{"schema_version":"1.0","generated_at":"2026-10-22T03:54:06.552Z","app":{"app_store_id":423214938,"slug":"guitar-tuner-chromatic-423214938","name":"Guitar Tuner - Chromatic","subtitle":"Tuner for Guitar Bass Ukulele","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/d6/e7/8a/d6e78ab3-2d5f-48ea-1534-8fa3b6aca88a/AppIcon-0-0-1x_U007epad-0-1-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/guitar-tuner-chromatic/id423214938?uo=4","price":0,"currency":"USD","rating":4.61476,"rating_count":8213,"in_app_purchases":true,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":"2026-10-17T23:21:11.601Z","primary_genre":"Music","version_date":"2026-08-23T17:21:02Z","updated_at":"2026-10-21T01:48:13.783Z","stale":false,"missing_since":null,"one_liner":"Chromatic tuner that uses the device microphone to read pitch for guitar, bass, ukulele and other instruments.","verified_maker":false,"maker_site":null,"file_size_bytes":6778880,"minimum_os":"17.6","content_rating":"4+","language_count":1,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/a4/cb/10/a4cb1002-8032-4553-5d86-30f9a594caf8/Simulator_Screenshot_-_iPhone_17_Pro_Max_-_2026-06-21_at_21.45.56.png/320x480bb.jpg"],"developer_name":"Last Harmonic LLC","editors_choice":false,"url":"https://apptierlist.com/apps/guitar-tuner-chromatic-423214938/","api_url":"https://apptierlist.com/api/v1/apps/guitar-tuner-chromatic-423214938"},"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":"guitar-tuning","list_name":"guitar tuning","status":"active","review_status":"checked","position":4,"tier":"S","score":92.7,"components":{"rating":91.9,"votes":81.5,"rank":97.2,"recency":100},"ranks":[{"country":"us","rank":4},{"country":"gb","rank":4},{"country":"ca","rank":3},{"country":"au","rank":4},{"country":"de","rank":4}],"verdicts":[{"verdict":"keep","reason":"Named Guitar Tuner and uses the microphone for accurate pitch reading, so guitar tuning is a core job.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-16T07:30:49.487Z","attempts":1,"current":true},{"verdict":"keep","reason":"The app is branded and built as a guitar tuner. It reads string pitch through the mic, so guitarists would compare it with the other guitar tuners, even though it is chromatic.","verifier":"list check","decided_at":"2026-10-16T07:30:49.487Z","attempts":1,"current":true}]},{"list":"instrument-tuning","list_name":"instrument tuning","status":"active","review_status":"checked","position":9,"tier":"A","score":90.7,"components":{"rating":91.9,"votes":81.5,"rank":89.4,"recency":100},"ranks":[{"country":"us","rank":19},{"country":"gb","rank":10},{"country":"ca","rank":9},{"country":"au","rank":7},{"country":"de","rank":13}],"verdicts":[{"verdict":"keep","reason":"Chromatic tuner that works with any instrument (guitar, bass, ukulele) and any note.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-16T07:30:49.487Z","attempts":1,"current":true},{"verdict":"keep","reason":"It is a chromatic tuner that detects pitch from the mic for any instrument (guitar, bass, ukulele and others), which is exactly what this list is for.","verifier":"list check","decided_at":"2026-10-16T07:30:49.487Z","attempts":1,"current":true}]}],"history":[{"id":155171,"at":"2026-10-18T05:20:12.091Z","kind":"tier_changed","list":"instrument-tuning","app_store_id":423214938,"app":"guitar-tuner-chromatic-423214938","from":"S","to":"A","reason":"rank shift: #9, score unchanged at 90.7, tier full (a quarter of the list)","job":"rescore"},{"id":146892,"at":"2026-10-17T12:14:13.437Z","kind":"tier_changed","list":"guitar-tuning","app_store_id":423214938,"app":"guitar-tuner-chromatic-423214938","from":null,"to":"S","reason":"score 68.3 to 93.3","job":"rescore"},{"id":133296,"at":"2026-10-16T19:37:41.230Z","kind":"tier_changed","list":"instrument-tuning","app_store_id":423214938,"app":"guitar-tuner-chromatic-423214938","from":"C","to":"S","reason":"score 67.9 to 90.7","job":"rescore"},{"id":124109,"at":"2026-10-16T07:40:49.470Z","kind":"tier_changed","list":"instrument-tuning","app_store_id":423214938,"app":"guitar-tuner-chromatic-423214938","from":null,"to":"C","reason":"score 67.9","job":"rescore"},{"id":123616,"at":"2026-10-16T07:30:49.487Z","kind":"membership_added","list":"instrument-tuning","app_store_id":423214938,"app":"guitar-tuner-chromatic-423214938","from":null,"to":"active","reason":"Chromatic tuner that works with any instrument (guitar, bass, ukulele) and any note.","job":"shadow"},{"id":123615,"at":"2026-10-16T07:30:49.487Z","kind":"membership_added","list":"guitar-tuning","app_store_id":423214938,"app":"guitar-tuner-chromatic-423214938","from":null,"to":"active","reason":"Named Guitar Tuner and uses the microphone for accurate pitch reading, so guitar tuning is a core job.","job":"shadow"},{"id":103968,"at":"2026-10-15T10:45:36.316Z","kind":"app_added","list":null,"app_store_id":423214938,"app":"guitar-tuner-chromatic-423214938","from":null,"to":null,"reason":"discovered","job":"import"}],"data_version":40547,"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/"}}