O vs X Duel vs SynapTap
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
O vs X Duel
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---- Classic TicTacToe has evolved! ---- Face-to-face battle | Smart computer challenge Play TicTacToe with friends anytime, anywhere, and kill time easily! Challenge two computer opponents of different difficulty levels to test your strategy and wisdom. Can you beat the computer in hard mode? ---- Game Features ---- Classic Mode â– Play against friends on the same machine to relive the fun of childhood! â– Or choose a computer opponent and challenge it alone anytime, anywhere. Endless Mode â– Both sides can only place up to 3 O or X. â– Starting from the 4th, the oldest piece will automatically disappear! â– The strongest strategy and tactics are required to challenge the limits of your brainpower! Obstacle Mode â– At the beginning of the game, you cannot place chess pieces on a random grid, which adds variables and challenges! â– Other rules are the same as the endless mode, which tests your ability to respond on the spot. Download now and start the brain showdown! Whether you are playing with friends or playing against the computer, it can bring you unlimited fun and challenges. Come and experience the new gameplay!
SynapTap
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SynapTap – Test Your Focus, Reflexes & Brainpower! Keep your eyes peeled, think fast, and react at the perfect moment! SynapTap is a fast-paced collection of casual mini-games designed to test your focus, timing, reflexes, and puzzle-solving skills. Whether you are looking for a quick challenge or chasing a new high score, this offline arcade experience has something for you. Find hidden objects before time runs out, merge bizarre creatures, solve number challenges, build balanced towers, and master precision-based levels. Every mode offers a unique challenge that puts your attention, speed, and timing to the test. Easy to play but difficult to master, SynapTap is perfect for both quick gaming sessions and high-score runs. Key Features Multiple Game Modes: 
Enjoy a variety of challenges based on focus, timing, numbers, merging, balance, and precision. Play Completely Offline: 
No Wi-Fi or mobile data required. Enjoy every mini-game wherever and whenever you like. Fast & Simple Controls:
 Jump straight into the action with easy one-touch controls. Focus & Reflex Challenges:
 Stay alert, react quickly, spot hidden items, and beat your high scores. Progress Through the Ranks: Improve your skills, earn new ranks, and work your way toward the ultimate master rank! Increasing Difficulty:
 Challenges become faster and more demanding as you progress. Lightweight & Optimized:
 Designed for smooth performance without taking up too much storage space on your device. Can you master every challenge and set a new high score? Download SynapTap now and put your focus, speed, and timing to the ultimate test!
Screenshots
Verdict
The clearest difference is iOS requirement: O vs X Duel at 13.0 against SynapTap's 15.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.
| Parameter | O vs X Duel | SynapTap |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly | Weekly |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 115 MB | 128 MB |
| Age rating | 4+ | 4+ |
| Developer | Cheng-Kai Wu | Emirhan Gireniz |
In-app purchases
O vs X Duel
No in-app purchases
SynapTap
No in-app purchases









