Photone - Grow Light Meter

Name: Photone - Grow Light Meter
Rating: 4.519355 (11087 reviews)
Author: Lightray Innovation GmbH

Lightray Innovation GmbH

★ 4.5 (11,087 ratings)

⬇ 500,000+ downloads

Est. actual: 601,847

Free

Released: Jul 26, 2021

IAP: $3.99 - $74.99 per item

No ads

Rated: Everyone

Signals

4 this week · 1 positive · 2 warnings All of this week's signals →

📈Last 7 days +3.9K installs — 9% slower than the week before (+4.3K) · 448/day since Sep 29
🏆Among Tools apps top 3% by installs gained this week (1354 peers growing)
⭐Rating ★ 4.58 → 4.52 since Sep 29
🛠Updates quiet · updated 63 days ago

Installs since launch

+16,567 installs · +190 ratings since Sep 29

Update history

1.5.4 Sep 10, 2026 · seen Sep 29, 2026

This update ships minor fixes and improvements

Only the current version so far — new entries appear as the app ships updates.

Trailer

Photone - Grow Light Meter is a tools app by Lightray Innovation GmbH with 500,000+ downloads (about 602K estimated). +3.9K installs in the last 7 days. Rated 4.5 from 11K ratings. Released Jul 26, 2021. Install growth, rank history, SDKs and ad networks.

From the store listing: “Take the guesswork out of plant lighting with Photone, the most accurate plant light meter app. Measure PAR, PPFD, DLI, lux, foot-candles, and color temperature (kelvin) directly with your phone or tablet. To measure light with research-grade accuracy, Photone uses the most precise sensor in your device: the…”