{"app_store_id":1198685408,"slug":"calculator-x-math-for-ipad-1198685408","name":"Calculator X: Math for iPad","subtitle":"Smart History, Plus Scientific","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/8c/79/f7/8c79f7c6-a7d1-39dd-e910-3bc87815bbe3/AppIcon-0-0-1x_U007emarketing-0-10-0-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/calculator-x-math-for-ipad/id1198685408?uo=4","price":0,"currency":"USD","rating":4.61972,"rating_count":6243,"in_app_purchases":true,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":null,"primary_genre":"Finance","version_date":"2024-05-19T20:22:59Z","updated_at":"2026-10-17T22:36:11.589Z","stale":false,"missing_since":null,"one_liner":"Smart History, Plus Scientific","verified_maker":false,"maker_site":null,"file_size_bytes":196670464,"minimum_os":"14.0","content_rating":"4+","language_count":15,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/71/3f/c8/713fc877-f655-32b0-f845-f3c2a1a02053/c76eccd2-968d-4fd2-8573-5d7171d61311_2841.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/6e/8c/20/6e8c206b-a882-8eef-56cf-b63795e62ea0/2cb4913c-5bba-4929-a85f-6ad15b576927_2847.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/26/39/d1/2639d1b0-fcf4-4959-787a-b0aacc736197/d8c59970-025a-4b75-afc2-9a80dc8c99be_2853.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/94/14/5e/94145eba-a29c-431d-c38e-60b11f34e2b2/02bf9e97-999b-4f57-a6d2-ac5b8edcecae_2870.jpg/392x696bb.jpg"],"developer_name":"Otrofy Inc.","editors_choice":false,"url":"https://apptierlist.com/apps/calculator-x-math-for-ipad-1198685408/","api_url":"https://apptierlist.com/api/v1/apps/calculator-x-math-for-ipad-1198685408","schema_version":"1.0","generated_at":"2026-10-22T04:00:33.700Z","data_as_of":"2026-10-22T00:40:13.753Z","description":"Calculator app for iPad, iPhone and Apple Watch is a free app with extended features that increases your productivity!\nDownload now and join the club of users impressed by the product!\n\nWHY YOU’LL LOVE CALCULATOR\n• Basic & Easy to Use Calculator app on iPad, iPhone and Apple Watch\n• History of Calculations: Save, Copy & Share\n• Edit Equation\n• Memory Last Calculation\n• Dark Mode\n• iPad, iPhone and Apple Watch Support\n• Drag and Drop\n• Split View\n\nEDIT EQUATION DURING CALCULATION\nYou can edit numbers anytime during calculation process.\n\nDARK MODE\nSwitch to Dark mode and enjoy the design! The dark mode protects eyes from bright colors, saves battery power and helps you focusing better.\n\nSHARE YOUR CALCULATIONS\nHaving a great result with your calculation? Save time and send to your contacts fast & simple by sharing with calculator.\n\nWE LOVE FEEDBACK\nWe always appreciate your feedback. Please keep sharing your experience, bugs and ideas to calculator.feedback@otrofy.com\n\nEnjoying Calculator and want more features? Please show us some love by giving a 5 star review, so we can keep updating with great new features!\n\nSTART CALCULATING TODAY\n\nTerms of Use: https://otrofy.com/terms.pdf\nPrivacy Policy: http://otrofy.com/calculator-privacy.pdf","facts":{"developer_id":532323150,"developer_url":"https://otrofy.com/calculator","first_released":"2017-02-13T22:37:51Z","support_url":"https://otrofy.com/calculator","privacy_url":"https://otrofy.com/calculator","website_url":"https://otrofy.com/calculator","app_version":"1.49","release_notes":"This app has been updated by Apple to prepare for watchOS 27 compatibility. No new features are included.\n\n- Fixed minor bugs and performance improvements.\n\nIt would be great to hear your feedback at calculator.feedback@otrofy.com","rating_current_version":4.61972,"rating_count_current_version":6243,"star_counts":[256,97,246,567,5077],"genres":["Finance","Education"],"languages":["AR","EN","FR","DE","HI","IT","JA","KO","PT","RU","ZH","ES","ZH","UK","VI"],"content_advisories":null,"device_families":["watch","iphone","ipad","ipod"],"chart":null},"freshness":{"apple_read_at":"2026-10-17T22:36:11.589Z","catalog_read_at":"2026-10-17T22:36:11.589Z","reviews_checked_at":null,"summary_written_at":null,"placed_at":"2026-10-17T03:31:13.390Z","scored_at":"2026-10-22T00:40:13.753Z"},"editorial":null,"memberships":[{"list":"calculation","list_name":"calculation","list_status":"active","list_url":"https://apptierlist.com/best/calculation/","position":53,"tier":null,"score":57,"components":{"rating":92.2,"votes":78.6,"rank":57.2,"recency":0},"status":"active","review_status":"checked","list_ranking_status":"ranked","confidence":"normal","judged_at":"2026-10-17T03:31:13.390Z"}],"main_list":"calculation","claim":{"status":"none","verified":false,"site_url":null,"verified_via":null,"verified_domain":null},"history":[{"id":165787,"at":"2026-10-19T02:00:12.044Z","kind":"tier_changed","list":"calculation","app_store_id":1198685408,"app":"calculator-x-math-for-ipad-1198685408","from":"D","to":null,"reason":"rank shift: #42, below the tiered top 40","job":"rescore"},{"id":148830,"at":"2026-10-17T23:41:11.543Z","kind":"tier_changed","list":"calculation","app_store_id":1198685408,"app":"calculator-x-math-for-ipad-1198685408","from":"F","to":"D","reason":"score 42.6 to 55.2","job":"rescore"},{"id":138981,"at":"2026-10-17T03:37:13.385Z","kind":"tier_changed","list":"calculation","app_store_id":1198685408,"app":"calculator-x-math-for-ipad-1198685408","from":null,"to":"F","reason":"score 42.6","job":"rescore"},{"id":138702,"at":"2026-10-17T03:31:13.390Z","kind":"membership_added","list":"calculation","app_store_id":1198685408,"app":"calculator-x-math-for-ipad-1198685408","from":null,"to":"active","reason":"Core job is an everyday calculator for iPad, iPhone and Apple Watch with history, edit equation and memory.","job":"shadow"},{"id":127408,"at":"2026-10-16T15:16:50.035Z","kind":"app_added","list":null,"app_store_id":1198685408,"app":"calculator-x-math-for-ipad-1198685408","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":"calculation","list_name":"calculation","status":"active","review_status":"checked","position":53,"tier":null,"score":57,"components":{"rating":92.2,"votes":78.6,"rank":57.2,"recency":0},"ranks":[{"country":"us","rank":38},{"country":"ca","rank":40},{"country":"au","rank":44},{"country":"gb","rank":36}],"verdicts":[{"verdict":"keep","reason":"Core job is an everyday calculator for iPad, iPhone and Apple Watch with history, edit equation and memory.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-17T03:31:13.390Z","attempts":1,"current":true},{"verdict":"keep","reason":"It is a general everyday calculator with history and editing, built for basic arithmetic. 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