Bori: Mystery Brain Training

About

Twenty detective cases. Five kinds of thinking. No brain-age score. A pocket watch goes missing at 221B. A cat stops grinning. A concert hall loses its sound. Each case opens with an illustrated cover and a page of story, then asks you to do what a detective actually does. FIVE KINDS OF THINKING • Spot the Change — two accounts of the same night, one detail altered. Find every difference, and only the real ones. • Find the Missing Piece — a statement leaves something out. Work out which fact is absent from what you were told. • Connect the Evidence — match each claim to the evidence that actually supports it, not the one sitting next to it. • Remove the Noise — some sentences carry the case. Others only sound like they do. Cut the ones leading nowhere. • Verify First — before you accept the story, decide which single thing you would check to know whether it holds. WHY IT IS BUILT THIS WAY These are the steps people skip when something else will answer for them. Bori is not a memory game with a score at the end and no reason behind it. Every drill maps to a specific finding, and the app shows you the papers: retrieval practice beating rereading, distributed practice beating massed practice, the research on cognitive offloading, and the FTC action that explains why apps in this category should be careful about what they promise. Bori gives no IQ number, no brain age, and no dementia risk score, because there is no honest way for an app like this to produce one. It is a general education and wellness tool for practising habits of thought. It does not diagnose or treat anything. TWENTY CASE FILES Each case carries its own cover art, its own written mystery, and a fixed difficulty band from Light to Brutal, so you can pick the challenge instead of grinding for it. Every replay draws different problems from the same case. PRIVATE BY DEFAULT No account, no sign-up, no email. Your progress stays on your iPhone. The only thing that leaves the device is a leaderboard score: an anonymous per-install identifier, the case number, the score, and the country the connection came from. Nothing that identifies you. FIVE CASES FREE Five cases are free in full — the whole story, all five drills, the leaderboard, and the research page. Full access opens the remaining fifteen, including the hardest bands the free set never reaches. Bori speaks English, Korean, Japanese, and Simplified Chinese — the cases and the problems, not just the buttons. FULL ACCESS SUBSCRIPTION • Length: weekly or yearly, automatically renewed each period • Price: see in-app pricing for your region • Payment is charged to your Apple Account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period • Subscriptions may be managed and auto-renewal turned off in your Account Settings on the App Store Terms of Use (EULA): https://www.pentarab.com/bori/terms Privacy Policy: https://www.pentarab.com/bori/privacy