Best Difficult Puzzle App

0+ iOS apps & games curated and reviewed

4.6 avg rating
20 free apps & games
Updated June 2026

With an average user rating of 4.6★, the difficult puzzle app category is one of the App Store's strongest. Browse all 0+ apps and games we track, sorted so the most loved ones surface first.

Compare top Difficult Puzzle App (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Brain It On!Brain It On!Free4.5★ (5.1K)YesYesAug 2026
2Zen Word® - Relax Puzzle GameZen Word® - Relax Puzzle GameFree4.9★ (468K)YesYesAug 2026
3Tri Blocks | Slide Puzzle GameTri Blocks | Slide Puzzle GameFree4.7★ (131)YesYesJul 2026
4Frustrating Puzzle GameFrustrating Puzzle GameFree4.6★ (6.6K)YesYesAug 2026
5Amaze GO!Amaze GO!Free4.6★ (173K)YesNoAug 2026
6Slide puzzle: unblock it on!Slide puzzle: unblock it on!Free4.2★ (220)NoNoAug 2026
7Nuts & Bolts 3D: Screw PuzzleNuts & Bolts 3D: Screw PuzzleFree4.8★ (3.6K)NoYesAug 2026
8WordsSoup - Word Search PuzzleWordsSoup - Word Search PuzzleFree4.8★ (22K)YesYesAug 2026

Top Picks for Difficult Puzzle App

Brain It On!#1

Brain It On! by Orbital Nine Games Inc

Challenging Physics Puzzles
Editor's Choice
🎮 Games
4.5😊(5.1K ratings)
FreeAdsIn-App Purchases
Brain It On! screenshot 1
Brain It On! screenshot 2
Brain It On! screenshot 3
Brain It On! screenshot 4
Brain It On! screenshot 5

Engage your mind with tricky physics puzzles. Draw shapes to find creative solutions to increasingly difficult challenges. Compete with friends and discover multiple ways to solve each puzzle.

What We Love

  • 🚀 Challenging and fun
  • 🔒 No ads
  • 👍 Engaging physics-based puzzles
  • 👍 Encourages creative thinking

Room to Improve

  • 🐛 Drawing accuracy issues
  • 🐛 Glitches and crashes
  • 🐛 Difficulty spikes too quickly
Zen Word® - Relax Puzzle Game#2

Zen Word® - Relax Puzzle Game by Oakever Games

Relaxing Word Puzzle Game
Strong Contender
🎮 Games
4.9😐(468K ratings)
FreeAdsIn-App Purchases
#3in Games
Zen Word® - Relax Puzzle Game screenshot 1
Zen Word® - Relax Puzzle Game screenshot 2
Zen Word® - Relax Puzzle Game screenshot 3
Zen Word® - Relax Puzzle Game screenshot 4
Zen Word® - Relax Puzzle Game screenshot 5
Zen Word® - Relax Puzzle Game screenshot 6

This challenging word puzzle game sharpens your mind by requiring you to find hidden words without hints. Enjoy a relaxing experience with calming backgrounds and music, free from time limits or competition.

What We Love

  • 🧠 Challenging and mentally stimulating
  • 🎨 Beautiful visuals and calming music
  • 🧘‍♀️ Relaxing and zen-like experience
  • 🧠 Helps improve vocabulary and spelling

Room to Improve

  • 🤖 Excessive and intrusive ads
  • 🤑 Misleading advertising about no ads
  • 🤔 Repetitive and easy word puzzles
Tri Blocks | Slide Puzzle Game#3

Tri Blocks | Slide Puzzle Game by Loyal Foundry, Inc.

Slide, Solve, Succeed!
Worth Considering
🎮 Games
4.7(131 ratings)
FreeAdsIn-App Purchases
Tri Blocks | Slide Puzzle Game screenshot 1
Tri Blocks | Slide Puzzle Game screenshot 2
Tri Blocks | Slide Puzzle Game screenshot 3
Tri Blocks | Slide Puzzle Game screenshot 4
Tri Blocks | Slide Puzzle Game screenshot 5
Tri Blocks | Slide Puzzle Game screenshot 6

Engage your mind with a unique monochromatic sliding puzzle game. Solve hundreds of challenging triangular block puzzles with no time limits. Offers hints and new levels regularly to keep your brain sharp and relieve stress.

More Difficult Puzzle App apps to explore

4
Frustrating Puzzle Game
Frustrating Puzzle Game
Frustrating Puzzle Game
Tricky Puzzles, Endless Fun
Free

Engage in challenging puzzles with a mystery narrative. Solve unique scenarios requiring creative thinking and discover surprises. A hint system is available to aid progression, offering a blend of frustration and fun.

Challenging puzzlesMystery storytellingCreative thinking required
🎬 Entertainment
(6.6K)
free with in-app purchases
5
Amaze GO!
Amaze GO!
Amaze GO!
Help Arrows Escape!
Free

Guide arrows to escape a grid without collisions in this minimalist puzzle game. It offers a calming experience with simple rules, deep strategy, and no timers or pressure. Perfect for brain training and stress relief.

Minimalist arrows puzzle escapeCalm play loopSmooth tap controls
🎮 Games
(173K)
free with in-app purchases
6
Slide puzzle: unblock it on!
Slide puzzle: unblock it on!
Slide puzzle: unblock it on!
Best Brain training game!
Free

This game challenges your strategic thinking with increasingly difficult sliding block puzzles. Sharpen problem-solving skills with vibrant graphics and intuitive controls. Free hints are available to help you overcome obstacles and conquer every level.

Strategic puzzle solvingBrain training exercisesVibrant graphics
🎮 Games
(220)
free
7
Nuts & Bolts 3D: Screw Puzzle
Nuts & Bolts 3D: Screw Puzzle
Nuts & Bolts 3D: Screw Puzzle
Solve endless unscrew puzzle
Free

Engage your mind with a challenging screw puzzle game. Unscrew bolts to free blocks and solve intricate levels. Customize your nuts and bolts with various skins. Test your IQ and creativity.

Unscrew bolts to free blocks100+ difficulty levelsHint system for tricky puzzles
🎮 Games
(3.6K)
free with in-app purchases
8
WordsSoup - Word Search Puzzle
WordsSoup - Word Search Puzzle
WordsSoup - Word Search Puzzle
With solutions and word lists
Free

Engage in an endless word search experience with dynamically generated puzzles. Choose from a vast array of word lists or create your own. Enjoy customizable difficulty, multiple puzzle sizes, and various play modes.

Infinite generated puzzlesExtensive word listsCustomizable difficulty
🎮 Games
(22K)
free with in-app purchases
9
Math Puzzle Games - Crossmath®
Math Puzzle Games - Crossmath®
Math Puzzle Games - Crossmath®
Brain Game & Logic Puzzles
Free

Engage your mind with a challenging math puzzle game. Solve problems using basic arithmetic operations and logic to progress through various difficulty levels. Offers daily challenges and an endless mode for continuous brain training.

Addition, subtraction, multiplication, division puzzlesOrder of operations (multiplication/division first)Multiple difficulty levels (Easy to Expert)
🎮 Games
(254K)
free with in-app purchases
10
Flow Free
Flow Free
Flow Free
Fun and Relaxing Brain Puzzle
Free

Connect matching colored pipes to fill the board without crossing or overlapping. Enjoy hundreds of free levels or challenge yourself in timed modes. This addictive puzzle game offers a relaxing yet engaging experience for all skill levels.

Connect matching colors with pipesFill the entire boardOver 2,500 free levels
🎮 Games
(401K)
free with in-app purchases
11
Fit It 3D - Tangram Puzzle
Fit It 3D - Tangram Puzzle
Fit It 3D - Tangram Puzzle
Spin shapes & solve the puzzle
Free

Engage your logic and imagination with a geometric puzzle game. Rotate and arrange diverse shapes to form designated images, progressing through numerous levels designed to challenge even experienced puzzle enthusiasts. It's a captivating experience for those who enjoy brain teasers and shape-based challenges.

Geometric shape rotation and arrangementVast number of levelsLogic and imagination challenges
🎮 Games
(117K)
free with in-app purchases
12
Word Search Colorful
Word Search Colorful
Word Search Colorful
Daily Word Search Puzzle Game
Free

Engage in a daily word search puzzle game to find hidden words. Improve vocabulary, spelling, and puzzle skills with various modes, difficulty levels, and categories. Enjoy challenges, multiplayer options, and helpful hints.

Unlimited word puzzles8 different game modesMultiplayer game option
🎮 Games
(9.4K)
free with in-app purchases
13
Block Master:Block Puzzle Game
Block Master:Block Puzzle Game
Block Master:Block Puzzle Game
Classic Logic Challenge
Free

This game offers a relaxing yet challenging puzzle experience by placing toy blocks into a grid. It combines traditional block puzzle mechanics with a Sudoku-like interface for a fresh challenge. Enjoy brain-exercising gameplay offline, with no time limits.

Toy block style designSudoku grid integrationRelaxing gameplay
🎮 Games
(627)
ad-supported
14
Super Jigsaw - HD Puzzle Games
Super Jigsaw - HD Puzzle Games
Super Jigsaw - HD Puzzle Games
Daily HD Jigsaw Puzzle Games
Free

Engage your mind with a vast collection of high-definition jigsaw puzzles. Enjoy daily new challenges, customizable difficulty levels, and helpful tools to enhance your puzzle-solving experience. Perfect for adults seeking brain exercise and a relaxing pastime.

Extensive HD puzzle libraryDaily new puzzlesCustomizable difficulty
🎬 Entertainment
(19K)
free with in-app purchases
15
Sudoku· Classic Puzzle Games
Sudoku· Classic Puzzle Games
Sudoku· Classic Puzzle Games
Logic Puzzle Math Number Games
Free

This app offers a comprehensive Sudoku experience with thousands of puzzles across multiple difficulty levels. It includes features like hints, step-by-step help, customizable gameplay, and offline play. Track your progress, unlock achievements, and explore classic and modern Sudoku variations.

Unlimited Sudoku puzzlesDaily Sudoku challengesHints and step-by-step help
🎮 Games
(63K)
free with in-app purchases
16
Trigon : Triangle Block Puzzle
Trigon : Triangle Block Puzzle
Trigon : Triangle Block Puzzle
Make them fit in hexa board
Free

This brain teaser puzzle game challenges your logic and strategic thinking. Combine triangle blocks to clear lines on a triangular board, earning rewards for clearing multiple lines simultaneously. Enjoy a visually appealing experience with special themes and sound effects.

Triangle block puzzle gameplayClear lines to scoreEarn diamonds for multiple line clears
🎮 Games
(10K)
free with in-app purchases
17
Woody Puzzle: Slide Out
Woody Puzzle: Slide Out
Woody Puzzle: Slide Out
Solve brain-teasing puzzles
Free

Slide wooden blocks to their correct color zones to clear the board and reveal beautiful scenes from the USA. This brain-teasing puzzle game offers hundreds of levels with realistic mechanics and strategic gameplay.

Slide blocks to color zonesClear the boardUnlock USA scenes
🎮 Games
(1.1K)
free with in-app purchases
18
Cube Busters
Cube Busters
Cube Busters
Block Puzzle Brain Game
Free

Engage in a classic block puzzle experience with a charming twist. Place colorful cubes to clear rows and columns while a friendly character offers encouragement. Enjoy daily challenges, social competition, and offline play.

Animated characters with personalityClan and ranking systemOffline play supported
🎮 Games
(14K)
free with in-app purchases
19
POLY ART: Coloring Puzzle Game
POLY ART: Coloring Puzzle Game
POLY ART: Coloring Puzzle Game
Polygon Puzzle & Color Artbook
Free

Arrange polygonal puzzle pieces to create vibrant images in this brain-training game. It offers an anti-stress activity with a wide variety of colorful puzzles that are regularly updated.

Arrange polygonal puzzle piecesCreate fantastic imagesBrain training activity
🎮 Games
(24K)
free with in-app purchases
20
15 Puzzle
15 Puzzle
15 Puzzle
by gandreas software
Free

Engage your mind with this classic tile-sliding puzzle. Arrange numbered tiles or custom images into the correct order across various grid sizes. Features include row/column pushes and helpful hints.

Multiple grid sizesNumbered tilesCustom image puzzles
🎮 Games
(4.9K)
free

FAQ about Difficult Puzzle App

What is the best difficult puzzle app for iPhone?
Brain It On! tops our difficult puzzle app ranking as of June 2026, with a 4.5-star average from 5.1K App Store ratings, and it's free to download.
Yes — 20 of the top difficult puzzle app we rank are free to download, including Brain It On! and Zen Word® - Relax Puzzle Game.
Brain It On! shows ads and offers in-app purchases, according to its App Store listing as of June 2026.
Brain It On! is a game that challenges players to solve physics puzzles by drawing shapes. The puzzles are designed to be deceptively difficult, requiring creative thinking and an understanding of basic physics principles to find solutions.
The game offers dozens of brain-busting puzzles with more being added over time. Players can compete with friends, discover multiple ways to solve each puzzle, and share their unique solutions with others.