GrowPAR
PPFD, DLI & Light Optimizer
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
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/
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
• Multiple eWeLink devices with roles (fan, heater, humidifier, dehumidifier)
• Native Apple Home daily light schedule that keeps running when the app is closed
• Camera aperture setting and per-device-model calibration for more accurate PPFD
• Privacy consent prompt for EU/UK users
• Stability improvements
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
- 11.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 6 more
- English, Arabic, French, German, Italian, Spanish, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- com.hfozturka.growparios.yearly $9.99
- com.hfozturka.growparios.monthly $2.99
- Copyright
- © 2026 Halil Fatih Öztürk