
GrowPAR
PPFD, DLI & Light Optimizer
0 ratings
Free
About
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/
Show more
+1
What's New in GrowPAR
1.9
August 2, 2026
Smart Home integration: control your Apple Home (HomeKit) plugs from GrowPAR and automate your grow lights based on DLI targets. Added sunlight guide, VPD calculator, growth journal, and custom plant support. Bug fixes and performance improvements.
More






