CuBall vs KnotNum
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
CuBall
An endless puzzle game where you move a cube to collect balls in a line. Use power crystals and magic spells to overcome challenges. Compete with others globally and improve your focus and logical reasoning.
- Endless puzzle gameplay
- Cube movement and ball collection
- Power crystals and magic spells
- Global leaderboards
- Customizable color themes and music
- Logical reasoning development
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"CuBall" is an endless puzzle with an easy-to-understand and intuitive principle. How to play: - Move the cube and collect the balls in one line - Collect power crystals and use magic spells to find your way out of any situation - Compete with friends and players around the world and beat the record You can choose color themes and music to better suit your mood. Beautiful animations and a variety of effects will create a truly magical atmosphere. Captivating theme tunes created exclusively for "CuBall" will help you relax and fully immerse yourself in the game world. With this puzzle, you can sharpen your focus and develop your logical reasoning in a casual form.
KnotNum
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KnotNum is a number puzzle where you link neighbouring tiles into chains: add, subtract, multiply and divide your way to the target. No ads — none at all. No banners, no rewarded videos. Just you and the numbers. THREE MODES • Arcade — a campaign with endless progression: reach each level's goal chain by chain, earn stars for clearing levels, crack stones, and take on extra-tough challenge levels every 10th stage. • List — collect every number on the list before the clock runs out. • Timer — a race for the high score: every chain adds seconds, targets get harder with every tier. And your best goes straight to the Game Center leaderboard. DAILY PUZZLE A new puzzle every day, shared by all players, 10 stages long — the operation and target change with every move. Come back daily, solve the puzzle and collect your rewards. A BOARD THAT FIGHTS BACK Surprise tiles keep every round fresh: ×2 multipliers, a wild joker that can become any number, timer freezes, time bonuses and penalties. Watch out for the vortex — defuse it with a chain for a bonus, or it swallows the numbers around it. Some levels ban diagonal moves entirely, forcing you to think differently. FAIR BY DESIGN • The board is always solvable — no dead ends, ever. • On a losing streak? The game quietly grants bonus time or moves. • Hints, board shuffles and extra time — all of it can be bought with coins you earn just by playing. NO ADS, NO TRACKING We show no ads and collect no data. Progress lives on your device and the game works offline. Purchases are strictly optional: coin packs and a one-time Premium (coins ×2 forever). ALSO INSIDE • Achievements and stats — in-game and in Game Center • Daily login reward and a hint bank • Beautiful native design — full experience on both iPhone and iPad • Localised in English and Russian One chain and you're hooked. See for yourself.
Screenshots
Verdict
The clearest difference is update cadence: CuBall at every 2 days against KnotNum's every 2 weeks. CuBall also leads on iOS requirement (9.0 vs 18.0). On price, ads, in-app purchases and device support 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
Both are free to download. CuBall sells 2 one-off in-app purchases and KnotNum sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
CuBall ships an update every 2 days, KnotNum every 2 weeks. The most recent releases landed on October 13, 2026 and October 19, 2026 respectively.
| Parameter | CuBall | KnotNum |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 9.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 83 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Sergey Dubovitsky | Pavel Gagarin |
In-app purchases
CuBall
- 2000 Gems$0.99
- 15000 Gems$4.99
KnotNum
- 200 Coins$0.99
- Premium$0.99
- 700 Coins$2.99
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- 1800 Coins$5.99








