{"app_store_id":1448661287,"slug":"guitar-tuner-guitartunio-1448661287","name":"Guitar Tuner - GuitarTunio","subtitle":null,"icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/56/7c/03/567c0384-023b-804f-8bcc-cd60fd480090/AppIcon-0-0-1x_U007emarketing-0-0-0-7-0-0-sRGB-0-0-0-GLES2_U002c0-512MB-85-220-0-0.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/guitar-tuner-guitartunio/id1448661287?uo=4","price":0,"currency":"USD","rating":4.69136,"rating_count":4361,"in_app_purchases":null,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":"2026-10-20T11:35:11.691Z","primary_genre":"Music","version_date":"2023-01-16T15:24:15Z","updated_at":"2026-10-22T09:30:17.201Z","stale":false,"missing_since":null,"one_liner":"Free guitar tuner app for stringed instruments with auto and chromatic modes, plus a metronome and chord library.","verified_maker":false,"maker_site":null,"file_size_bytes":92454912,"minimum_os":"11.0","content_rating":"4+","language_count":10,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/82/59/96/825996e2-1445-c972-cf02-adb787e9e8a0/0f08e3d6-9833-44c1-a0c0-efbc341042fa_Frame_29.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/e8/18/f2/e818f26b-4b73-e8f9-f848-0471c07259fc/b52f641f-9301-4984-9fe4-66013876315a_Frame_30.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/50/eb/91/50eb91f5-c5f3-58d0-3098-eddf86b28063/c32b15cb-51c7-48eb-af13-b6dd6321908a_Frame_31.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/df/1f/aa/df1faa90-b5ce-ffbe-4f34-9b6419c1ed0a/e158a351-f9cf-4440-a42d-145c73edc6d5_Frame_32.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/4f/a2/83/4fa2835c-b1b1-e77f-f905-6edf2753753f/7f812f6f-a74f-4341-b6de-0c687a2f254d_Frame_33.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/8c/4d/43/8c4d43fd-7832-f3c7-7bd7-9fadea261856/ae530847-f521-43f4-a6f1-d767a4ea8b84_Frame_34.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/13/4f/65/134f65d2-8b52-daac-2b10-60a4c03b6817/9de52615-5b26-4590-b0ac-5b3723981153_Frame_35.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource115/v4/3d/e6/b3/3de6b3b8-fdf0-d9d2-f901-90222586197b/0699f597-b77a-41b9-be4f-90279723239e_Frame_36.jpg/392x696bb.jpg"],"developer_name":"APPS NEMO COMPANY LIMITED","editors_choice":null,"url":"https://apptierlist.com/apps/guitar-tuner-guitartunio-1448661287/","api_url":"https://apptierlist.com/api/v1/apps/guitar-tuner-guitartunio-1448661287","schema_version":"1.0","generated_at":"2026-10-23T05:04:41.534Z","data_as_of":"2026-10-23T04:35:15.821Z","description":"Guitar Tunio – Guitar Tuner is a great tuner application for stringed musical instruments. \n\nThe incredible tuner allows musicians to tune their beloved instruments fast and precisely. Guitar Tunio’s interface is designed to be minimal, making the tuning process become easier, more comfortable and effective.  It is easy to use and perfect for both beginners and pros. \n\nGuitar Tunio works well with a variety of stringed instruments and offers over 200+ tunings available, including:\n\nFOR GUITAR\n+ Standard \n+ Lower, DownTuned\n+ Higher, HighTuned\n+ Dropped \n+ Double Dropped \n+ Step \n+ Open \n+ Cross-Note \n+ Modal \n+ Extended \n\nFOR GUITAR 7-STRING and 12-STRING\n+ Standard\n+ Metal\n+ Jazz\n+ Russian Open G\n+ Variant\n\nFOR UKULELE, CAVAQUINHO\n+ Soprano in C\n+ Concert\n+ Tenor\n+ Open D \n+ Drop G \n+ Baritone \n+ Slack Key \n+ Slide \n\nFOR BASS 4-STRING, BASS 5-STRING, BASS 6-STRING, BASS 7-STRING\n+ Standard \n+ Drop D, C, B\n+ Half step \n+ Full step \n+ Open A, E\n+ Tenor Standard\n+ Standard C\n+ Drop A\n+ F# B E A D \n+ E A D G C F \n+ F# B E A D G \n\nFOR VIOLIN FAMILY\n+ Violin\n+ Viola\n+ Cello\n+ Fiddle\n+ Double Bass\n\nFOR FOLK INSTRUMENTS\n+ Mandolin\n+ Mandola\n+ Mandocello\n+ Mandobass\n+ Balalaika\n+ Banjo 4-string\n+ Banjo 5-string\n\nGuitar Tunio supports two main tuner modes to suit all musicians from beginners to advanced. There are: \n\n* Instrument Tuner - Auto Tune Mode\nThe automatic tuner is perfect for beginners as it’s designed for simplicity and ease of use. With this mode, all you have to do is to play any string and the app will automatically read the string you are playing and let you know whether the string is tuned correctly or not so that you can adjust it. \nBesides standard guitar tuning, you can try to tune your instrument with various alternate tunings to inspire your sound. Choose an alternate tuning and start tuning. Remember to keep the microphone of your smartphone close to the instrument when playing. \n\n* Chromatic Tuner - Manual Tune Mode\nThe chromatic tuner allows pro musicians to tune their guitar quickly from standard to drop D without having to touch the app. \nIn addition to providing a powerful tuner feature, the Guitar Tunio offers a built-in metronome and a chord library.\n\n* Digital Metronome : \nA digital metronome is built into the app to help you practice your timing, rhythm, feel and keep a steady tempo. It allows you to set at any tempo and to change the beat manually or by tapping at the desired speed. This feature is a useful tool for daily instrument practice and stage performances. \n\n* Chord Library for Guitar and Ukulele\nGuitar Tunio also features a chord library with over 1000 ukulele and guitar chords so that musicians can learn, practice and improve their level. By learning a new chord daily, you can master and enhance your skills. \nSome other additional features:\n- Quick and sensitive response\n- A wide range of pitch sensor \n- Left-handed mode supported \n- No additional equipment needed\n\nGuitar Tunio is the most accurate and fastest free acoustic and electric guitar tuner app in 2021. \n\nWith the guitar tuner, tuning your stringed instruments has never been so easy, fast and accurate! Try it now and let us know your experience!\nRate 5 stars for us if you love our app and continue to support us in the future. On behalf of our application development team, I would like to express my sincere thanks to the beloved users.\n\nTerms of use and Privacy Policy\nhttps://appsnemo.com/terms-conditions\nhttps://appsnemo.com/policy","facts":{"developer_id":1308119015,"developer_url":"https://appsnemo.com/guitar-tuner","first_released":"2019-01-12T02:35:43Z","support_url":null,"privacy_url":null,"website_url":null,"app_version":"1.13.1","release_notes":"+ Bug fixes\n\nWe are working hard to provide to you the best application.\nDon't forget to rate us 5 stars and writing the review for this app\nThank you so much for supporting us.","rating_current_version":4.69136,"rating_count_current_version":4361,"star_counts":null,"genres":["Music","Utilities"],"languages":["EN","HI","ID","JA","KO","PT","RU","ES","TH","VI"],"content_advisories":null,"device_families":null,"made_for_iphone_duo":null,"chart":null},"freshness":{"apple_read_at":"2026-10-22T09:30:17.201Z","catalog_read_at":null,"reviews_checked_at":"2026-10-20T11:35:11.691Z","summary_written_at":"2026-10-18T05:24:11.792Z","placed_at":"2026-10-18T05:08:11.793Z","scored_at":"2026-10-23T04:35:15.821Z"},"editorial":{"one_liner":"Free guitar tuner app for stringed instruments with auto and chromatic modes, plus a metronome and chord library.","what_is":"Guitar Tunio is a tuner for stringed instruments, including guitar, bass, ukulele, the violin family and folk instruments, and its listing states over 200 tunings. It has an automatic mode that reads the string played and a chromatic mode for manual tuning. The app also includes a digital metronome and a chord library for guitar and ukulele.","good_for":["Tuning guitar, bass, ukulele or violin family instruments","Trying alternate tunings from the listed set","Practicing timing with the built-in metronome"],"pricing":"Guitar Tuner - GuitarTunio is free to download on the App Store.","faq":[{"q":"Does the app cost anything?","a":"It is free to download. No in-app purchases are listed."},{"q":"Which instruments are supported?","a":"The listing names guitar, 7-string and 12-string guitar, bass guitars with 4 to 7 strings, ukulele, cavaquinho, the violin family, and folk instruments such as mandolin and banjo."},{"q":"Does it need extra equipment?","a":"The listing says no additional equipment is needed, but it advises keeping the smartphone microphone close to the instrument when playing."}],"model":"claude-haiku-5-5","created_at":"2026-10-18T05:24:11.792Z"},"memberships":[{"list":"guitar-tuning","list_name":"guitar tuning","list_status":"active","list_url":"https://apptierlist.com/best/guitar-tuning/","position":10,"tier":"C","score":64.7,"components":{"rating":93.2,"votes":77.6,"rank":88,"recency":0},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-18T05:08:11.793Z"},{"list":"instrument-tuning","list_name":"instrument tuning","list_status":"active","list_url":"https://apptierlist.com/best/instrument-tuning/","position":28,"tier":"D","score":59.5,"components":{"rating":93.2,"votes":77.6,"rank":67.4,"recency":0},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-18T05:08:11.793Z"}],"main_list":"guitar-tuning","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"maker":null,"history":[{"id":163112,"at":"2026-10-18T16:46:11.995Z","kind":"tier_changed","list":"instrument-tuning","app_store_id":1448661287,"app":"guitar-tuner-guitartunio-1448661287","from":"F","to":"D","reason":"score 42.7 to 59.5","job":"rescore"},{"id":155173,"at":"2026-10-18T05:20:12.091Z","kind":"tier_changed","list":"instrument-tuning","app_store_id":1448661287,"app":"guitar-tuner-guitartunio-1448661287","from":null,"to":"F","reason":"score 42.7","job":"rescore"},{"id":155083,"at":"2026-10-18T05:20:12.091Z","kind":"tier_changed","list":"guitar-tuning","app_store_id":1448661287,"app":"guitar-tuner-guitartunio-1448661287","from":null,"to":"C","reason":"score 64.2","job":"rescore"},{"id":154780,"at":"2026-10-18T05:08:11.793Z","kind":"membership_added","list":"instrument-tuning","app_store_id":1448661287,"app":"guitar-tuner-guitartunio-1448661287","from":null,"to":"active","reason":"It also tunes ukulele, bass, violin family, mandolin, banjo and balalaika, so it works as a general stringed-instrument tuner.","job":"shadow"},{"id":154779,"at":"2026-10-18T05:08:11.793Z","kind":"membership_added","list":"guitar-tuning","app_store_id":1448661287,"app":"guitar-tuner-guitartunio-1448661287","from":null,"to":"active","reason":"The app is titled Guitar Tuner and offers 200+ guitar tunings (standard, drop, open, 7- and 12-string) with automatic tuning.","job":"shadow"},{"id":146770,"at":"2026-10-17T11:32:13.408Z","kind":"app_added","list":null,"app_store_id":1448661287,"app":"guitar-tuner-guitartunio-1448661287","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":10,"tier":"C","score":64.7,"components":{"rating":93.2,"votes":77.6,"rank":88,"recency":0},"ranks":[{"country":"us","rank":9},{"country":"gb","rank":15},{"country":"ca","rank":12},{"country":"au","rank":12},{"country":"de","rank":17}],"verdicts":[{"verdict":"keep","reason":"The app is titled Guitar Tuner and offers 200+ guitar tunings (standard, drop, open, 7- and 12-string) with automatic tuning.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-18T05:08:11.793Z","attempts":1,"current":true},{"verdict":"keep","reason":"Its core purpose is tuning guitars by listening to the strings, with many guitar tunings. Its support for other instruments does not make it a general tuner alone, since guitar is its focus.","verifier":"list check","decided_at":"2026-10-18T05:08:11.793Z","attempts":1,"current":true}]},{"list":"instrument-tuning","list_name":"instrument tuning","status":"active","review_status":"checked","position":28,"tier":"D","score":59.5,"components":{"rating":93.2,"votes":77.6,"rank":67.4,"recency":0},"ranks":[{"country":"us","rank":23},{"country":"gb","rank":28},{"country":"ca","rank":25},{"country":"au","rank":31}],"verdicts":[{"verdict":"keep","reason":"It also tunes ukulele, bass, violin family, mandolin, banjo and balalaika, so it works as a general stringed-instrument tuner.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-18T05:08:11.793Z","attempts":1,"current":true},{"verdict":"keep","reason":"It tunes many stringed instruments, including ukulele, bass, violin family, mandolin and banjo, so it is not a guitar-only tuner.","verifier":"list check","decided_at":"2026-10-18T05:08:11.793Z","attempts":1,"current":true}]}]},"data_version":41516,"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-guitartunio-1448661287/"}}