# LumenLeaf: PPFD Grow Light

> PAR DLI Meter for Houseplants

Canonical page: [https://chrome-stats.com/d/id6771374329](https://chrome-stats.com/d/id6771374329)

## Overview

- **ID:** `id6771374329`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** lapnito.cz s.r.o.
- **Category:** Utilities
- **Version:** 1.0
- **Last updated:** 2026-05-27
- **First published:** 2026-05-27
- **Size:** 30 MB
- **Data as of:** 2026-09-19
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/lumenleaf-ppfd-grow-light/id6771374329)
- **Privacy policy:** [https://lapnito.cz/lumenleaf/privacy.html](https://lapnito.cz/lumenleaf/privacy.html)

## Description

Free PPFD, PAR & DLI meter for monstera, microgreens, herbs & hydroponics. No ads, no account, no subscription. Honest about camera vs. ALS accuracy.

LumenLeaf turns your phone into a real PAR / PPFD grow light meter for
monstera, fiddle leaf fig, pothos, snake plant, succulents, orchids,
microgreens, herbs, hydroponics, grow tents and legal home cultivation
— all free, offline, with no account, no ads, and no subscription.

Measure photosynthetically active radiation (PAR / PPFD), Daily Light
Integral (DLI), illuminance (lux / foot-candle) and color temperature
(Kelvin) directly with your phone's camera and ambient light sensor.

WHAT YOU CAN MEASURE
- PPFD in µmol/m²/s — real-time photon flux density
- DLI in mol/m²/d — daily light integral with photoperiod input
- Lux and foot-candle illuminance
- Color temperature in Kelvin (CCT)
- Per-light-source readings: Sunlight, White LED, HPS, CMH, Fluorescent, Mixed

WHY LUMENLEAF
- 100% free — every feature, every plant preset, no paywalls
- No account, no email, no sign-up
- Works fully offline
- Available in 20 languages from launch
- Honest about accuracy — we tell you when you're on camera mode vs ALS estimate
- No physical hardware to buy — interactive printer-paper diffuser walkthrough
- Zero data collection, no analytics SDK, no advertising IDs

PERFECT FOR
- Houseplant parents — monstera, fiddle leaf, pothos, snake plant, calathea, ZZ
- Microgreen growers
- Indoor herb gardens — basil, mint, rosemary, oregano
- Succulents, cacti and orchids
- Hydroponic and aeroponic setups
- Grow tent hobbyists
- Aquarium plant keepers (v1.1)
- Legal home cultivation

WHAT WE MEASURE THAT OTHER APPS HIDE
LumenLeaf is the only free grow light meter that openly distinguishes
camera-grade readings from ambient light sensor (ALS) estimates. If
your phone does not have a calibration profile, we tell you — no
silent fallback that quietly halves your accuracy.

HOW IT WORKS
LumenLeaf uses your phone's rear camera in RAW mode (when supported)
for research-grade illuminance, then converts to PPFD using
light-source-specific coefficients. On phones without RAW support,
we fall back to the ambient light sensor and clearly mark which mode
you are on. A simple printer-paper diffuser is required — build one
in under 2 minutes with our visual guide.

## Rankings

- #2,099,153 — Overall

## Similar extensions and apps

- [Grow Light Meter: PPFD](https://chrome-stats.com/d/id6784830058)
- [Plant Light Meter: Lux & PPFD](https://chrome-stats.com/d/id1628111038) — 2.20 / 5
- [GrowPAR](https://chrome-stats.com/d/id6762544264)
- [PPFD METER - Grow Light Meter](https://chrome-stats.com/d/id6479329051) — 4.60 / 5
- [Par Meter : PPFD Monitor](https://chrome-stats.com/d/id6757111998) — 2.50 / 5
- [Photone - Grow Light Meter](https://chrome-stats.com/d/id1450079523) — 4.60 / 5
- [Light Meter: Plant Lux & PPFD](https://chrome-stats.com/d/id6772273072)
- [LUX METER- Lux,Fc,PPFD](https://chrome-stats.com/d/id6780143255)
- [Peloria: Plant Light Meter](https://chrome-stats.com/d/id6779911195)
- [LightMeter Pro: Lux Meter](https://chrome-stats.com/d/id6759503979)
- [Light Meter For Plants](https://chrome-stats.com/d/id6755839439) — 3.30 / 5
- [Light Meter Pro - Lux Measure](https://chrome-stats.com/d/id6777116706)

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6771374329)