LumenLeaf: PPFD Grow Light
LumenLeaf: PPFD Grow Light is made and published by lapnito.cz s.r.o. AppBrain is an independent app data site and isn't affiliated with lapnito.cz s.r.o. The app name, icon, screenshots and description belong to lapnito.cz s.r.o. and are shown as published on the App Store.
AppBrain's verdict
- Rating on App Store
- 1.00
- 2 ratings
- Last updated
- May 27, 2026
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Releases
Updates seen on the App Store- Version
- 1.0
- Launched
- May 2026
No changelog data
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 30.3 MB
- Content rating
- Everyone
Technologies used by LumenLeaf: PPFD Grow Light
About the app and developer
About LumenLeaf: PPFD Grow Light
LumenLeaf: PPFD Grow Light is an utilities app developed by lapnito.cz s.r.o.
User Ratings
LumenLeaf: PPFD Grow Light is rated 1.00 out of 5 stars. The rating is based on 2 ratings.
App Information
LumenLeaf: PPFD Grow Light is freely available from the App Store. The app size is 30.31 MB. The latest version available is 1.0. The last update was on May 27, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since May 2026.
Developer information for lapnito.cz s.r.o.
Address:
Store listing
By lapnito.cz s.r.o., from the App Store
Description by lapnito.cz s.r.o. Written by the developer, not by AppBrain. Click to read.
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.