Harden Off: Seedling Sun Timer

Transplant Move Outdoor Guide

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

Hardening off seedlings or bringing plants in? Get a daily move - minutes outside, sun or shade, bring in tonight - tuned to each plant and your local forecast. Moving a plant between indoors and outdoors? Harden Off turns today's forecast into one clear move for each plant - how many minutes outside, in sun or shade, and whether to bring it in tonight. A seedling that jumps straight from a grow light to full sun gets scorched. A tender plant left out on a cold night is lost. The safe path is gradual, and the right move changes every single day - a bright clear day means less time out, an overcast day means more, and a cold snap means keep it in. Most people track this with a phone alarm and still lose plants. HOW IT WORKS 1. Add your plant: its light tolerance, where it came from, frost sensitivity, and which way it's moving - setting out, bringing in, a new arrival, or a window change. 2. Harden Off reads your local forecast - sun, wind, high, and overnight low. 3. You get today's move: how long outside, sun or shade, bring it in tonight or not, and one line on why. About 20 seconds to set up. No account required. CORE FEATURES Today's Move One verdict per plant plus the reason - minutes outside, sun or shade, and a bring-in-tonight call, read at a glance instead of guessed. Four Move Types Spring set-out, fall bring-in, a newly shipped or store-bought plant, or a move to a brighter window - each on its own day-by-day path. Weather-Aware, Not a Fixed Timer The schedule bends to the day: shorter on bright days, longer when overcast, paused when frost or heat threatens. PRO FEATURES Upgrade to Pro for deeper insights: - Track many plants at once, each on its own stage - Frost and heat alerts ("bring 3 plants in tonight") - Daily bring-in and put-out reminders - 7-day exposure plan for each plant - Leaf-condition log that tunes each plant over time - Stage history and notes per plant PRIVACY FIRST - No account, no login - All data stored locally on your device - Location is used only to fetch your local forecast, never stored on any server - No tracking, no ads, no third-party analytics Harden Off provides general acclimation timing guidance based on horticultural rules of thumb and public weather data. Always watch your own plants and adjust as conditions change. 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 .

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Information

Seller
JUHWAN PARK
Size
31.6 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
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  • Privacy Policy

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