{"app_store_id":662890455,"slug":"guitar-tuner-ukulele-bass-662890455","name":"Guitar Tuner - Ukulele & Bass","subtitle":"DoubleTune: Tune Violin & More","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/d6/dd/0b/d6dd0b11-e205-00de-4595-c0746d32bb7f/AppIcon-0-0-1x_U007emarketing-0-7-0-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/guitar-tuner-ukulele-bass/id662890455?uo=4","price":0,"currency":"USD","rating":4.38734,"rating_count":7474,"in_app_purchases":true,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":"2026-10-18T19:28:11.620Z","primary_genre":"Music","version_date":"2024-08-15T19:49:41Z","updated_at":"2026-10-22T05:53:13.415Z","stale":false,"missing_since":null,"one_liner":"Tuner and chord-learning app for guitar, ukulele, bass and other string instruments, with tuning presets and games.","verified_maker":false,"maker_site":null,"file_size_bytes":273702912,"minimum_os":"13.0","content_rating":"4+","language_count":11,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/44/06/c6/4406c6b7-8318-a931-5211-7a93ca79808c/pr_source.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/e4/03/29/e4032946-5cfd-35d2-fd83-316fd2f494f0/pr_source.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/31/a4/8e/31a48eec-bb00-e935-7d4e-7aa1be9a5967/pr_source.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/48/7a/c6/487ac687-a7da-fc80-218a-c75f9aee14d8/pr_source.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/2d/c6/28/2dc62871-fa66-def1-5956-b86df82f4150/pr_source.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/f5/47/ea/f547eab2-c5f0-6042-ebd1-d7de0aaf28f7/pr_source.png/392x696bb.png"],"developer_name":"Gismart Ltd","editors_choice":false,"url":"https://apptierlist.com/apps/guitar-tuner-ukulele-bass-662890455/","api_url":"https://apptierlist.com/api/v1/apps/guitar-tuner-ukulele-bass-662890455","schema_version":"1.0","generated_at":"2026-10-23T07:59:33.141Z","data_as_of":"2026-10-23T04:35:15.821Z","description":"DoubleTune is an advanced tuning app created by professional musicians. It’s suitable for tuning a range of string musical instruments, learning new chords and refreshing your memory of already-learned ones. Competitive educational games are equally useful for beginners and mastered guitar players. One way or another, DoubleTune is a must-have app for any musician.\n\nMade by experienced guitarists, it is simple, fast, intuitive and accurate. It’s perfect for tuning acoustic, electric and bass guitars, along with ukulele, banjo, violin and cello.\n\n- Choose between a range of tuning presets and modes:\n- Tune Guard™;\n- Standard and Popular tunings (6 and 12 strings);\n- Drop and Double Drop;\n- Open, Modal and Lower;\n- Ukulele tunings;\n- Bass guitar tunings; \n- Chromatic tuner;\n- Auto and Manual modes; \n\nTune Guard™ is a smart feature that helps you tune safely. It warns you with both visual red signal and string highlighting when this string is too tight and is about to break. The mode is designed to help beginners and inexperienced musicians save their strings, time and money.\n\nYou can easily tune:\n- Electric and Acoustic guitars;\n- Western and Classic guitars;\n- Bass 4 and 5 strings;\n- Ukulele;\n- Violin;\n- Cello;\n- Mandolin;\n- Viola;\n- Balalaika;\n- Banjo;\n- And any other string instruments.\n\nGet the most out of DoubleTune games:\n- Learn chords! Hone your skills and get familiar with many of common chords. These entertaining games focus on chords and chord diagrams. You can easily transfer this experience to real guitar playing!\n- Ear training. Learn basics of guitar music theory in a fun way. Master your musical hearing and chord recognition ability with the help of quizzes.\n- Stay competitive and try to get the best score in less time!\n\nGreat for professional and beginner guitarists! Enjoy tuning your instruments at the astoundingly high level. \n\nThe app contains the following subscription options:\n- Weekly with a 3-day free trial at $3.99;\n- Yearly with a 7-day free trial at $21.99;\n- Weekly with a 30-day free trial at $3.99;\n- Music One weekly subscription with a 3-day free trial for 9.99/weekly;\n- Music One yearly with a 7-day free trial at $59.99;\n- Monthly at $14.99. \n- Payment will be charged to iTunes Account at confirmation of purchase.\n- Subscription automatically renews unless auto-renew is turned off at least 24-hours prior to the end of the current period.\n- The account is charged for renewal within 24-hours before the end of the current period.\n- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase.\n- The cost of renewal is equal to the value that “Apple’s App Store Matrix” determines as the equivalent of the subscription price in $USD.\n- Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication.\n- You can subscribe for unlimited access to our PRO services: \n* Tune Guard™ for safe tuning; \n* all instruments;\n* all games.\n\nPrivacy Policy: https://gismart.com/privacy-policy/\nTerms of Service: https://gismart.com/terms-of-service/\n\n*Price are equal to the value that \"Apple's App Store Matrix\" determines is the equivalent of the subscription price in $USD.\n\n* Tune Guard™ feature does not guarantee 100% safely tuning. Gismart Ltd. takes no responsibility for causing any damage to your strings.","facts":{"developer_id":1550086700,"developer_url":"https://gismart.com/doubletune/","first_released":"2013-07-07T03:00:43Z","support_url":"https://gismart.com/inquiry/","privacy_url":"https://gismart.com/privacy-policy/","website_url":"https://gismart.com/doubletune/","app_version":"4.34","release_notes":"We hope you’re enjoying the app! Please, keep it regularly updated to always have our greatest features and latest improvements.\n- Performance and stability improvements\n- Bugs fixes","rating_current_version":4.38734,"rating_count_current_version":7474,"star_counts":[765,86,234,793,5597],"genres":["Music","Utilities"],"languages":["EN","FR","IT","JA","NB","PT","ZH","ES","SV","TH","ZH"],"content_advisories":null,"device_families":["iphone","ipad","ipod"],"made_for_iphone_duo":null,"chart":null},"freshness":{"apple_read_at":"2026-10-22T05:53:13.415Z","catalog_read_at":"2026-10-17T09:38:13.401Z","reviews_checked_at":"2026-10-18T19:28:11.620Z","summary_written_at":"2026-10-18T00:16:11.603Z","placed_at":"2026-10-16T15:24:49.623Z","scored_at":"2026-10-23T04:35:15.821Z"},"editorial":{"one_liner":"Tuner and chord-learning app for guitar, ukulele, bass and other string instruments, with tuning presets and games.","what_is":"DoubleTune is a tuning app for a range of string instruments, including acoustic, electric and bass guitars, ukulele, banjo, violin and cello. It offers tuning presets, a chromatic tuner, and a Tune Guard feature that warns when a string is too tight. The app also includes games for learning chords and ear training.","good_for":["Tuning guitars, ukulele, banjo, violin or cello","Beginners who want a warning before strings are overtightened","Practising chord diagrams and ear training through quiz games"],"pricing":"Guitar Tuner - Ukulele & Bass is free to download, with in-app purchases on the App Store.","faq":[{"q":"Is the app free?","a":"The app is free to download. The App Store lists in-app purchases, including Weekly, Yearly and Monthly subscriptions, and some options include a free trial period."},{"q":"Which instruments can it tune?","a":"The listing names acoustic, electric and bass guitars, ukulele, banjo, violin, cello, mandolin, viola and balalaika, plus a chromatic tuner and any other string instruments."},{"q":"What is Tune Guard?","a":"Tune Guard is a feature that shows a red visual signal and highlights a string when it is too tight and about to break. The listing describes it as one of the PRO services."}],"model":"claude-haiku-5-5","created_at":"2026-10-18T00:16:11.603Z"},"memberships":[{"list":"ukulele-tuning","list_name":"ukulele tuning","list_status":"draft","list_url":null,"position":null,"tier":null,"score":39.9,"components":{"rating":78.3,"votes":81.1,"rank":0,"recency":0},"status":"active","review_status":"checked","list_ranking_status":"under_review","confidence":"provisional","judged_at":"2026-10-16T15:24:49.623Z"},{"list":"guitar-tuning","list_name":"guitar tuning","list_status":"active","list_url":"https://apptierlist.com/best/guitar-tuning/","position":12,"tier":"C","score":62.6,"components":{"rating":78.3,"votes":81.1,"rank":91,"recency":0},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-16T15:24:49.623Z"},{"list":"instrument-tuning","list_name":"instrument tuning","list_status":"active","list_url":"https://apptierlist.com/best/instrument-tuning/","position":27,"tier":"C","score":60.8,"components":{"rating":78.3,"votes":81.1,"rank":83.6,"recency":0},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-16T15:24:49.623Z"}],"main_list":"guitar-tuning","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"maker":null,"history":[{"id":146894,"at":"2026-10-17T12:14:13.437Z","kind":"tier_changed","list":"guitar-tuning","app_store_id":662890455,"app":"guitar-tuner-ukulele-bass-662890455","from":null,"to":"C","reason":"score 39.9 to 64","job":"rescore"},{"id":133301,"at":"2026-10-16T19:37:41.230Z","kind":"tier_changed","list":"instrument-tuning","app_store_id":662890455,"app":"guitar-tuner-ukulele-bass-662890455","from":"F","to":"C","reason":"score 39.4 to 60.9","job":"rescore"},{"id":130429,"at":"2026-10-16T16:11:07.622Z","kind":"tier_changed","list":"instrument-tuning","app_store_id":662890455,"app":"guitar-tuner-ukulele-bass-662890455","from":null,"to":"F","reason":"score 39.4","job":"rescore"},{"id":128018,"at":"2026-10-16T15:24:49.623Z","kind":"membership_added","list":"ukulele-tuning","app_store_id":662890455,"app":"guitar-tuner-ukulele-bass-662890455","from":null,"to":"active","reason":"Ukulele is in the title, and the listing offers dedicated ukulele tunings.","job":"shadow"},{"id":128017,"at":"2026-10-16T15:24:49.623Z","kind":"membership_added","list":"instrument-tuning","app_store_id":662890455,"app":"guitar-tuner-ukulele-bass-662890455","from":null,"to":"active","reason":"It also tunes ukulele, banjo, violin, cello, mandolin, viola and balalaika, and includes a chromatic tuner.","job":"shadow"},{"id":128016,"at":"2026-10-16T15:24:49.623Z","kind":"membership_added","list":"guitar-tuning","app_store_id":662890455,"app":"guitar-tuner-ukulele-bass-662890455","from":null,"to":"active","reason":"Its main job is tuning acoustic, electric and bass guitars, with many presets, Tune Guard and auto/manual modes.","job":"shadow"},{"id":117759,"at":"2026-10-16T03:19:51.804Z","kind":"app_added","list":null,"app_store_id":662890455,"app":"guitar-tuner-ukulele-bass-662890455","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":"ukulele-tuning","list_name":"ukulele tuning","status":"active","review_status":"checked","position":null,"tier":null,"score":39.9,"components":{"rating":78.3,"votes":81.1,"rank":0,"recency":0},"ranks":[],"verdicts":[{"verdict":"keep","reason":"Ukulele is in the title, and the listing offers dedicated ukulele tunings.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-16T15:24:49.623Z","attempts":1,"current":true},{"verdict":"keep","reason":"Ukulele is named in the title, and the app includes dedicated ukulele tunings, so ukulele users would compare it with the other options.","verifier":"list check","decided_at":"2026-10-16T15:24:49.623Z","attempts":1,"current":true}]},{"list":"guitar-tuning","list_name":"guitar tuning","status":"active","review_status":"checked","position":12,"tier":"C","score":62.6,"components":{"rating":78.3,"votes":81.1,"rank":91,"recency":0},"ranks":[{"country":"us","rank":11},{"country":"gb","rank":10},{"country":"ca","rank":9},{"country":"au","rank":10},{"country":"de","rank":10}],"verdicts":[{"verdict":"keep","reason":"Its main job is tuning acoustic, electric and bass guitars, with many presets, Tune Guard and auto/manual modes.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-16T15:24:49.623Z","attempts":1,"current":true},{"verdict":"keep","reason":"Its core is guitar tuning, with many guitar tuning presets and modes for acoustic, electric and bass guitars.","verifier":"list check","decided_at":"2026-10-16T15:24:49.623Z","attempts":1,"current":true}]},{"list":"instrument-tuning","list_name":"instrument tuning","status":"active","review_status":"checked","position":27,"tier":"C","score":60.8,"components":{"rating":78.3,"votes":81.1,"rank":83.6,"recency":0},"ranks":[{"country":"us","rank":26},{"country":"gb","rank":14},{"country":"ca","rank":14},{"country":"au","rank":13},{"country":"de","rank":20}],"verdicts":[{"verdict":"keep","reason":"It also tunes ukulele, banjo, violin, cello, mandolin, viola and balalaika, and includes a chromatic tuner.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-16T15:24:49.623Z","attempts":1,"current":true},{"verdict":"keep","reason":"It tunes many string instruments by pitch detection: guitar, bass, ukulele, banjo, violin and cello, plus a chromatic mode.","verifier":"list check","decided_at":"2026-10-16T15:24:49.623Z","attempts":1,"current":true}]}]},"data_version":41625,"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-ukulele-bass-662890455/"}}