Comparison

Cube Cube vs Sum Is

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Cube Cube

Engage in a strategic block puzzle game where you drag and drop pieces to fill rows and score points. Master timed challenges and earn bonuses for clearing multiple rows or consecutive turns.

Highlights
  • Drag blocks to the board
  • Fill rows to clear them
  • Timed games with 3-minute matches
  • Score Combo Bonuses
  • Score Streak Bonuses
  • Deep strategy elements
Features
Read full description

Ready to put your puzzle skills to the test? Cube Cube is the addictive block puzzle game that's easy to pick up, impossible to put down, and always challenging you to beat your best score. Every block placement is an opportunity to build bigger combos, clear more rows, and push your score even higher. Whether you're chasing a personal record or battling friends for the top spot, there's always another challenge waiting. How to Play Drag colorful blocks onto the board and complete rows and columns to clear them, but don't run out of space! Compete with Friends Think you're the best? Prove it. Invite your friends, compete for the highest score, and see who can build the biggest combos. Why You'll Love Cube Cube - Addictive, easy-to-learn gameplay - Satisfying combo mechanics - Quick games that fit any schedule - Colorful visuals and smooth gameplay Whether you have two minutes or two hours, Cube Cube is the perfect game to chase bigger scores and keep coming back for "just one more game." Download Cube Cube today, challenge your friends, and see how high you can score!

About

Sum Is

Features
Read full description

Welcome to the Ultimate Number Puzzle Challenge! If you love math puzzles, number games, brain training, and fast-paced competition, this is the perfect game for you. Our game brings you a 4×4 number grid, an ever-changing target number, and a thrilling 90-second challenge that tests your speed, focus, and strategy. Play solo or compete with players around the world — everyone gets the same grid in real time, making the competition fair, skill-based, and addictive! This is not just another number game. It’s a smart blend of math, logic, pattern recognition, and quick thinking condensed into an exciting 1.5-minute round. Whether you're a casual gamer looking for fun, a student trying to improve mental math skills, or a puzzle master searching for your next obsession — this game is built for you. -> How the Game Works Every match gives you a new 4×4 matrix filled with numbers from 1 to 9. On top of the screen, you see the target number. Your task is simple: -> Select a combination of tiles whose sum matches the target number. -> Submit and earn points instantly. -> Continue making combinations as fast as you can before time runs out! Each combination you find tests your math skills, memory, and decision-making. As you progress through the match, your brain begins to recognize patterns faster — turning this into a true test of speed and intellect. Why Players Love This Game This game is designed to hit the sweet spot between simplicity and challenge. Players love: The quick 1.5 minute games The equal grid for all players The fair and competitive leaderboard The simple but highly addictive gameplay The brain-boosting mental math practice The thrill of beating your own high score The feeling of improving with every round If you enjoy games that sharpen your skills while keeping you entertained, this puzzle will keep you hooked for hours! -> A Perfect Mix of Fun and Brain Training This is more than just a game — it’s a full mental workout packed into a short burst of gameplay. Playing daily can: -> Improve your mental math speed -> Enhance pattern recognition -> Strengthen short-term memory -> Increase focus and concentration -> Sharpen decision-making under pressure Whether you're preparing for competitive exams, boosting your brain health, or just relaxing after a long day — this game trains your mind naturally while keeping the fun alive. -> Multiplayer Fun with Global Competition Every 1.5-minute session is a global match where everyone sees the same grid. This makes every game: -> Fair — no randomness advantage -> Competitive — real-time high scores -> Engaging — you know others are solving the same puzzle Once the timer ends, you instantly see the live leaderboard — giving you that satisfying feeling of competition and progress. Compete against friends, family, or thousands of players worldwide. -> Features That Make the Game Stand Out -> Simple to Play, Hard to Master The rules are easy, but mastering the game requires smart thinking, quick calculation, and clever tile selection. -> 90 Seconds of Pure Strategy Short rounds mean you can play anytime — during breaks, while commuting, or when you want a quick brain refresher. -> Same Puzzle for Everyone You can compete with: Friends Family Colleagues Or thousands of global players Whether you’re trying to stay in the top 10 or surpass your previous high score, the competitive element keeps the game exciting and rewarding. -> Built for All Age Groups This is one of the rare games that’s enjoyable and beneficial for all ages: -> Kids – Improve basic math skills -> Students – Improve calculation speed -> Adults – Sharpen focus -> Seniors – Keep the brain active The more you play, the more your brain adapts — and soon you’ll find yourself solving sums faster than ever before.

Screenshots

Cube Cube3 screens
Sum Is4 screens

Verdict

The call

The clearest difference is in-app purchases: Sum Is at none against Cube Cube's 10. Cube Cube's advantage is update cadence (every 6 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Cube Cube sells 10 one-off in-app purchases. Sum Is asks for nothing beyond the download.

UpkeepUpdate frequency

Cube Cube ships an update every 6 weeks, Sum Is every 4 months. Both last shipped on September 22, 2026.

Scorecard2 real differences · 8 level
Cube Cube versus Sum Is: the parameters behind the verdict, then further details
ParameterCube CubeSum Is
PriceFreeFree
Rating4.6 (13K ratings) — better—
Positive reviews83.9% of reviews—
Number of ratings13K — better—
Update frequencyEvery 6 weeks — betterEvery 4 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationAd-supported—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.0 — better
Further details — not scored
Size215 MB43 MB
Age rating12+4+
DeveloperTether Studios, LLCVijay Kumar Meena

Bugs and requests

Cube Cube

Reported bugs

4 issues
  • App crashes during tournaments
  • Matches not starting or incorrectly aborting
  • Inconsistent performance and connectivity issues
  • Withdrawal and payment problems

Requested features

4 requests
  • More free/low-cost play options
  • Improved matchmaking and tournament systems
  • Better transparency around payouts and earnings
  • Enhanced customer support and communication

Sum Is

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Cube Cube

One-time10
  • 500 Coins$0.99
  • 5 Energy$0.99
  • Starter Pack$1.99
Show 7 more
  • No Ads 7-Days$2.99
  • Double Energy 30-days$4.99
  • 3,000 Coins$4.99
  • No Ads 30-Days$6.99
  • 50 Energy$8.99
  • 15,000 Coins$19.99
  • 45,000 Coins$49.99
None

Sum Is

No in-app purchases

Questions

Is Cube Cube free?
Cube Cube is free to download, with in-app purchases available.
Is Sum Is free?
Sum Is is free to download, with no in-app purchases.
Do Cube Cube or Sum Is have ads?
Both Cube Cube and Sum Is show ads.
Which is updated more often, Cube Cube or Sum Is?
Cube Cube ships an update every 6 weeks, and Sum Is every 4 months. Most recently, Cube Cube was updated on September 22, 2026 and Sum Is on September 22, 2026.

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