# GREG - A Mathematical Puzzle Game To Train Your Brain Skills — user reviews > 102 indexed App Store user reviews of GREG by Marco Torretta, rated 4.50/5 from 98 ratings. - Source: https://appshunter.io/ios/app/greg-a-mathematical-puzzle-game-to-train-your-brain-skills/id895726517/reviews - App overview in markdown: https://appshunter.io/ios/app/greg-a-mathematical-puzzle-game-to-train-your-brain-skills/id895726517.md - Rating breakdown: 5★ 62 · 4★ 27 · 3★ 7 · 2★ 0 · 1★ 2 ## What do users think of GREG? Overall sentiment: positive **Pros** - 🧠 Excellent brain exercise and mental math training - 😊 Highly addictive and engaging gameplay - 🎮 Multiple difficulty levels for all skill ranges - 🎨 Clean, simple design with good color palette - ⚡ Fast-paced and challenging mechanics - 🏆 Helps improve mental arithmetic and reflexes - 🔧 Stable, bug-free performance - 👨‍👩‍👧‍👦 Suitable for all ages from kids to adults - 🎯 Easy to learn but difficult to master - 💰 Good value with reward system (gold) **Cons** - 🔄 Repetitive gameplay becomes boring over time - 📱 Needs optimization for new screen shapes - ⏱️ Timer and color changes cause stress - 🎨 Color coding system is confusing - 😰 Game becomes frustratingly difficult at higher levels - 🔊 Lacks variety in game mechanics - ⚙️ Responsive tap detection issues reported - 📊 Limited gameplay innovation after extended play **Commonly reported bugs** - Numbers switching around unexpectedly - Taps not registering on numbers - Game ending abruptly - Non-responsive interface requiring multiple taps - Game acting up on same level after extended play **Most requested features** - Multiplication, subtraction, and division modes - Slower speed levels for elementary school students - Gameplay variety and twists to prevent boredom - Level save/checkpoint function - Different layout variations - Beginner and novice difficulty tiers - Classroom/teaching tool version - Continuous countdown system instead of discrete levels ## Newest reviews (18 of 102) ### 4/5 — Great app for mental skills *2018-04-09, version 3.1.5* Offers a great space to develop Math skills. The time limit is useful to increase metacognition skills. ### 4/5 — Fun and addictive! *2017-07-25, version 3.1.5* Good game. Fun and addictive. ### 5/5 — Great *2017-04-25, version 3.1.5* Enjoy the math. It's the numbers!! Great fun. Give it a try you'll enjoy it! ### 5/5 — TRYING TO BEAT OLD AGE *2017-03-25, version 3.1.5* Game keeps my brain energized. Hope it helps create more neuron connections and a healthier mind ### 5/5 — Fun and highly addictive *2017-03-05* A great game to teach anyone that numbers are fun. ### 5/5 — Very good *2017-01-28, version 3.1.5* Very good ### 5/5 — Great to stay sharp *2017-01-14, version 3.1.5* GREG is a fun game to keep your mental math sharp. It's a game for all ages to challenge themselves. ### 5/5 — Great game to practice math skills *2016-12-21, version 3.1.5* A great game to practice your math skills. Many levels to choose from. I get stressed with the timer and the color changes. ### 5/5 — Solid game *2016-11-05, version 3.1.5* Addicting ### 5/5 — Numbers grid good for attention retention *2016-10-31, version 3.1.5* The first few times were frustrating but playing it more calmed the reaction to the action on the board and resulted in accumulation of more points and GOLD. ### 4/5 — A game for everyone *2016-10-19, version 3.1.5* Great game for challenging your mind and reflexes ### 5/5 — Clever and addictive game *2016-10-01* Very addictive and fun, and looks good too. Suspect great for kids, though I'm a full-grown adult! ### 4/5 — Fun *2016-09-27, version 3.1.5* Fun ### 5/5 — Fun *2016-08-17, version 3.1.5* I love math and this is a fun way to enjoy math. It help build your memory and speed. Two thumbs up. ### 4/5 — Great game for my kids *2016-08-14, version 3.1.5* I like it too, but don't often get to play ; ) No annoying music or crazy blinding graphics. Thanks! ### 5/5 — Awesomr *2016-08-14, version 3.1.5* This game is the perfect brain teaser. I love that my boyfriend and I can challenge each other! ### 5/5 — Educational and fun *2016-08-06, version 3.1.5* Educational and fun! ### 4/5 — Keeps your brain working *2016-08-05, version 3.1.5* Like it for keeping my mental math sharp. ## Most critical reviews (10 lowest-rated) ### 2/5 — Repetitive *2016-04-06* Ok game, kinda repetitive and dull. ### 2/5 — Changed my rating from 5 to 2 stars because... *2015-07-29, version 3.0* ...after a while, and on the same level, it began acting up: switching numbers around, not accepting taps on numbers, had to be tapped multiple times, ending the game abruptly. It stopped being fun or challenging so I ended up deleting it. My skills were improving & I was playing faster, but I did not want to advance to a more difficult level yet. Instead the game itself became so much more tricky, difficult, non-responsive, it was no longer enjoyable. Original review: A fun fast-paced game with multiple levels, it will challenge your mental skills. ### 2/5 — Good idea... But... *2014-09-07* The game sounded better than it was. Gameplay is flat and never seems to reach a point and which it becomes exciting. It could be improved and become a great game, but it's nowhere near that just yet. ### 3/5 — Love and challenging *2019-07-15, version 3.1.5* I love this app. It is always fun to have some challenge in the game ### 3/5 — Playa *2017-08-15, version 3.1.5* Easy enough ### 3/5 — Fun *2016-03-28, version 3.1.5* Challenging to think on the spot like this but gets boring after a while ### 3/5 — Good exercise *2015-11-15* Keeps you thinking ### 3/5 — Great yet simple app *2015-07-09* This is a great yet simple app however I did get bored of it quickly. Good to pass time when waiting at random places. ### 3/5 — A bit boring *2015-07-05* This game is boring. Game play is not interesting enough to keep my attention. It lacks the finesse of Calcit and each level is the same. Meanwhile, the numbers change colour to indicate lack of use; I found it hard to remember what the colours meant and probably wasn't interested enough to find out! Am going to delete because life's too short to bother with 2nd rate games.... ### 3/5 — Meh *2014-12-15* Interesting. ## Most praised reviews (10 highest-rated) ### 5/5 — Good game *2022-10-31* Very good to exercise your brain ### 5/5 — Wonderful game I have enjoyed for many years *2022-09-21* Helps me to stay sharp and I love the colour palette. Needs to be updated for new screen shapes. ### 5/5 — Fun, not rocket science *2022-07-23, version 3.1.5* This can be enjoyable ### 5/5 — Good Game *2021-05-20* It's a good exercise for the brain ### 5/5 — Awesome game! *2021-02-08, version 3.1.5* Great for learning! I highly recommend this game! ### 5/5 — Awesome *2019-06-27, version 3.1.5* Plus I get gold to write a review! ### 5/5 — Great game *2019-02-09, version 3.1.5* Helps keep the ol’ noggin sharp! ### 5/5 — Great app *2018-10-30, version 3.1.5* Great! ### 5/5 — Awesome! *2017-10-04, version 3.1.5* Very interesting game I recommend it as something to play for fun and learning. ### 5/5 — I hate math but I love this game *2017-07-15, version 3.1.5* Awesome Game. Hopefully this game will continue to get updated for along time. --- *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.*