1/2 one vs 2P Online
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
1/2 one
Test your luck and strategy in this simple guessing game. Aim for consecutive correct answers with a 50/50 chance, and track your progress. You get one chance to redo a selection per streak.
- 50/50 guessing mechanic
- Consecutive correct answer tracking
- Single redo per streak
- Probability display
- Simple L/R choices
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Keep picking 1/2 and chase the odds that almost never happen! A simple game: how many times in a row can you call a 50/50 correctly? ■ How to play ・Pick one of two: "L" or "R" ・On a hit, the probability of your streak so far is shown (1/2 → 1/4 → 1/8 …) ・On a miss, the streak goes into RECORDS and you start over ・Once per streak you can watch an ad to redo your choice (the answer is drawn again). Redo can be switched ON / OFF ■ Records ・RECORDS: how many times you reached each streak, and your total runs ・HISTORY: the winning side of your last 13 picks ■ Version 2.0.0 (complete remake) ・Rebuilt from the ground up with a new design ・Added hit / miss effects and haptic feedback ・After a miss, your last streak stays readable ・Redo is only offered when an ad is ready ・Supports iPad and larger text sizes ・Your existing records carry over This app shows ads (banner, interstitial and rewarded). Terms of Use: https://www.gravass.co.jp/apps/terms/ Privacy Policy: https://www.gravass.co.jp/apps/privacy/
2P Online
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2 Player Online – Mini Games for You & Your Friends! Enjoy 2D top-down mini games in one app! Play together on a single device, or challenge friends online. You can even practice solo against AI! Game Modes Online: Real-time battle with friends Solo Play: Train your skills against AI 2P on One Device: Local match anytime, anywhere! Included Games Slide Soccer – Flick to score in this strategic mini soccer Tank Battle – One-touch tank showdown Mini Car Circuit – Cute but fast mini racing action Cannon Battle – Adjust your angle and power to strike! Duel Tank – Move and aim separately in this advanced tank war Pocket Ball – Simple, fun and addictive pool-style mini game Ping Pong Clash – Fast-paced classic ping pong Jump Tennis – One-tap jump tennis for quick matches Red Light, Green Light – Stop when watched! Move and you're out in this thrilling freeze game Memory Match – Watch, remember, and tap in order! A battle of brains and memory Gravity Run – Flip gravity and race to the finish! A thrilling twist action game Simple Controls, Deep Fun Offline & Online Support Perfect for family, friends, and quick matches!
Screenshots
Verdict
1/2 one and 2P Online are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
1/2 one ships an update every 2 months, 2P Online every 3 months. The most recent releases landed on October 2, 2026 and October 8, 2026 respectively.
| Parameter | 1/2 one | 2P Online |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.6 — better |
| Further details — not scored | ||
| Size | 49 MB | 97 MB |
| Age rating | 9+ | 4+ |
| Developer | gravass, Inc. | Sang Un Lee |
In-app purchases
1/2 one
No in-app purchases
2P Online
No in-app purchases









