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Best Par Meter Free Apps

250+ iOS apps curated and reviewed

4.1 avg rating
20 free apps
Updated November 2026

Whether you're new to par meter free or looking for an upgrade, our curated collection of 250+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Par Meter Free Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Photone - Grow Light MeterPhotone - Grow Light MeterFree4.6โ˜… (5K)NoYesNov 2026
2PPFD METER - Grow Light MeterPPFD METER - Grow Light MeterFree4.6โ˜… (132)YesYesNov 2026
3Par Meter : PPFD MonitorPar Meter : PPFD MonitorFree2.5โ˜… (2)NoYesOct 2026
4VIVOSUNVIVOSUNFree4.7โ˜… (8.7K)NoNoNov 2026
5LUX Meter - Light MeterLUX Meter - Light MeterFree4.4โ˜… (13)NoNoNov 2026
6Light Meter LM-3000Light Meter LM-3000Free4.5โ˜… (2.6K)NoYesNov 2026
7Lux Light Meter for MobileLux Light Meter for MobileFree4.5โ˜… (237)YesYesNov 2026
8Light Meter: Lux-525 ProLight Meter: Lux-525 ProFree4.5โ˜… (116)NoYesOct 2026

Top Picks for Par Meter Free

Photone - Grow Light Meter#1

Photone - Grow Light Meter by Lightray Innovation GmbH

Measure plant light: PAR, PPFD
Editor's Choice
๐Ÿ”ง Utilities
4.6๐Ÿ˜(5K 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

  • ๐Ÿš€ Accurate readings
  • ๐Ÿ’ก Helpful for growing plants
  • ๐Ÿ‘ Easy to use
  • ๐Ÿš€ Saves money compared to expensive meters
  • ๐Ÿ‘ Useful for adjusting lighting

Room to Improve

  • ๐Ÿ› Inconsistent readings
  • ๐Ÿ’ฐ Expensive in-app purchases
  • ๐Ÿ”’ Requires additional equipment (diffuser) to work properly
  • ๐Ÿ› Readings not accurate without calibration
  • ๐Ÿ”’ Limited functionality in free version
PPFD METER - Grow Light Meter#2

PPFD METER - Grow Light Meter by Candas Pamukcu

LUX, PAR, PPFD, DLI & PAR Maps
Strong Contender
๐Ÿ”ง Utilities
4.6(132 ratings)
FreeAdsIn-App Purchases
PPFD METER - Grow Light Meter screenshot 1
PPFD METER - Grow Light Meter screenshot 2
PPFD METER - Grow Light Meter screenshot 3
PPFD METER - Grow Light Meter screenshot 4
PPFD METER - Grow Light Meter screenshot 5
PPFD METER - Grow Light Meter screenshot 6

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.

Par Meter : PPFD Monitor#3

Par Meter : PPFD Monitor by CODIGITAL SOLUTIONS

Grow Scale For Your Plants
Worth Considering
๐Ÿ”ง Utilities
2.5(2 ratings)
FreeIn-App Purchases
Par Meter : PPFD Monitor screenshot 1
Par Meter : PPFD Monitor screenshot 2
Par Meter : PPFD Monitor screenshot 3
Par Meter : PPFD Monitor screenshot 4
Par Meter : PPFD Monitor screenshot 5

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.

More Par Meter Free apps to explore

FAQ about Par Meter Free

What are the best par meter free apps for iPhone?
Photone - Grow Light Meter tops our par meter free apps ranking as of November 2026, with a 4.6-star average from 5K App Store ratings, and it's free to download.
Photone - Grow Light Meter has no ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 250+ par meter free apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.