NectarIndex

Bloom & nectar flow forecast

Free · Designed for iPad. Not verified for macOS.

NectarIndex — Your Bloom Forecast Companion Are you a beekeeper wondering when the acacia, linden, or chestnut will bloom in your area? NectarIndex helps you anticipate nectar flow seasons so you can plan hive moves, honey supers, and inspections with confidence. The app uses real weather data from your location to calculate Growing Degree Days (GDD) from the start of the year, estimating the phenological stage of over 96 nectar-producing plant species. The result is a NectarIndex score — from 0 to 100 — giving you an intuitive read on the nectar potential for each plant in your area. WHAT YOU CAN DO WITH NECTARINDEX • See which plants are about to bloom near you • Track temperature accumulation with Growing Degree Days (GDD) • Use the bloom calendar to plan your season • Manually select any location on the map • Filter plants by Köppen climate zone • Explore a database of 96 nectar plant species across Europe and North America • Check integrated weather forecasts for the coming days BUILT FOR BEEKEEPERS EVERYWHERE NectarIndex includes both European and North American nectar species, with automatic continent detection based on your location. Whether you're in Italy, France, Germany, or the United States, you'll find the most relevant plants for your area. HOW IT WORKS The algorithm is based on Growing Degree Days (GDD), a well-established scientific method used in agronomy and phenology. Each species has a thermal bloom threshold: when the GDD accumulated at your location reach that threshold, the plant is approaching bloom. NectarIndex combines this with current and forecast weather conditions to calculate the final score. AN IMPORTANT NOTE NectarIndex is a support tool based on mathematical models and weather data. Forecasts are estimates and may vary depending on local conditions, altitude, exposure, and many other factors. The app's predictions are never a substitute for direct hive inspection and field observation. The best beekeeper is still the one who knows their bees! FREE, NO SUBSCRIPTION REQUIRED NectarIndex is free to use. Occasional unobtrusive ads help us keep the app updated and available for beekeepers everywhere.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

Fixed an issue where some autumn-blooming plants, such as Ivy (Hedera helix), were incorrectly shown as actively blooming during summer.

Version 1.2

The developer, FRANCESCO NOCENTINI, 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 Used to Track You

    The following data may be used to track you across apps and websites owned by other companies:

    • Location
    • Identifiers
    • Usage Data

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Identifiers
    • Usage Data

  • Data Not Linked to You

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

    • Location
    • Usage Data
    • Diagnostics

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
  • FRANCESCO NOCENTINI
Size
  • 81.9 MB
Category
  • Utilities
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Age Rating
4+
Copyright
  • © 2026 Francesco Nocentini
  • Developer Website
  • Privacy Policy

    • More by FRANCESCO NOCENTINI

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