SoilIQ – Soil Temperature

Know when to plant and water

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

Seed by soil, not by season. Grass seeding and pre-emergent windows open when your soil says so, not when the calendar does. Stop guessing. Plant by soil. SoilIQ™ tells you when to seed, plant, water, mow, protect, or wait, using the two numbers that actually decide what happens in your ground. Air temperature tells you how the day feels. Soil temperature and soil moisture decide whether seed germinates, whether roots grow, whether a pre-emergent barrier holds, and whether today's watering helps or hurts. SoilIQ helps you look below the surface. KNOW MY LAWN Build your Lawn Profile with grass type, sun exposure, irrigation, soil type, drainage, foot traffic, current condition, and a custom lawn name. Today's Lawn Read combines your Lawn Profile with soil data and forecast trends into one prioritized recommendation on the Today tab. Tap it to see why it triggered and what to do next. SOIL AWARE WATERING The same moisture reading means opposite things in sand and in clay. SoilIQ measures root zone moisture against your own soil's wilting point and field capacity, so dry means dry for your ground. Forecast rain is weighed against evapotranspiration and weighted by probability, so a light chance is not banked as a soaking. When the root zone is holding all it can, SoilIQ tells you to wait. SOILIQ CALCULATOR Plan what to buy. Measure what to apply. - Product Rate Calculator - Nitrogen Calculator - Grass Seed Calculator - Mulch, Soil & Sand Calculator Save calculations to your Journal, share image cards, or log results as lawn activity. LAWNIQ LawnIQ™ is a soil-powered lawn advisor built into SoilIQ. It turns soil temperature, soil moisture, forecast trends, your lawn profile, and recent activity into clear guidance. Use LawnIQ to understand: - When to mow - When to water, and when to wait - When to seed or overseed - When heat stress may become a concern - When rain may change your plan - When pre-emergent timing windows may be approaching LAWN ACTIVITY & FIELD JOURNAL Log mowing, watering, overseeding, fertilizing, aerating, pre-emergent, rain, field notes, photos, and seasonal observations. SOIL TEMPERATURE AT MULTIPLE DEPTHS Readings at 2, 6 and 21 inches, calculated to exactly those depths. Seeds germinate near the surface. Roots live below. 14-DAY SOIL FORECASTS Soil temperature trends for seeding, planting, watering, and frost protection. HISTORICAL GDD TRACKING Tracked crop Growing Degree Days calculate from the actual planting date using historical weather data, not just the forecast window. PLANTAI FOR 160+ CROPS PlantAI™ helps you understand crop-specific planting readiness using soil temperature, forecast conditions, frost risk, moisture, and timing windows. Crops started from seed get a soil temperature verdict. For the rest, SoilIQ says so plainly rather than inventing an answer. SAVED LOCATIONS & PROBE CALIBRATION Track conditions across your lawn, garden, plot, farm field, or client site. Calibrate readings against your own soil probe, per location and depth. APPLE WATCH, SIRI, WIDGETS & LIVE ACTIVITIES Check soil temperature from your wrist, ask Siri without opening the app, and pin readings to your Home Screen, Lock Screen, and Live Activities. PRIVACY-FIRST No account required. Your location is used only to fetch soil and weather data. SoilIQ does not sell your data, and core features work offline from cached readings. Export your full history at any time, because your records are yours. SOILIQ PRO Upgrade to unlock: - SoilIQ Calculator - LawnIQ lawn guidance - Lawn Profile and Today's Lawn Read - PlantAI guidance for 160+ crops - 14-day soil forecasts - Historical GDD tracking - Soil aware watering guidance - Field Journal and Lawn Activity tracking - Saved locations and probe calibration - Smart alerts and reminders - Apple Watch soil and LawnIQ insights Feedback: hello@soiliq.app SUBSCRIPTION TERMS Free features stay free forever. SoilIQ Pro auto-renews monthly or annually and can be canceled anytime in Apple ID settings. LEGAL Terms: https://www.soiliq.app/terms Privacy: https://www.soiliq.app/privacy

  • 5.0
    out of 5
    15 Ratings

SoilIQ 2.5.1: Accuracy and Reliability This release is about being right. Every change below either corrects something the app was telling you, or makes sure that what you saved stays saved. What's new: - Honest answers in PlantAI: crops that are not started from seed no longer show a planting readiness verdict that never applied to them. Where soil temperature is not the deciding factor, SoilIQ says so - Right depth, right crop: planting readiness is judged at the depth that matters for each crop, not the depth you happen to be viewing. A shallow-sown crop and a deep-sown crop no longer share a verdict - Your Data now lives in Settings under About, where you would look for it - Data export includes your saved calculations, and the export summary describes exactly what is in the file Fixes and improvements: - Fixed a crash that could occur when opening a saved calculation - Lawn Profile changes now save reliably. A change could previously be reported as saved without being written - Soil texture is read fresh for each location instead of carrying over from the last place you viewed, which affected watering and moisture guidance - What's New shows the notes for the version you just installed, and no longer appears the first time you open the app - Reliability improvements to how your information is loaded and saved Stop Guessing. Plant by Soil.

The developer, Teddy Mutterperl, 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

    The developer indicated that this app supports the following accessibility features. Learn More

    • Supported Features

      • VoiceOver

      • Larger Text

      • Dark Interface

      • Reduced Motion

    Seller
    • Teddy Mutterperl
    Size
    • 21.3 MB
    Category
    • Weather
    Compatibility
    Requires iOS 17.6 or later.
    • iPhone
      Requires iOS 17.6 or later.
    • iPad
      Requires iPadOS 17.6 or later.
    • Mac
      Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.3 or later.
    • Apple Watch
      Requires watchOS 10.6 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    • SoilIQ Pro Monthly $4.99
    • SoilIQ Pro Annual $29.99
    Copyright
    • © 2026 SoilIQ