---
title: "LumenLeaf: PPFD Grow Light - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "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 c"
---

# LumenLeaf: PPFD Grow Light — United States
> PAR DLI Meter for Houseplants

![LumenLeaf App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/50/a2/fd/50a2fd20-0af3-6716-4cd2-8db6a9f65cdb/AppIcon-0-0-1x_U007ephone-0-1-sRGB-85-220.png/434x0w.png)

**Developer:** [lapnito.cz s.r.o](https://apptail.io/developer/lapnitocz-sro-FQQe) (Czechia)
**Category:** Utilities
**Rating:** 1.0/5 (2 ratings)
**Price:** Free
**Bundle ID:** cz.lapnito.lumenleaf
**Store:** Apple App Store
**Country:** United States
**Version:** 1.0 (released 2026-05-27)
**Original Release:** 2026-05-27
**Languages:** German, Arabic, Danish, English, French, Greek (modern), Hindi, Indonesian, Italian, Japanese, Korean, Dutch, Polish, Portuguese, Russian, Swedish, Spanish, Thai, Czech, Turkish, Ukrainian, Chinese, Vietnamese

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6771374329)
**AppTail Page:** [https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/united-states](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/united-states)

## LumenLeaf Description
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.

## LumenLeaf Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/12/9d/53/129d53ce-893c-980b-3681-85223eb74df4/01_split_left.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/bb/8b/0a/bb8b0a7c-0eb5-d11d-685c-b8b79fe1df13/02_split_right.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/c8/1c/4f/c81c4f6f-bd36-73dc-34b1-f7951026da7b/03_dli.png/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/62/1b/08/621b08f0-a78e-2d84-f651-66fc75e3d0d1/05_targets.png/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/93/5b/de/935bde2b-4887-9c41-cc8b-c4657ff0b905/04_plants.png/1284x2778.png)

## LumenLeaf Rating Breakdown in United States
- 5 stars: 0 (0%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 2 (100%)






## LumenLeaf Available In
- [United States](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/united-states)
- [Germany](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/germany)
- [Japan](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/japan)
- [Switzerland](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/switzerland)
- [Chile](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/chile)
- [Czechia](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/czechia)
- [Dominican Republic](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/dominican-republic)
- [Finland](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/finland)
- [Indonesia](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/indonesia)
- [Israel](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/israel)
- [Austria](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/austria)
- [Italy](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/italy)
- [South Korea](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/south-korea)
- [Kazakhstan](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/kazakhstan)
- [Lithuania](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/lithuania)
- [Malta](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/malta)
- [Mexico](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/mexico)
- [Malaysia](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/malaysia)
- [Norway](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/norway)
- [Russia](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/russia)
- [India](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/india)
- [Brazil](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/brazil)
- [Canada](https://apptail.io/app/lumenleaf-ppfd-grow-light-BFFA/canada)

---

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