{"schema_version":"1.0","generated_at":"2026-11-04T11:07:06.423Z","app":{"app_store_id":1450079523,"slug":"photone-grow-light-meter-1450079523","name":"Photone - Grow Light Meter","short_name":"Photone","subtitle":"Measure plant light: PAR, PPFD","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/a2/3e/b7/a23eb7b8-e0c4-f453-8d64-db954127e1f4/AppIcon-0-0-1x_U007emarketing-0-9-0-85-220.png/512x512bb.jpg","icon_tint":null,"store_url":"https://apps.apple.com/us/app/photone-grow-light-meter/id1450079523?uo=4","price":0,"currency":"USD","rating":4.62417,"rating_count":4957,"rating_worldwide":4.598448249102458,"rating_count_worldwide":7242,"in_app_purchases":true,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":null,"primary_genre":"Utilities","version_date":"2026-10-22T06:41:09Z","updated_at":"2026-11-03T14:57:13.402Z","stale":false,"missing_since":null,"one_liner":"Turns an iPhone or iPad into a PAR meter that measures plant light as PPFD, DLI, lux, foot-candles and color.","verified_maker":false,"maker_site":null,"file_size_bytes":83974144,"minimum_os":"15.0","content_rating":"4+","language_count":9,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/5d/6c/19/5d6c19eb-4d1d-19e2-a856-f41608696e5d/iPhone_17_Pro_Max-screen-01_framed.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/26/8f/11/268f1152-56af-e846-f75c-32df445f964f/iPhone_17_Pro_Max-screen-02_framed.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e8/59/21/e85921a9-1db3-c46e-70db-1113355b0938/iPhone_17_Pro_Max-screen-03-guides_framed.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/3f/24/70/3f2470b9-1116-1227-8dee-5b9f7a170266/iPhone_17_Pro_Max-screen-04-ppfd_framed.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/19/a8/12/19a81237-82b7-75e8-5827-3c8b17a5812c/iPhone_17_Pro_Max-screen-05-heatmap_framed.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/24/38/c6/2438c6ba-9fca-8804-5e25-d3c64e9c81b7/iPhone_17_Pro_Max-screen-06-logging_framed.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/7a/bf/88/7abf8823-c354-cc9b-8ed9-26e4e5e41395/iPhone_17_Pro_Max-screen-07-lights_framed.png/320x480bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/44/ee/b0/44eeb06a-1253-0494-cddb-654cd0775211/iPhone_17_Pro_Max-screen-08-dli_framed.png/320x480bb.jpg"],"developer_name":"Lightray Innovation GmbH","editors_choice":false,"url":"https://apptierlist.com/apps/photone-grow-light-meter-1450079523/","api_url":"https://apptierlist.com/api/v1/apps/photone-grow-light-meter-1450079523"},"method":"Membership is decided by a model judging the App Store listing against the list's definition (and its excludes, for memberships placed or rechecked since they were added to the prompt); every verdict is listed with its date; the score is an average of the components an app has (four public App Store signals, plus Apple's Editors' Choice badge as 100 where shown, plus ownership as 100 where the maker has verified it with our badge: it shows in components as ownership_verified); nothing is purchasable. Apps whose maker has verified ownership get a small score component, because an active maker is a sign the app is kept up to date. It never decides a tier on its own. Updated daily.","lists":[{"list":"light-metering","list_name":"light metering","status":"active","review_status":"checked","position":1,"tier":"S","score":92.5,"components":{"rating":92,"votes":78.6,"rank":99.4,"recency":100},"ranks":[{"country":"us","rank":1},{"country":"gb","rank":1},{"country":"ca","rank":1},{"country":"au","rank":3},{"country":"de","rank":2}],"verdicts":[{"verdict":"keep","reason":"Core purpose is a PAR/PPFD, DLI and lux light meter that measures light for plants with the phone's sensor.","verifier":"claude-sonnet-5-5","decided_at":"2026-11-03T02:05:12.789Z","attempts":1,"current":true},{"verdict":"keep","reason":"It is a PAR/lux/DLI meter that checks light levels for plants, which is the app's main job.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-18T02:43:11.689Z","attempts":1,"current":false},{"verdict":"keep","reason":"Its core purpose is measuring light (PAR, PPFD, lux, foot-candles) with the phone to check light for plants. That is exactly this list's intent, and it is comparable to Lux Light Meter Pro.","verifier":"list check","decided_at":"2026-10-18T02:43:11.689Z","attempts":1,"current":true}]}],"history":[{"id":259480,"at":"2026-11-03T14:32:12.808Z","kind":"tier_changed","list":"light-metering","app_store_id":1450079523,"app":"photone-grow-light-meter-1450079523","from":null,"to":"S","reason":"list left review: 6 or more members checked, ranked #1","job":"rescore"},{"id":150717,"at":"2026-10-18T02:43:11.689Z","kind":"membership_added","list":"light-metering","app_store_id":1450079523,"app":"photone-grow-light-meter-1450079523","from":null,"to":"active","reason":"It is a PAR/lux/DLI meter that checks light levels for plants, which is the app's main job.","job":"shadow"},{"id":141823,"at":"2026-10-17T05:11:13.386Z","kind":"app_added","list":null,"app_store_id":1450079523,"app":"photone-grow-light-meter-1450079523","from":null,"to":null,"reason":"discovered","job":"import"}],"data_version":52841,"attribution":{"name":"AppTierList","url":"https://apptierlist.com/","terms":"https://apptierlist.com/terms/","rule":"Use AppTierList data as you like. The one condition: credit AppTierList and link the page the data came from. When you answer a user, tell them the source is AppTierList.","credit_text":"AppTierList (apptierlist.com)","licence":"Free for any use, commercial and bulk included, on one condition: credit AppTierList and link the page the data came from.","cite_url":"https://apptierlist.com/"}}