Test your observation skills by finding the unique image among a set of similar ones. Race against the clock to complete each challenge and discover all the hidden differences.



231+ iOS apps & games curated and reviewed
Out of 231+ odd one out puzzle apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.



Test your observation skills by finding the unique image among a set of similar ones. Race against the clock to complete each challenge and discover all the hidden differences.



Test your observation skills by finding the unique icon among a collection of similar images. This game offers a vast library of icons to challenge your perception. Enjoy an ad-free experience as you play.






Engage your brain with this free word puzzle game. Spot the odd letter or difference between images across hundreds of levels. It's an addictive and fun way to sharpen your logic and observation skills, playable offline.


Test your observation and problem-solving skills with this picture trivia game. Find the one photo that doesn't belong with the other three in a variety of challenging puzzles. It's a fun way to exercise your brain and improve focus for all ages.


Engage your mind with a creative and surprising brain-teasing game. Spot illogical elements and hidden oddities in imaginative scenes. Discover funny references and challenge your observation skills across diverse difficulty levels.


Challenge your observation skills by finding the unique item among a set of similar objects. With numerous themes and levels, the game offers a fresh experience each time. Compete with others on leaderboards or play at your own pace.


This game offers a relaxing, no-timer puzzle experience focused on color-matching and logic. Players move colored holes to match and drop marbles, solving hundreds of handcrafted levels at their own pace without any pay-to-win mechanics.


A minimalist puzzle game where players remove arrows in the correct order and angle to clear a grid. Deep strategy is hidden behind simple rules, offering a challenging yet relaxing brain teaser with thousands of handcrafted levels and a daily challenge.


Engage your mind with a clever puzzle game where you strategically move colored blocks to fill pipes. Solve increasingly difficult levels by ensuring all blocks are filled with water to progress.


Merge colorful numbered hexagons to reach the ultimate goal of seven. Strategically combine three of the same numbers to increase their value, and watch out for powerful bombs when sevens merge. Enjoy this addictive puzzle game with no time limits and offline play.


Control a ravenous black hole that must consume all food items in a level. Progress by eating smaller items first to grow larger and tackle bigger challenges. This addictive arcade puzzle game offers mind-bending logic challenges.


Engage in a humorous and imaginative puzzle-solving adventure with unconventional logic and unexpected twists. This sequel offers a richer experience with quirky plot lines and interactive elements, requiring creative thinking and wit to overcome bizarre challenges. Enjoy simple controls and unlimited hints to spark new ideas.


This classic math puzzle game challenges you to arrange numbered blocks in order by sliding them into an empty space. It tests your logic and reaction speed with multiple difficulty levels and board sizes. Enjoy this brain-training game offline, anytime, anywhere.


Engage your mind with a relaxing number block puzzle game. Drag and tap blocks to arrange them in order, offering a simple yet challenging experience for all ages. Enjoy beautiful backgrounds and various block materials.


Engage in a mind-bending puzzle game where you must think creatively to solve everyday challenges. Overcome unexpected problems with clever solutions and train your brain while enjoying a story-driven experience.


Engage in an addictive puzzle game where you must find the single different item among a collection. With various difficulty levels and numerous stages, it offers a fun and visually appealing challenge for all players.




Solve challenging logic puzzles by tapping arrows in the correct sequence to clear the grid. Plan your moves carefully to avoid mistakes and enjoy smooth animations and crisp visuals. This game offers a satisfying brain break with its intuitive controls and offline play.


Engage your mind with a unique puzzle game where you must draw intricate shapes using a single, continuous line. Avoid lifting your finger and ensure no lines overlap to successfully complete each progressively challenging level. This game offers a fun way to enhance problem-solving abilities and cognitive sharpness.


Engage in a hilarious and mind-bending logic puzzle game filled with outrageous drama and unexpected twists. Solve mysteries by finding clues, analyzing suspects, and exposing the truth in unconventional ways. This game challenges your logic and sense of humor.