GrowPAR

Measure light for your plants, match the right species, and automate your grow lights with Apple Home. PPFD, LUX, DLI & VPD — all in one app!

GrowPAR turns your iPhone into a professional-grade PAR light meter for indoor growing, hydroponics, and plant research.

What is PAR? Photosynthetically Active Radiation (PAR) measures the light your plants actually use for photosynthesis — between 400–700nm. Unlike lux meters, GrowPAR measures what matters most to your plants.

KEY MEASUREMENTS

• PPFD (μmol/m²/s) — Instant photon flux density
• DLI (mol/m²/day) — Daily Light Integral for growth optimization
• CCT (Kelvin) — Color temperature of your light source
• Lux — Illuminance measurement

PLANT INTELLIGENCE GrowPAR includes a database of 36+ plants with scientifically accurate targets:

• Stage-based PPFD targets: Seedling → Vegetative → Flowering → Harvest
• Ideal temperature (day/night), humidity, and CO₂ levels
• Hydroponics parameters: pH range and EC values
• LED distance and photoperiod recommendations
• Real-time sufficiency indicator: Is your light enough?

LIGHT SOURCES Calibrated for all grow light types:

• Full Spectrum LED • Red/Blue LED • HPS • CMH • Natural Sunlight

MEASUREMENTS & HISTORY

• Save unlimited measurements with timestamp
• Filter by plant and light source
• Export to CSV for analysis

CALIBRATION Use with Apogee MQ-500 or similar quantum sensor for research-grade accuracy.

11 LANGUAGES English · German · Spanish · Turkish · French · Italian · Portuguese · Russian · Japanese · Chinese · Arabic

Whether you're growing tomatoes, microgreens, or orchids — GrowPAR gives you the data to grow smarter. Privacy Policy: https://hfozturka.github.io/growpar/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/