{"app_store_id":906629042,"slug":"bubble-level-spirit-level-906629042","name":"Bubble Level - Spirit Level","subtitle":null,"icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/4e/56/14/4e561436-1916-c024-f511-3791f7f16aed/AppIcon-0-0-1x_U007epad-0-11-0-85-220.jpeg/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/bubble-level-spirit-level/id906629042?uo=4","price":0,"currency":"USD","rating":4.63088,"rating_count":3083,"in_app_purchases":null,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":null,"primary_genre":"Utilities","version_date":"2026-09-29T20:43:39Z","updated_at":"2026-10-20T11:50:11.794Z","stale":false,"missing_since":null,"one_liner":"Spirit level app for iPhone, iPad and iPod touch that measures surface level, angles and slopes.","verified_maker":false,"maker_site":null,"file_size_bytes":20824064,"minimum_os":"17.0","content_rating":"12+","language_count":9,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/PurpleSource122/v4/79/41/37/794137be-c25b-2baa-e9b9-5b9d0e5abad4/c0b96e4e-31bf-4228-9dcd-d4521d8fde6b_b.jpg/406x228bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource122/v4/d7/e6/22/d7e6229e-b872-ea81-65a1-2357f613f812/f509ad21-794d-49ca-bfb4-5c017a7e5fd6_a.jpg/406x228bb.jpg"],"developer_name":"Netviking AB","editors_choice":null,"url":"https://apptierlist.com/apps/bubble-level-spirit-level-906629042/","api_url":"https://apptierlist.com/api/v1/apps/bubble-level-spirit-level-906629042","schema_version":"1.0","generated_at":"2026-10-21T05:14:29.691Z","data_as_of":"2026-10-20T12:05:11.689Z","description":"Bubble Level is an accurate and simple to use spirit level for your iPhone, iPad and iPod touch.\n\nIt's great for aligning picture frames or for angle measurements.\n\nFeatures:\n◉ Measure the level of any surface.\n◉ It can be calibrated with the click of a button and the calibration is saved automatically. \n◉ It's accurate to one tenth of a degree.\n◉ Full Retina support.\n\nThis tool can be used for:\n◉ Picture frame alignment\n◉ Measuring angles and slopes\n◉ Checking the surface level of tables, shelves or any other object\n◉ Measuring the inclination of a ship, aircraft or car\n◉ Roof pitch calculation\n\n▶ Calibration instructions:\n- To calibrate the level, hold the device upright against a reference surface ( landscape mode with the button to the left ) and press the red Calibrate button.\n\nDownload this app today!","facts":{"developer_id":425652251,"developer_url":null,"first_released":"2014-08-14T02:30:23Z","support_url":null,"privacy_url":null,"website_url":null,"app_version":"2.2","release_notes":"●  Bug fixes and improvements.\n\nDownload this update today!","rating_current_version":4.63088,"rating_count_current_version":3083,"star_counts":null,"genres":["Utilities","Navigation"],"languages":["EN","FR","DE","JA","KO","ZH","ES","SV","ZH"],"content_advisories":["Infrequent/Mild Simulated Gambling"],"device_families":null,"chart":null},"freshness":{"apple_read_at":"2026-10-20T11:50:11.794Z","catalog_read_at":null,"reviews_checked_at":null,"summary_written_at":"2026-10-20T11:44:11.601Z","placed_at":"2026-10-19T03:15:12.113Z","scored_at":"2026-10-20T12:05:11.689Z"},"editorial":{"one_liner":"Spirit level app for iPhone, iPad and iPod touch that measures surface level, angles and slopes.","what_is":"Bubble Level is a spirit level app for iPhone, iPad and iPod touch, listed under Utilities. It measures the level of a surface and can be calibrated with the press of a button, with the calibration saved automatically. The listing states accuracy to one tenth of a degree and full Retina support.","good_for":["Aligning picture frames","Checking whether a table or shelf is level","Measuring angles, slopes or roof pitch"],"pricing":"Bubble Level - Spirit Level 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":"How accurate is it?","a":"It is accurate to one tenth of a degree."},{"q":"How do I calibrate it?","a":"Hold the device upright against a reference surface in landscape mode with the button on the left, then press the red Calibrate button. The calibration is saved automatically."}],"model":"claude-haiku-5-5","created_at":"2026-10-20T11:44:11.601Z"},"memberships":[{"list":"level-measurement","list_name":"level measurement","list_status":"active","list_url":"https://apptierlist.com/best/level-measurement/","position":4,"tier":"S","score":91.3,"components":{"rating":90.8,"votes":80.2,"rank":94.2,"recency":100},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-19T03:15:12.113Z"}],"main_list":"level-measurement","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"history":[{"id":178161,"at":"2026-10-19T16:44:11.534Z","kind":"tier_changed","list":"level-measurement","app_store_id":906629042,"app":"bubble-level-spirit-level-906629042","from":null,"to":"S","reason":"score 67.6 to 91.4","job":"rescore"},{"id":167150,"at":"2026-10-19T03:15:12.113Z","kind":"membership_added","list":"level-measurement","app_store_id":906629042,"app":"bubble-level-spirit-level-906629042","from":null,"to":"active","reason":"It is a spirit level app built to check whether surfaces like tables and shelves are level, accurate to a tenth of a degree.","job":"shadow"},{"id":160772,"at":"2026-10-18T08:35:12.600Z","kind":"app_added","list":null,"app_store_id":906629042,"app":"bubble-level-spirit-level-906629042","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":"level-measurement","list_name":"level measurement","status":"active","review_status":"checked","position":4,"tier":"S","score":91.3,"components":{"rating":90.8,"votes":80.2,"rank":94.2,"recency":100},"ranks":[{"country":"us","rank":7},{"country":"gb","rank":8},{"country":"ca","rank":9},{"country":"au","rank":3},{"country":"de","rank":7}],"verdicts":[{"verdict":"keep","reason":"It is a spirit level app built to check whether surfaces like tables and shelves are level, accurate to a tenth of a degree.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-19T03:15:12.113Z","attempts":1,"current":true},{"verdict":"keep","reason":"A dedicated spirit level app that uses the phone's sensors to check whether surfaces are level. That is exactly this list's purpose, and it matches the existing members.","verifier":"list check","decided_at":"2026-10-19T03:15:12.113Z","attempts":1,"current":true}]}]},"data_version":39584,"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/bubble-level-spirit-level-906629042/"}}