Terra: Weather-Based Gardening

Track Outdoor Plant Water Loss

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

Turn local weather into plant watering guidance. Physics-based evapotranspiration modeling, five-day projections, and beautiful Home Screen widgets. Your garden changes with the weather. Plant water loss changes throughout the day with temperature, humidity, wind, solar energy, and rainfall. Different plants respond to the same atmosphere in different ways. A tomato and a rosemary plant should not be treated as though they have identical water-use patterns. Terra combines local weather, modeling of evaporation and transpiration rates, and plant-specific profiles to estimate how much water outdoor plants lose to the atmosphere. Track modeled water reserve, explore how it may change over the next five days, and use the forecast as added context before deciding when to water. Add vegetables, fruit, herbs, trees, vines, container plants, raised beds, and in-ground plants across multiple locations. FIVE-DAY GARDEN FORECAST Terra projects each plant’s modeled reserve across the next five calendar days using hourly forecast weather, plant-specific crop coefficients, and chronological rain estimates. View: • Daily temperature, humidity, wind, solar energy, and rain • Current and end-of-forecast reserve • Daily reserve estimates • Likely watering windows based on each plant’s threshold • Rain and no-rain scenarios when uncertainty matters Forecasts are projections only. Observed conditions replace estimates as time passes. HOME SCREEN WIDGETS Keep garden conditions visible without opening the app. • Small widget: today’s weather, a five-day summary, and threshold notices • Medium widget: atmospheric data with multiple plant projections • Large widget: atmospheric conditions, weather cards, and five-day plant forecasts • Log Watering from plant widgets PRIVATE BY DESIGN No account. No sign-in. No continuous location tracking. Terra uses only the garden locations you choose. Your plants, watering history, notes, and modeled reserve data remain tied to your app experience rather than a social profile. Includes 14 days of free access. No sign-up required. AT A GLANCE • Estimated Water Reserve for every plant • Five-day plant reserve projections • Hourly weather-based evapotranspiration calculations • Temperature, humidity, wind, rain, and modeled solar energy • More than 200 plant-specific crop-coefficient presets • Growing-environment, soil-texture, root-depth, and sun-exposure profiles • Chronological rain credit and rain-uncertainty scenarios • Log Thorough Watering with watering history • Small, medium, and large Home Screen widgets • Multiple locations and manual coordinates • Customary and metric units • Color themes BUILT AROUND THE WEATHER Terra considers temperature, relative humidity, wind, cloud cover, precipitation, sun position, time of day, season, latitude, longitude, terrain elevation, sun exposure, and each plant’s crop coefficient. Reference evapotranspiration is modeled with the FAO-56 Penman–Monteith framework, WeatherKit data, and modeled solar radiation. Plant-specific crop coefficients translate atmospheric demand into estimated plant water loss. MODELED SOLAR ENERGY Incoming solar radiation is modeled from sun position, location, date and time, terrain elevation, and cloud cover. The same value is used in the evapotranspiration calculation, displayed in the app, and synchronized to widgets. A MODEL, NOT A SENSOR Terra does not measure soil moisture. Estimated Water Reserve is a meteorological and physics-based model, not a direct reading from your soil or plant. Use it alongside your own observation of the plant, soil, and growing environment. Terra cannot account for every site-specific process, including runoff, canopy interception, deep drainage, container geometry, overhead shelter, infiltration, root restrictions, or water applied. Use Terra as decision support, not as a substitute for checking your plants and soil. Garden with the weather, not just the calendar. Terms of Use (EULA): [https://www.apple.com/legal/internet-services/itunes/dev/stdeula/](https://www.apple.com/legal/internet-services/itunes/dev/stdeula/)

Ratings & Reviews

  • 5.0
    out of 5
    2 Ratings

Terra 2.0.2 includes everything introduced in Terra 2.0.1, along with additional improvements to soil setup, notifications, and Home Screen widget reliability. • Follow each plant’s estimated water reserve across the next five days • See daily temperature, humidity, wind, solar energy, and rainfall • View likely watering timing based on your selected reserve thresholds • Keep current conditions and plant projections visible with redesigned small, medium, and large Home Screen widgets • Log watering directly from supported widgets • Navigate between Garden and Forecast views for a clearer picture of current and upcoming conditions • Choose soil using clearer, everyday descriptions based on texture, drainage, and feel • Receive one early watering reminder per plant without repeated notifications until watering is logged • Keep multiple Terra widgets synchronized when a plant is watered • Enjoy improved plant details, location summaries, performance, visual consistency, and forecast reliability This update includes the complete five-day garden forecast introduced in Terra 2.0.1, powered by physics-based evapotranspiration modeling.

Version 2.0.2

The developer, Dao Nguyen, 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 Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Dao Nguyen
    Size
    • 52.4 MB
    Category
    • Lifestyle
    Compatibility
    Requires iOS 26.2 or later.
    • iPhone
      Requires iOS 26.2 or later.
    • iPad
      Requires iPadOS 26.2 or later.
    • Mac
      Requires macOS 26.2 or later and a Mac with Apple M1 chip or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    • Terra Lifetime Access $29.99
    • Terra Premium Monthly Subscription $2.99
    • Learn More
    Copyright
    • © 2026 Dao Nguyen
  • Developer Website
  • Privacy Policy

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