{"schema_version":"1.0","generated_at":"2026-10-22T01:01:02.109Z","app":{"app_store_id":1062989244,"slug":"531-strength-1062989244","name":"531 Strength","subtitle":"Keep focus on your lifts","icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/cf/ab/d1/cfabd111-a267-bd59-69d2-04ea4ede48f6/AppIcon-0-0-1x_U007emarketing-0-7-0-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/531-strength/id1062989244?uo=4","price":0,"currency":"USD","rating":4.88314,"rating_count":11646,"in_app_purchases":true,"recent_rating":4.67,"recent_review_count":18,"reviews_checked_at":"2026-10-18T10:34:11.689Z","primary_genre":"Health & Fitness","version_date":"2026-10-16T14:04:22Z","updated_at":"2026-10-21T18:08:13.146Z","stale":false,"missing_since":null,"one_liner":"Calculates 5/3/1 weights, reps and sets from saved one-rep maxes, rounded to the plates you have.","verified_maker":false,"maker_site":null,"file_size_bytes":27001856,"minimum_os":"18.0","content_rating":"4+","language_count":1,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/23/8c/d9/238cd997-aa03-0bcd-f487-ee401f46e971/pr_source.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/80/52/ee/8052ee4b-2d20-9ce1-fecc-30e614d6ee60/pr_source.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/5f/1b/6c/5f1b6cf1-de41-150f-39ee-044157397bb7/pr_source.jpg/392x696bb.jpg","https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/83/89/45/8389450f-1436-0a64-ce07-641427470908/pr_source.jpg/392x696bb.jpg"],"developer_name":"Henrik Jachobsen","editors_choice":false,"url":"https://apptierlist.com/apps/531-strength-1062989244/","api_url":"https://apptierlist.com/api/v1/apps/531-strength-1062989244"},"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":"strength-training","list_name":"strength training","status":"active","review_status":"checked","position":31,"tier":"B","score":82.8,"components":{"rating":97.6,"votes":81.3,"rank":52.4,"recency":100},"ranks":[{"country":"gb","rank":35},{"country":"us","rank":46},{"country":"ca","rank":40}],"verdicts":[{"verdict":"keep","reason":"It is built around the 5/3/1 strength program and gives the calculated weights, reps and sets for each step in the cycle.","verifier":"claude-sonnet-5-5","decided_at":"2026-10-15T06:24:53.111Z","attempts":1,"current":true},{"verdict":"keep","reason":"approved from the list's side","verifier":"list check","decided_at":"2026-10-15T06:24:53.111Z","attempts":1,"current":true}]}],"history":[{"id":163668,"at":"2026-10-18T23:42:11.603Z","kind":"tier_changed","list":"strength-training","app_store_id":1062989244,"app":"531-strength-1062989244","from":"A","to":"B","reason":"rank shift: #28, score unchanged at 82.7, tier full (a quarter of the list)","job":"rescore"},{"id":136348,"at":"2026-10-17T02:04:13.384Z","kind":"tier_changed","list":"strength-training","app_store_id":1062989244,"app":"531-strength-1062989244","from":"B","to":"A","reason":"score 73.8 to 82.7","job":"rescore"},{"id":135650,"at":"2026-10-17T01:33:13.388Z","kind":"tier_changed","list":"strength-training","app_store_id":1062989244,"app":"531-strength-1062989244","from":null,"to":"B","reason":"score 60.6 to 73.8","job":"rescore"},{"id":102822,"at":"2026-10-15T10:28:36.039Z","kind":"tier_changed","list":"strength-training","app_store_id":1062989244,"app":"531-strength-1062989244","from":"D","to":null,"reason":"rank shift: #42, below the tiered top 40","job":"rescore"},{"id":96369,"at":"2026-10-15T06:43:53.122Z","kind":"tier_changed","list":"strength-training","app_store_id":1062989244,"app":"531-strength-1062989244","from":null,"to":"D","reason":"score 60.7","job":"rescore"},{"id":94911,"at":"2026-10-15T06:24:53.111Z","kind":"membership_added","list":"strength-training","app_store_id":1062989244,"app":"531-strength-1062989244","from":null,"to":"active","reason":"It is built around the 5/3/1 strength program and gives the calculated weights, reps and sets for each step in the cycle.","job":"shadow"},{"id":91854,"at":"2026-10-15T02:50:53.117Z","kind":"app_added","list":null,"app_store_id":1062989244,"app":"531-strength-1062989244","from":null,"to":null,"reason":"discovered","job":"import"}],"data_version":40432,"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/"}}