Par Meter : PPFD Monitor
PPFD Meter For Your Plants
About
Measure light intensity for plant growth using your phone's sensor. Optimize indoor farming, hydroponics, and grow light setups by understanding PAR and PPFD levels. Improve plant health and yield with real-time data and saved measurements.
What's New in Par Meter
2.0
June 4, 2026
Minor Bug fixed New Features Added
Subscription plans
Yearly Pro
Unlock All Features For A Year
Developer apps
FAQ
What is Par Meter?
Par Meter is a mobile application designed to measure Photosynthetically Active Radiation (PAR) and Photosynthetic Photon Flux Density (PPFD) using your device's light sensor. It helps growers optimize lighting for their plants.
How accurate are Par Meter measurements?
Measurements depend on your device's light sensor and are intended for estimation and optimization purposes only. They are not for laboratory-grade accuracy.
What can I measure with Par Meter?
You can measure PAR, PPFD (µmol/m²/s), light intensity trends, and real-time sensor readings. The app also allows you to save measurements for comparison.
Does Par Meter require an account?
No, Par Meter does not require an account to use. It is designed with privacy in mind, collecting no personal data.
What are the subscription options for Par Meter?
Par Meter offers optional auto-renewable subscriptions including a weekly plan for $2.99, a monthly plan for $4.99, and a yearly plan for $29.99. These unlock advanced features and remove ads.
How do I cancel my Par Meter subscription?
You can manage or cancel your subscription at any time through your App Store settings. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period.
What devices is Par Meter compatible with?
Par Meter is available for iPhone and iPod devices. It is designed for iOS users looking to monitor plant lighting.
How often is Par Meter updated?
The latest version, 2.0, was released on June 4, 2026, indicating regular updates. The app was last updated on this date, suggesting ongoing development and support.
