# Oracle's Lucky Coffer > Brain training games for mental arithmetic, memory, and cognitive enhancement. (iPhone/iPad app by Guangzhou Xiayu Trading Co., Ltd.) - Source: https://appshunter.io/ios/app/oracles-lucky-coffer/id6753865113 (this page in markdown: same URL + `.md`) - Developer: [Guangzhou Xiayu Trading Co., Ltd](https://appshunter.io/developer/1828139056) - Category: Games, Casual - Price: Free - Rating: 4.80/5 from 883 App Store ratings · 42 written reviews indexed - Age rating: 17+ - Requires: iOS 16 · 216 MB - Languages: American English, Brazilian Portuguese - Released: 2025-10-14 - Data updated: 2026-06-10 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/oracles-lucky-coffer/id6753865113/reviews.md ## What is Oracle's Lucky Coffer? Modes Brain Training: • Math Challenge: Solve rapid-fire addition, subtraction, multiplication, and division problems to sharpen your calculation skills and improve mental arithmetic • Memory Matching: Train your short-term memory in this classic card matching game  Cognitive Benefits for All Ages: • Suitable for both children and adults looking to improve cognitive functions • Multiple difficulty levels adapt to your skill level - from beginner to expert • Track your progress and watch your brainpower grow with each session  Perfect for: Mental exercise and cognitive training Improving concentration and focus Enhancing problem-solving skills Family brain games and educational entertainment ## Key features - Math Challenge - Memory Matching - Cognitive Training - Progress Tracking - Adaptive Difficulty ## Recent user reviews (10 of 42) All indexed reviews: https://appshunter.io/ios/app/oracles-lucky-coffer/id6753865113/reviews.md ### 1/5 — Scam *2026-03-31, version 1.1.7* Never pays out total lies Scam Faults advertisement faults game ### 5/5 — Fun slot *2026-03-14* Was a fun slot until payout. I made over $1000 and tried the INSTANT PAYOUT. It spun on payout Will and gave me $0.03 AFTER I SPIN 30 TIMES. What a crock! Will definitely send BAD REVIEW to TRUST PILOT. Only gave 5 starts to get review read ### 5/5 — Oracle’s Lucky Coffer *2026-03-12, version 1.1.6* Love fun hits haven’t cashed out big yet but small is nice too ### 1/5 — SCAM!!!!!! Fraud game *2026-03-12, version 1.1.6* SCAM, it doesn’t pay all it has is Advertising and more Advertising It will not pay out - You follow all their rules and they don’t pay out. ### 5/5 — Fun Game *2026-03-12* But the add thing is not registering that i am watching them ### 5/5 — Fun-Exciting *2026-03-07, version 1.1.6* Well i remember the add said NO WATCHING ADDS- and you have to watch adds. I also remember NO MINIMUM cash out- well, you have to win $1000. to cash out. It will be interesting to see if I even get it. Also I remember the add telling me you will get a bonus $100. Immediately deposit in your account-NOTHING-NaDa -Zilch. I always thought if you advertise your business and claim that customers will receive this or that , they did. It wasn’t a ploy to get people interested and hoodwinked. Depending upon the outcome of this i will do a sequel to this and inform folks on if I even receive the winning without depositing money or completing tasks . Wish one of the tasks was sleeping- ### 1/5 — SCAM!!!!!! Fraud game *2026-02-21, version 1.1.6* SCAM, it doesn’t pay all it has is Advertising and more Advertising It will not pay out ### 1/5 — Scam *2026-02-17, version 1.1.6* What a joke! They don't tell you about their scam gimmick until you played for the creators make money. I got up to $1,000 (the amount need to cash out) after you input your cash ap. It states your money has been sent and it's one penny 1cent. In their book $1,000 equates to 1 cent. Not worth you time, ### 5/5 — Mr. John Henry Gonzales *2026-02-15* I’m brand new at this one but I must say that it looks very promising. Try it. ### 1/5 — Game time *2026-02-08* What company allows man to present to hit a Woman with a pool stick that’s awful I hope this game closes down soon ## Frequently asked questions about Oracle's Lucky Coffer ### What does Oracle's Lucky Coffer do? Oracle's Lucky Coffer offers brain-training games designed to improve cognitive functions. It includes modes like Math Challenge for arithmetic practice and Memory Matching to train short-term memory. The app aims to enhance concentration, focus, and problem-solving skills. ### What are the key features of this brain training app? Key features include a Math Challenge mode for addition, subtraction, multiplication, and division, and a Memory Matching game. It also provides adaptive difficulty levels, progress tracking, and is suitable for both children and adults looking for mental exercise. ### Is Oracle's Lucky Coffer free to use? Yes, the app is free to use. It is supported by advertisements, meaning you will see ads while playing the games. There are no in-app purchases mentioned. ### Who is this app intended for? This app is perfect for anyone looking for mental exercise and cognitive training. It is suitable for children and adults aiming to improve concentration, focus, problem-solving skills, and for family brain games and educational entertainment. ### How does the app help improve cognitive functions? The app helps improve cognitive functions through engaging gameplay. The Math Challenge sharpens calculation skills and mental arithmetic, while Memory Matching trains short-term memory. Consistent play across different difficulty levels can lead to noticeable growth in brainpower. ## Version history (last 5 releases) ### 1.1.7 — 2026-03-14 bug fixed ### 1.1.6 — 2026-02-13 User experience optimization. ### 1.1.5 — 2026-01-22 bug fixed ### 1.1.4 — 2025-12-17 Optimize the gaming experience ### 1.1.3 — 2025-12-04 Fixed known issues. ## More apps by Guangzhou Xiayu Trading Co., Ltd - [Sort Frenzy](https://appshunter.io/ios/app/sort-frenzy/id6748938074) All apps by Guangzhou Xiayu Trading Co., Ltd: https://appshunter.io/developer/1828139056 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*