{"schema_version":"1.0","generated_at":"2026-10-23T00:41:06.191Z","app":{"app_store_id":1281344281,"slug":"decibel-meter-master-1281344281","name":"Decibel Meter Master","subtitle":"Tool for measuring sound level","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/0c/93/a5/0c93a531-3f46-f2c7-abf4-a2eb979df097/AppIcon-1x_U007emarketing-85-220-0-9.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/decibel-meter-master/id1281344281?uo=4","price":0,"currency":"USD","rating":4.61137,"rating_count":3219,"in_app_purchases":false,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":null,"primary_genre":"Utilities","version_date":"2018-03-22T17:09:06Z","updated_at":"2026-10-22T16:27:13.183Z","stale":false,"missing_since":null,"one_liner":"Uses the iPhone microphone to measure sound level in decibels.","verified_maker":false,"maker_site":null,"file_size_bytes":26011648,"minimum_os":"9.0","content_rating":"4+","language_count":3,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/3f/5f/96/3f5f9676-c531-d503-837a-47a6fa135782/pr_source.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/6e/b2/1f/6eb21fe6-737b-d92a-27e5-65059b72d02a/pr_source.png/392x696bb.png"],"developer_name":"燕辉 冯","editors_choice":false,"url":"https://apptierlist.com/apps/decibel-meter-master-1281344281/","api_url":"https://apptierlist.com/api/v1/apps/decibel-meter-master-1281344281"},"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 a plain average of the public components an app has (four, plus Apple's Editors' Choice badge as 100 where shown); nothing is purchasable.","lists":[{"list":"sound-measurement","list_name":"sound measurement","status":"active","review_status":"checked","position":11,"tier":"C","score":61.5,"components":{"rating":91.3,"votes":77.3,"rank":77.6,"recency":0},"ranks":[{"country":"us","rank":14},{"country":"gb","rank":16},{"country":"ca","rank":10},{"country":"au","rank":16}],"verdicts":[{"verdict":"keep","reason":"The app turns the iPhone into a sound level meter that measures noise level in decibels.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-19T02:15:11.916Z","attempts":1,"current":true},{"verdict":"keep","reason":"Its main purpose is to work as a sound level meter that measures live noise levels in decibels, which is exactly what this list is for.","verifier":"list check","decided_at":"2026-10-19T02:15:11.916Z","attempts":1,"current":true}]}],"history":[{"id":193598,"at":"2026-10-22T10:35:12.511Z","kind":"tier_changed","list":"sound-measurement","app_store_id":1281344281,"app":"decibel-meter-master-1281344281","from":null,"to":"C","reason":"score 42.1 to 62.3","job":"rescore"},{"id":165882,"at":"2026-10-19T02:15:11.916Z","kind":"membership_added","list":"sound-measurement","app_store_id":1281344281,"app":"decibel-meter-master-1281344281","from":null,"to":"active","reason":"The app turns the iPhone into a sound level meter that measures noise level in decibels.","job":"shadow"},{"id":159318,"at":"2026-10-18T07:27:11.699Z","kind":"app_added","list":null,"app_store_id":1281344281,"app":"decibel-meter-master-1281344281","from":null,"to":null,"reason":"discovered","job":"import"}],"data_version":41344,"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/"}}