{"schema_version":"1.0","generated_at":"2026-10-21T04:34:49.134Z","app":{"app_store_id":409786458,"slug":"n-track-tuner-409786458","name":"n-Track Tuner","subtitle":null,"icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/9f/2d/31/9f2d3115-f93b-1152-b70d-d717991cf135/AppIcon_Tuner-0-0-1x_U007epad-0-1-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/n-track-tuner/id409786458?uo=4","price":0,"currency":"USD","rating":4.72401,"rating_count":3203,"in_app_purchases":null,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":null,"primary_genre":"Music","version_date":"2026-05-31T20:24:46Z","updated_at":"2026-10-19T20:20:11.589Z","stale":false,"missing_since":null,"one_liner":"Free tuner app for guitars, bass, violins, pianos and wind instruments that uses the iPhone or iPad microphone.","verified_maker":false,"maker_site":null,"file_size_bytes":81160192,"minimum_os":"11.0","content_rating":"4+","language_count":2,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/0c/24/ef/0c24efd2-2ae6-d037-1ce0-bb0aa36e90bf/1a0a0764-8de6-4da5-a07b-504b40326c1f_Tuner_55_001.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e9/1d/8e/e91d8e9a-1765-0dca-ba3c-ab9107685449/37380cf3-b42b-46a3-a3a2-1358dad5e0bc_Tuner_55_002.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/fa/94/01/fa9401b6-58c7-e7df-3238-9600fb13a609/65841232-c42d-4d6e-85fb-d711258bb12e_Tuner_55_003.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/f1/d7/bf/f1d7bfed-2cfd-5689-8a21-0b3bc34a9d70/76edcbb5-e868-46a3-884d-39b3838b13c6_Tuner_55_004.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/8c/b2/ee/8cb2eec5-9eea-c84f-9564-98b5a419c866/9634642c-9909-4f67-b47a-bb2a13b5d2a4_Tuner_55_005.png/392x696bb.png"],"developer_name":"n-Track S.r.l.","editors_choice":null,"url":"https://apptierlist.com/apps/n-track-tuner-409786458/","api_url":"https://apptierlist.com/api/v1/apps/n-track-tuner-409786458"},"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":"instrument-tuning","list_name":"instrument tuning","status":"active","review_status":"checked","position":14,"tier":"B","score":85.7,"components":{"rating":93.6,"votes":77.6,"rank":85.2,"recency":86.6},"ranks":[{"country":"us","rank":18},{"country":"gb","rank":20},{"country":"ca","rank":17},{"country":"au","rank":17},{"country":"de","rank":7}],"verdicts":[{"verdict":"keep","reason":"The app tunes guitar, bass, violin, viola, cello, piano and wind instruments with microphone pitch detection.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-19T02:15:11.916Z","attempts":1,"current":true},{"verdict":"keep","reason":"Its main purpose is a chromatic tuner that detects pitch through the microphone. It covers guitar, bass, violin, cello, ukulele, piano and wind instruments, so it is not limited to guitar.","verifier":"list check","decided_at":"2026-10-19T02:15:11.916Z","attempts":1,"current":true}]}],"history":[{"id":165971,"at":"2026-10-19T02:16:11.593Z","kind":"tier_changed","list":"instrument-tuning","app_store_id":409786458,"app":"n-track-tuner-409786458","from":null,"to":"B","reason":"score 86","job":"rescore"},{"id":165925,"at":"2026-10-19T02:15:11.916Z","kind":"membership_added","list":"instrument-tuning","app_store_id":409786458,"app":"n-track-tuner-409786458","from":null,"to":"active","reason":"The app tunes guitar, bass, violin, viola, cello, piano and wind instruments with microphone pitch detection.","job":"shadow"},{"id":159333,"at":"2026-10-18T07:27:11.699Z","kind":"app_added","list":null,"app_store_id":409786458,"app":"n-track-tuner-409786458","from":null,"to":null,"reason":"discovered","job":"import"}],"data_version":39556,"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/"}}