{"schema_version":"1.0","generated_at":"2026-10-21T06:06:41.155Z","app":{"app_store_id":531275673,"slug":"chess-tactics-and-lessons-531275673","name":"Chess Tactics and Lessons","subtitle":null,"icon_url":"https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/92/2f/32/922f32f5-6734-15d9-a319-9f8f76425ec8/AppIcon-0-0-1x_U007emarketing-0-11-0-sRGB-85-220.png/512x512bb.jpg","store_url":"https://apps.apple.com/us/app/chess-tactics-and-lessons/id531275673?uo=4","price":0,"currency":"USD","rating":4.75992,"rating_count":5040,"in_app_purchases":null,"recent_rating":null,"recent_review_count":null,"reviews_checked_at":"2026-10-18T12:49:11.694Z","primary_genre":"Games","version_date":"2026-10-08T03:53:44Z","updated_at":"2026-10-20T02:58:11.537Z","stale":false,"missing_since":null,"one_liner":"Free chess app offering 30,000+ tactics, lessons, and openings that adjusts to the player's ability as they play.","verified_maker":false,"maker_site":null,"file_size_bytes":119460864,"minimum_os":"26.0","content_rating":"4+","language_count":7,"screenshots":["https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/ed/b2/1d/edb21d23-415c-c858-8cad-83a7b032b18b/mzl.nxwmtqug.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/03/ac/c1/03acc18b-84cc-4e3e-6783-9daf0d9f9dbb/mzl.nhevwhaw.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/3b/be/88/3bbe8885-8889-4266-e50c-65a1b89f9fab/pr_source.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/3f/bd/7a/3fbd7a76-dad0-3fbb-6685-69bd1e0a3dcc/mzl.jdqtkpth.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/5e/16/24/5e16243a-e627-1033-1668-035967fbe26f/mzl.ouxeadkj.png/392x696bb.png","https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/fe/66/08/fe66088b-e4fb-f60a-5a1e-b955600c5677/mzl.ckxzqxkl.png/392x696bb.png"],"developer_name":"Lockwood Productions, LLC","editors_choice":null,"url":"https://apptierlist.com/apps/chess-tactics-and-lessons-531275673/","api_url":"https://apptierlist.com/api/v1/apps/chess-tactics-and-lessons-531275673"},"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":"chess-learning","list_name":"chess learning","status":"active","review_status":"checked","position":8,"tier":"A","score":91.1,"components":{"rating":94.8,"votes":78.6,"rank":91,"recency":100},"ranks":[{"country":"us","rank":5},{"country":"ca","rank":12},{"country":"gb","rank":6},{"country":"au","rank":18},{"country":"de","rank":9}],"verdicts":[{"verdict":"keep","reason":"Built around chess tactics, lessons and openings that adapt to ability, beginner-friendly even for people who don't know the rules, with explanations and engine","verifier":"claude-sonnet-5-5","decided_at":"2026-10-18T02:16:11.692Z","attempts":1,"current":true},{"verdict":"keep","reason":"The app is built around improving at chess through tactics puzzles, lessons and opening practice. It says it is beginner-friendly even for people who don't know the rules yet, so it fits chess learning.","verifier":"list check","decided_at":"2026-10-18T02:16:11.692Z","attempts":1,"current":true}]}],"history":[{"id":160184,"at":"2026-10-18T08:11:11.704Z","kind":"tier_changed","list":"chess-learning","app_store_id":531275673,"app":"chess-tactics-and-lessons-531275673","from":"S","to":"A","reason":"rank shift: #8, score unchanged at 91.2, tier full (a quarter of the list)","job":"rescore"},{"id":150478,"at":"2026-10-18T02:29:11.607Z","kind":"tier_changed","list":"chess-learning","app_store_id":531275673,"app":"chess-tactics-and-lessons-531275673","from":null,"to":"S","reason":"score 91.2","job":"rescore"},{"id":150236,"at":"2026-10-18T02:16:11.692Z","kind":"membership_added","list":"chess-learning","app_store_id":531275673,"app":"chess-tactics-and-lessons-531275673","from":null,"to":"active","reason":"Built around chess tactics, lessons and openings that adapt to ability, beginner-friendly even for people who don't know the rules, with explanations and engine","job":"shadow"},{"id":139379,"at":"2026-10-17T03:40:13.442Z","kind":"app_added","list":null,"app_store_id":531275673,"app":"chess-tactics-and-lessons-531275673","from":null,"to":null,"reason":"discovered","job":"import"}],"data_version":39621,"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/"}}