# Par Meter : PPFD Monitor — PPFD Meter For Your Plants > Mobile light meter for plant growers measuring PAR and PPFD. (iPhone/iPad app by CODIGITAL SOLUTIONS - FZCO.) - Source: https://appshunter.io/ios/app/par-meter-ppfd-monitor/id6757111998 (this page in markdown: same URL + `.md`) - Developer: [CODIGITAL SOLUTIONS - FZCO](https://appshunter.io/developer/1829802387) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 4.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 13.0 · 35 MB - Languages: English - Released: 2026-01-06 - Data updated: 2026-07-16 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/par-meter-ppfd-monitor/id6757111998/reviews.md ## What is Par Meter? PAR Meter for Accurate Plant Lighting PAR Meter helps growers measure PAR and PPFD light intensity using your phone’s light sensor to optimize plant growth, indoor farming, and grow light setups. Designed for growers, hydroponics users, and indoor plant enthusiasts, the app provides fast and easy insights into the light levels plants actually use. What You Can Measure PAR (Photosynthetically Active Radiation) PPFD (µmol/m²/s) Light intensity trends Real-time sensor readings Saved measurements for comparison Why PAR & PPFD Matter Plants do not use brightness measured in lux. They use PAR and PPFD. With PAR Meter you can: Adjust grow light height Optimize LED grow light setups Avoid under-lighting or light stress Improve plant health and yield Ideal For Indoor plant growers Hydroponics systems LED grow light setups Home gardening Grow tents and greenhouses Simple & Practical Clean and intuitive interface Real-time readings No external hardware required Designed for fast decision-making Important Note Measurements depend on your device’s light sensor and are intended for estimation and optimization purposes only, not for laboratory-grade accuracy. Privacy First No account required No personal data collected Transparent privacy policy and term of use Privacy Policy : https://sites.google.com/view/optigrowapp/home Term Of Use : https://sites.google.com/view/optigrowtermofuse/home Subscriptions & In-App Purchases PAR Meter offers optional auto-renewable subscriptions to unlock advanced features and remove ads: Weekly subscription: $2.99 Monthly subscription: $4.99 Yearly subscription: $29.99 Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. You can manage or cancel your subscription at any time through your App Store settings. Upgrade Your Experience Unlock advanced tools and enjoy an ad-free experience with subscription Plans ## Key features - Measure PAR and PPFD - Real-time sensor readings - Light intensity trends - Saved measurements - Optimize grow light setups - No external hardware needed ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Yearly Pro | $29.99 | per year | | Weekly Pro | $3.99 | per 7 days | | Pro Monthly | $4.99 | per month | ## Frequently asked questions about Par Meter ### 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. ## Version history (last 2 releases) ### 2.0 — 2026-06-04 Minor Bug fixed New Features Added ### 1.0 — 2026-01-06 No release notes. ## Apps similar to Par Meter | App | Rating | Price | Category | | --- | --- | --- | --- | | [PPFD METER - Grow Light Meter](https://appshunter.io/ios/app/ppfd-meter-grow-light-meter/id6479329051) | 4.7 (87) | Free | Utilities | | [Plant Light Meter: Lux & PPFD](https://appshunter.io/ios/app/plant-light-meter-lux-and-ppfd/id1628111038) | 1.7 (11) | Free | Utilities | | [Grow Calc: Plant Light Meter](https://appshunter.io/ios/app/grow-calc-plant-light-meter/id6751297015) | — | Free | Utilities | | [MoeuPLTest](https://appshunter.io/ios/app/moeupltest/id6757464940) | — | Free | Utilities | | [uSpectrum PAR](https://appshunter.io/ios/app/uspectrum-par/id1466017397) | 1.0 (2) | Free | Utilities | | [VPD Chart](https://appshunter.io/ios/app/vpd-chart/id6470015847) | 4.5 (26) | Free | Utilities | ## More apps by CODIGITAL SOLUTIONS - FZCO - [Photo To Pdf ; Pdf Converter](https://appshunter.io/ios/app/photo-to-pdf-pdf-converter/id6749807671) - [SPL Meter : dB Noise Tool](https://appshunter.io/ios/app/spl-meter-db-noise-tool/id6751081307) - [Lux Meter: Light Camera Cine](https://appshunter.io/ios/app/lux-meter-light-camera-cine/id6751212956) - [Stud Finder : Joist Detector](https://appshunter.io/ios/app/stud-finder-joist-detector/id6751670692) - [Window Tint Meter – VLT Meter](https://appshunter.io/ios/app/window-tint-meter-vlt-meter/id6757194952) All apps by CODIGITAL SOLUTIONS - FZCO: https://appshunter.io/developer/1829802387 ## Related topics [par meter free](https://appshunter.io/ios/topics/par-meter-free) · [ppfd](https://appshunter.io/ios/topics/ppfd) · [ppfd meter](https://appshunter.io/ios/topics/ppfd-meter) · [par meter](https://appshunter.io/ios/topics/par-meter) · [ppfd free](https://appshunter.io/ios/topics/ppfd-free) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-16.*