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Best Par Meter Apps

248+ iOS apps curated and reviewed

4.2 avg rating
20 free apps
Updated July 2026

If you already know Photone, this is the deeper bench. 248+ par meter apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of July 2026.

Compare top Par Meter Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Photone - Grow Light MeterPhotone - Grow Light MeterFree4.6★ (4.9K)NoYesJul 2026
2PPFD METER - Grow Light MeterPPFD METER - Grow Light MeterFree4.7★ (87)YesYesJul 2026
3Light Meter LM-3000Light Meter LM-3000Free4.5★ (2.5K)NoYesJul 2026
4VIVOSUNVIVOSUNFree4.7★ (8K)NoNoJul 2026
5Par Meter : PPFD MonitorPar Meter : PPFD MonitorFree4.0★ (1)NoYesJul 2026
6uSpectrum PARuSpectrum PARFree1.0★ (2)NoNoMay 2026
7Lux Light Meter ProLux Light Meter ProFree3.9★ (5K)YesYesJul 2026
8Lux Meter: Light Camera CineLux Meter: Light Camera CineFree5.0★ (9)NoYesJun 2026

Top Picks for Par Meter

Photone - Grow Light Meter#1

Photone - Grow Light Meter by Lightray Innovation GmbH

Perfectly light your plants!
Editor's Choice
🔧 Utilities
4.6😐(4.9K ratings)
FreeIn-App Purchases
Photone - Grow Light Meter screenshot 1
Photone - Grow Light Meter screenshot 2
Photone - Grow Light Meter screenshot 3
Photone - Grow Light Meter screenshot 4
Photone - Grow Light Meter screenshot 5
Photone - Grow Light Meter screenshot 6

This app acts as a professional-grade light meter for plants, measuring PAR, PPFD, DLI, and more using your device's camera. It helps optimize plant lighting by providing accurate readings and in-app guides, with optional advanced features available through purchase.

What We Love

  • 🚀 Accurate readings
  • 💡 Helpful for growing plants
  • 👍 Easy to use
  • 🚀 Saves money compared to expensive meters

Room to Improve

  • 🐛 Inconsistent readings
  • 💰 Expensive in-app purchases
  • 🔒 Requires additional equipment (diffuser) to work properly
PPFD METER - Grow Light Meter#2

PPFD METER - Grow Light Meter by Candas Pamukcu

LUX, PAR, PPFD, DLI & PAR Maps
Strong Contender
🔧 Utilities
4.7(87 ratings)
FreeAdsIn-App Purchases
PPFD METER - Grow Light Meter screenshot 1

This app measures light intensity for plants, converting LUX to PPFD and DLI. It offers advanced light mapping, uniformity analysis, and efficiency insights to optimize plant growth. Customize profiles for different environments and growth stages.

Light Meter LM-3000#3

Light Meter LM-3000 by Lightray Innovation GmbH

Simple & accurate measurement!
Worth Considering
🔧 Utilities
4.5😐(2.5K ratings)
FreeIn-App Purchases
Light Meter LM-3000 screenshot 1
Light Meter LM-3000 screenshot 2
Light Meter LM-3000 screenshot 3
Light Meter LM-3000 screenshot 4

Transform your smartphone into a professional light meter. Measure illuminance and color temperature with scientifically validated accuracy, trusted by professionals. Requires a simple diffuser for precise readings.

What We Love

  • 👍 Great app
  • 👍 Accurate measurements
  • 👍 Easy to use
  • 👍 Helpful customer service

Room to Improve

  • 🐛 Requires diffuser for accurate readings
  • 💰 Expensive for a light meter app
  • 🔋 Battery/trial period issues

More Par Meter apps to explore

4
VIVOSUN
VIVOSUN
VIVOSUN
All for grow
Free

Automate and simplify plant care with this app. Monitor environmental conditions, manually control grow equipment, and track plant progress. It helps optimize growth and manage schedules for a better growing experience.

Real-time environmental monitoringManual control of grow devicesAutomated grow recipes
🔧 Utilities
(8K)
free
5
Par Meter : PPFD Monitor
Par Meter : PPFD Monitor
Par Meter : PPFD Monitor
PPFD Meter For Your Plants
Free

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.

Measure PAR and PPFDReal-time sensor readingsLight intensity trends
🔧 Utilities
(1)
freemium
6
uSpectrum PAR
uSpectrum PAR
uSpectrum PAR
by United Power Research Technology Corporation
Free

This application connects wirelessly to a handheld spectral PAR meter, allowing remote analysis and configuration of light sources. It displays detailed spectral data, light source information, and absorption metrics, with options to save and share measurements.

Wireless Bluetooth connectionRemote light source analysisSave captured data
🔧 Utilities
(2)
free
7
Lux Light Meter Pro
Lux Light Meter Pro
Lux Light Meter Pro
Measure Luminosity in Lux & FC
Free

Measure light intensity in lux and foot candles with this 2-in-1 meter. Optimize photography settings, adjust indoor lighting, or prevent eye strain with professional-quality readings directly from your smartphone.

Real-time lux and foot candle measurementsReal-time color temperature measurementsReal-time histogram plotting
🔧 Utilities
(5K)
free with in-app purchases
8
Lux Meter: Light Camera Cine
Lux Meter: Light Camera Cine
Lux Meter: Light Camera Cine
Lux Meter – Pro Light Meter
Free

This app transforms your iPhone into a professional light and exposure meter. It provides real-time light measurements with EV feedback, allowing photographers and filmmakers to achieve perfect exposure. Advanced features like spot metering and histograms offer professional-grade control.

Real-time light measurementLive EV feedbackSave and compare exposure history
🔧 Utilities
(9)
freemium
9
RPM Meter: Stroboscope
RPM Meter: Stroboscope
RPM Meter: Stroboscope
Tachometer & Strobe Light
Free
🔧 Utilities
(0)
10
Krisbow meter
Krisbow meter
Krisbow meter
by KRISBOW INDONESIA, PT
Free
🔧 Utilities
(0)
11
Dial Meter Trainer
Dial Meter Trainer
Dial Meter Trainer
Learn to read dial meters
Free
📚 Education
(0)
12
FlowTap BPM Meter
FlowTap BPM Meter
FlowTap BPM Meter
A simple tap BPM meter
Free
🎵 Music
(0)
13
MeterSnap - Meter Reading
MeterSnap - Meter Reading
MeterSnap - Meter Reading
Intelligent Meter Reader
Free
💼 Business
(0)
14
Candela: Light Meter
Candela: Light Meter
Candela: Light Meter
by Snizhana Babytska
Free
🔧 Utilities
(0)
15
Uniks Meter
Uniks Meter
Uniks Meter
by UNIKS SRL
Free
🔧 Utilities
(0)
16
LUX - Illuminance Meter
LUX - Illuminance Meter
LUX - Illuminance Meter
by koji torishima
Free

Measure ambient light levels in lux or foot-candles instantly. Useful for photography, plant care, or verifying brightness for various tasks. Offers advanced features like color temperature and measurement history for premium users.

Instant lux measurementColor temperature (CCT) readingFoot-candle unit toggle
📊 Productivity
(0)
free with in-app purchases
17
LIT Light Meter
LIT Light Meter
LIT Light Meter
Remote control and data saving
Free

This companion app allows users to remotely control and save data from the LIT DUO 1 light meter. It enables firmware updates via Bluetooth, enhancing the functionality of the connected device.

Remote control for LIT DUO 1Firmware updates via BluetoothData saving capabilities
🔧 Utilities
(3)
free
18
LUX Meter - Photo Light Meter
LUX Meter - Photo Light Meter
LUX Meter - Photo Light Meter
Measure light for photoshoot
Free

This utility app precisely measures light intensity in LUX and color temperature in Kelvin. It provides real-time exposure readings for photoshoots and filming, helping users adjust lighting for optimal results.

Real-time color temperature measurementLight measurement in LUXReal-time heat measurement (Kelvin)
🔧 Utilities
(1)
free with in-app purchases
19
Magic Measure - AR Ruler
Magic Measure - AR Ruler
Magic Measure - AR Ruler
by Kemal Duran
Free

This app transforms your phone into a virtual tape measure using AR technology. Accurately measure distances, heights, and widths of objects and surfaces in both 2D and 3D space. Ideal for construction, home renovation, and various projects requiring precise measurements.

Virtual tape measure rulerMeasure distances, heights, and widths2D and 3D object measurement
🔧 Utilities
(0)
free
20
Wi-Fi Smart Meter Setup Tool
Wi-Fi Smart Meter Setup Tool
Wi-Fi Smart Meter Setup Tool
by Dec Metrics Ltd
Free
💼 Business
(0)

FAQ about Par Meter

What are the best par meter apps for iPhone?
Photone - Grow Light Meter tops our par meter apps ranking as of July 2026, with a 4.6-star average from 4.9K App Store ratings, and it's free to download.
Yes — 20 of the top par meter apps we rank are free to download, including Photone - Grow Light Meter and PPFD METER - Grow Light Meter.
Photone - Grow Light Meter has no ads and offers in-app purchases, according to its App Store listing as of July 2026.
We track 248+ par meter apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
Photone is a mobile application that functions as a highly accurate light meter for plants. It uses your device's camera to measure various light metrics such as PAR, PPFD, DLI, lux, foot-candles, and color temperature (kelvin). This data helps users understand and optimize the lighting conditions for their plants.
Key features include industry-leading accuracy comparable to professional PAR sensors, pre-calibration for your specific device, and excellent low light sensitivity. It also offers in-app guides, light source selection for different grow lights, and a hands-free 'read aloud' function. Some advanced features like Extended PAR and underwater measurement modes require an in-app purchase.

Related searches

par meter freepar meter : ppfd monitor