# Spray Day: Lawn Weed Timing — Wind & Rain Check to Apply

> Wind & Rain Check to Apply (iPhone/iPad app by JUHWAN PARK.)

- Source: https://appshunter.io/ios/app/spray-day-lawn-weed-timing/id6786495616 (this page in markdown: same URL + `.md`)
- Developer: [JUHWAN PARK](https://appshunter.io/developer/1790125318)
- Category: Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 29 MB
- Languages: American English
- Released: 2026-07-07
- Data updated: 2026-07-21
- User reviews in markdown: https://appshunter.io/ios/app/spray-day-lawn-weed-timing/id6786495616/reviews.md

## What is Spray Day?

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/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro — Full Access | $4.99 | per month |



## Version history (last 1 release)

### 1.0 — 2026-07-08

No release notes.

## More apps by JUHWAN PARK

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- [Shift Workout: Night & 12 Hour](https://appshunter.io/ios/app/shift-workout-night-and-12-hour/id6760991758)
- [CPAP Comply: Insurance Tracker](https://appshunter.io/ios/app/cpap-comply-insurance-tracker/id6761286767)
- [CurlCast - Hair Weather Guide](https://appshunter.io/ios/app/curlcast-hair-weather-guide/id6761350441)

All apps by JUHWAN PARK: https://appshunter.io/developer/1790125318

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-21.*