103+ iOS apps & games curated and reviewed
Out of 103+ diagonal apps and games 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.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (134) | Yes | No | Aug 2026 |
| 2 |  | Free | — | No | No | Jun 2026 |
| 3 |  | Free | 5.0★ (2) | No | No | May 2026 |
| 4 |  | Free | 4.6★ (242) | No | Yes | Aug 2026 |
| 5 |  | Free | — | No | No | May 2026 |
| 6 |  | Free | 4.2★ (57) | Yes | Yes | Aug 2026 |
| 7 |  | Free | 4.7★ (3) | No | Yes | Jul 2026 |
| 8 |  | Free | 4.8★ (20) | Yes | No | May 2026 |
Easily calculate lengths, angles, and areas of various geometric shapes. Input known values and instantly get precise results for a wide range of 2D and 3D figures. Ideal for students and engineers needing quick geometric computations.
Calculate side lengths, angles, area, and perimeter of right-angle triangles. Visualizes the triangle with adjustable precision and offers options to rotate, flip, and customize themes. Reuses previous entries for efficiency.
Easily calculate any side of a right-angled triangle using the Pythagorean theorem. Input two sides to find the third, with all calculations saved in a history. Supports fractions and offers an ad-free option.
A logic puzzle game where you fill in missing numbers sequentially. Solve puzzles by connecting numbers horizontally, vertically, or diagonally across various difficulty levels. Features include hints, auto-save, and time tracking.
This fitness platform helps you track daily activities, body metrics, and progress. It offers over 2000 exercises with 3D demonstrations, preset and custom workouts, and motivational badges. Sync workouts from online or Apple Health for a comprehensive fitness journey.
Engage in a strategic board game similar to Connect Four, but with a unique 45-degree rotated board. Challenge a computer opponent, play with a friend on the same device, or compete in online ranked matches.
Solve logic puzzles by filling cells with diagonal lines, connecting corners, and satisfying numbered hints. Enjoy 900 handcrafted puzzles and a daily challenge with offline play and smart hints.
This logic puzzle game introduces a new rule to classic Sudoku: main diagonals must also contain numbers 1-9 without repetition. It offers daily challenges, four difficulty levels, and smart features to enhance gameplay. An optional premium upgrade provides unlimited hints, ad-free play, and exclusive content.
Engage your mind with a variety of Sudoku puzzles, including classic and unique variations like Diagonal, Irregular, and OddEven. Offers a no-ads experience with features to aid gameplay and track progress. Perfect for logic puzzle enthusiasts seeking a mental challenge.
This app visualizes and explains complex 3D geometry concepts, including linear and quadric structures and their intersections. It offers interactive 3D graphs and step-by-step calculation algorithms for a deeper understanding of mathematical principles.
This app offers vector and pixel art editors with tools for free drawing, shapes, and function plotting. It allows for linear transformations of images using matrices, eigenvalues, and rotations, alongside pixel image compression.