321 vs Watermelon
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.
Watermelon
Merge smaller celestial bodies to create larger planets and expand your solar system. Earn points by combining planets and aim for the highest score to climb the global leaderboard. Enjoy a unique space exploration and merging experience.
- Merge planets
- Explore solar system
- Earn points
- Climb leaderboard
- High score challenge
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Explore the solar system in a different way. Merge smaller planets to reach larger planet. Combining larger planets allows you to earn more points. Make the highest score and get to the top of the Leaderboard!
Screenshots
Verdict
The clearest difference is rating: Watermelon at 5.0 against 321's 4.2. Watermelon also leads on in-app purchases (none vs 2) and review sentiment (100% vs 66%). 321's advantage is ads (none vs shown) and ratings volume (32 vs 3). On price 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. 321 sells 2 one-off in-app purchases. Watermelon asks for nothing beyond the download.
Watermelon holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: 321 has 32 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 66% of 321's written reviews are positive against 100% of Watermelon's.
321 ships an update every 2 weeks, Watermelon every 2 days. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.
| Parameter | 321 | Watermelon |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (32 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 66.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 32 — better | 3 |
| Update frequency | Every 2 weeks | Every 2 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod |
| Requires iOS | 17.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 116 MB |
| Age rating | 4+ | 17+ |
| Developer | Antonio Jr | Davut Inat |
Customer experience
321
Watermelon
In-app purchases
321
- Extra shot$0.99
- Upgrade to Pro$4.99
Watermelon
No in-app purchases
