 1. Add your product: pick its type (weed killer, fungicide, insecticide, and more) or set your own rainfast, wind, and temperature limits. 2. Spray Day pulls the live hourly forecast for your location. 3. You get a single verdict - SPRAY, WAIT, or DON'T - with the reason and the confidence for right now. It takes 20 seconds to set up. No account required. CORE FEATURES Today's Verdict A single answer plus the why - next rain, wind with gusts, temperature, and inversion risk, read at a glance instead of pieced together from a weather app. Why This Answer Every verdict lists its reasons in plain language, like rain arriving before the product is rainfast, or wind above the drift limit. Current Conditions Temperature, wind, gusts, and time until the next rain in one simple view. PRO FEATURES Upgrade to Pro for deeper insights: - Save multiple product profiles with different limits - 5-day forecast that flags each open spray window per product - Spray-window alerts when conditions finally open - Temperature-inversion warnings - Unlimited application history - Wash-out and drift outcome tracking that tunes future timing - Custom rainfast, wind, and temperature thresholds PRIVACY FIRST - No account, no login - All data stored locally on your device - Location is used only to fetch the local forecast, never stored on any server - No tracking, no ads, no third-party analytics Spray Day provides informational timing guidance based on public weather data. The product label is the authoritative source for all application conditions - always read and follow it. This app does not guarantee results and is not liable for off-target movement. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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The developer, JUHWAN PARK, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

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    • Location

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Information

Seller
JUHWAN PARK
Size
30.6 MB
Category
Lifestyle
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 osk
  • Developer Website
  • Privacy Policy

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