{"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","schema_version":"1.0","generated_at":"2026-10-22T03:11:50.730Z","data_as_of":"2026-10-22T01:56:12.724Z","description":"A simple, free tuner that works.\n\nWhat the users are saying:\n\"This is the only chromatic tuner that I tried on here that actually works.\" - dharris (USA)\n\n\"Great app, love the noise cancellation thingy and it's probably the most accurate tuner on the app store\" - Joshua Joe (New Zealand)\n\n\"Awesome! - One of the best tuners on the app store! I'm impressed\" - Ybxbmhnjgl (Canada)\n\n\nGuitar Tuner is a chromatic tuner which uses the iPhone/iPod microphone to give you an accurate pitch reading.\n\nFeatures:\n- works with any instrument! Guitar, Bass, Ukulele...you name it!\n- chromatic: works with any note!\n- accurate to 0.33 Hz\n- slider control to filter background noise\n- fine tuning display with +/- 50 cent range and 2 cent increments\n- wide range display shows +/- 2.5 semitones with 10 cent increments\n- extremely fast 0.1 second refresh rate","facts":{"developer_id":1434701537,"developer_url":"http://guitar-tuner-app.com","first_released":"2011-05-07T17:34:10Z","support_url":"http://guitar-tuner-app.com/","privacy_url":"http://www.guitar-tuner-app.com/privacy.html","website_url":"http://guitar-tuner-app.com/","app_version":"4.0.1","release_notes":"Fixed a bug when launching the app with siri","rating_current_version":4.61476,"rating_count_current_version":8213,"star_counts":[327,132,329,810,6617],"genres":["Music","Education"],"languages":["EN"],"content_advisories":null,"device_families":["iphone","ipad"],"chart":null},"freshness":{"apple_read_at":"2026-10-21T01:48:13.783Z","catalog_read_at":"2026-10-17T23:21:11.601Z","reviews_checked_at":"2026-10-17T23:21:11.601Z","summary_written_at":"2026-10-18T00:01:11.536Z","placed_at":"2026-10-16T07:30:49.487Z","scored_at":"2026-10-22T01:56:12.724Z"},"editorial":{"one_liner":"Chromatic tuner that uses the device microphone to read pitch for guitar, bass, ukulele and other instruments.","what_is":"Guitar Tuner - Chromatic is a chromatic tuner that uses the iPhone or iPod microphone to give a pitch reading. It works with any instrument and any note, and includes a slider to filter background noise. It states accuracy to 0.33 Hz, a fine tuning display of plus or minus 50 cents, and a wide range display of plus or minus 2.5 semitones.","good_for":["Tuning a guitar, bass or ukulele with a phone microphone","Tuning in a noisy room using the background noise filter","Checking any chromatic note on an instrument"],"pricing":"Guitar Tuner - Chromatic is free to download, with in-app purchases on the App Store.","faq":[{"q":"Does it work with instruments other than guitar?","a":"It works with any instrument, naming guitar, bass and ukulele, and any chromatic note."},{"q":"How does it detect pitch?","a":"It uses the iPhone or iPod microphone. The listing states accuracy to 0.33 Hz and a refresh rate of 0.1 seconds."},{"q":"Does it cost anything to use?","a":"It is free to download. The App Store lists in-app purchases, but the listing does not describe them."}],"model":"claude-haiku-5-5","created_at":"2026-10-18T00:01:11.536Z"},"memberships":[{"list":"guitar-tuning","list_name":"guitar tuning","list_status":"active","list_url":"https://apptierlist.com/best/guitar-tuning/","position":4,"tier":"S","score":92.7,"components":{"rating":91.9,"votes":81.5,"rank":97.2,"recency":100},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-16T07:30:49.487Z"},{"list":"instrument-tuning","list_name":"instrument tuning","list_status":"active","list_url":"https://apptierlist.com/best/instrument-tuning/","position":9,"tier":"A","score":90.7,"components":{"rating":91.9,"votes":81.5,"rank":89.4,"recency":100},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-16T07:30:49.487Z"}],"main_list":"guitar-tuning","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"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"}],"explain":{"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}]}]},"data_version":40521,"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/apps/guitar-tuner-chromatic-423214938/"}}