GrowPAR
PPFD, DLI & Light Optimizer
Free · Designed for iPad. Not verified for macOS.
Turn your iPhone into a professional PAR meter. Measure PPFD, DLI & CCT for smarter plant growth. Free to try.
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
Turkish · English · German · Spanish · French · Italian · Portuguese · Russian · Japanese · Chinese · Arabic
Whether you're growing tomatoes, cannabis, microgreens, or orchids — GrowPAR gives you the data to grow smarter.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Halil Fatih Ozturk, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Halil Fatih Ozturk
- Size
- 6.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Halil Fatih Öztürk