321 vs KaruQ
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
321
This physics puzzle game challenges players to make precise angle adjustments to achieve perfect passes and high scores. It offers a maddeningly addictive experience that requires mathematical engineering for optimal gameplay.
- Physics-based puzzles
- Angle adjustment mechanics
- High score challenges
- Mathematical engineering gameplay
- Maddeningly addictive
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321 promises glorious battles, dazzling strategies, and hyper-realistic action, which is entirely true, assuming you consider calculating geometry an explosive combat sport. In reality, it’s a beautifully maddening physics puzzle that forces you to obsess over microscopic angle adjustments to land completely impossible passes. You will play it once, you will play it forty times, and you will absolutely lose your mind trying to mathematically engineer the perfect high score.
KaruQ
Engage in a unique math puzzle game where you defeat ghosts by matching numbers with flames. Merge, split, and add to flames to create the correct calculations. Explore over 190 puzzles, daily challenges, and a creative mode to build and share your own levels.
- Defeat ghosts with numerical flames
- Merge and split flames for calculations
- Over 190 unique puzzles
- Daily challenge mode
- Puzzle creation and sharing
- QR code puzzle scanning
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- Defeat the Ghosts with Calculations Ghosts with numbers will appear on the screen. You can defeat a ghost by hitting it with a flame that has the same number. Flames can be merged and split. Merging multiplies the numbers, and splitting divides them, allowing you to create various numbers. You can also add 1 to a flame using a matchstick. Use these actions to defeat the ghosts! - This game includes: Over 190 different puzzles A challenging "Daily Puzzle" mode with one new problem each day A "Puzzle Creation" mode (Create your own puzzles and share them with other players.) QR code scanning (Scan puzzles made by others or generate puzzles automatically from QR codes.) Four different graphic themes
Screenshots
Verdict
The clearest difference is price: 321 at Free against KaruQ's $1.99. 321 also leads on update cadence (every 2 weeks vs every 3 months). KaruQ's advantage is rating (4.9 vs 4.2) and in-app purchases (none vs 2). On ratings volume, ads 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
321 is free to download; KaruQ costs $1.99 up front. 321 sells 2 one-off in-app purchases. KaruQ asks for nothing beyond the download.
KaruQ holds the better App Store score, 4.9 against 4.2. Both are backed by a comparable volume of ratings — 32 and 63 respectively. Written reviews point the same way: 66% of 321's written reviews are positive against 91% of KaruQ's.
321 ships an update every 2 weeks, KaruQ every 3 months. The most recent releases landed on November 11, 2026 and November 8, 2026 respectively.
| Parameter | 321 | KaruQ |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.2 (32 ratings) | 4.9 (63 ratings) — better |
| Positive reviews | 66.0% of reviews | 90.9% of reviews — better |
| Number of ratings | 32 | 63 — better |
| Update frequency | Every 2 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod |
| Requires iOS | 17.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 82 MB |
| Age rating | 4+ | 9+ |
| Developer | Antonio Jr | Ryuji Kuwaki |
Customer experience
321
KaruQ
In-app purchases
321
- Extra shot$0.99
- Upgrade to Pro$4.99
KaruQ
No in-app purchases
