STutor vs Fireworks Sudoku

STutor (for SUDOKU TUTOR) is a no-nonsense sudoku solving APP that can display three level of hints while you are solving a puzzle. There are no AD's; no "in-APP-purchases". Just a program to help you advance your Sudoku solving skills. STUTOR solves puzzles using 5 strategies following a logical sequence of methods. The sequence and methods are described in five (5) HELP screens. STUTOR is most appreciated when it displays clues for solving those pesky Friday/Saturday more advanced puzzles. No more disappointing unsolved puzzles. Puzzles are entered manually in a Sudoku grid or by entering (or pasting) an 81 character string. Puzzles can be saved, recalled, changed, deleted, and reordered in the Archive. Upon pressing any of the bottom buttons (except clr), STUTOR will validate and solve the puzzle. Any subsequent user entries will be compared with the solution. A valid entry is entered into the puzzle. If the entry does not correspond to the solution, all the "possibles" or minis are displayed for that cell. If minis are already displayed, the entered number is removed from the minis. Swiping more that two cells in a row will display minis in the row. Ditto for a column or a group. Swiping through more than two rows, columns or groups will display all minis. The "hint" button toggles between a text only hint and one that also displays a clue on the puzzle. The STEP button displays all hint details and alters the puzzle accordingly.

Fireworks Sudoku is a free puzzle game with over 25,000 boards that streamlines Sudoku to make it more fun and less work. Cascading fireworks celebrate your progress and your satisfaction will be sky high! By automatically filling in single remaining notes in the current row, column or region the fireworks can cascade throughout the board which rewards your earlier work (this can be disabled if you wish). This free and fully offline Sudoku puzzle game has many features to make solving logic puzzles more enjoyable and rewarding, including unlimited hints, duplicate highlighting and automatic removal of notes. Many settings allow you to tailor the game to suit you perfectly. Fireworks Sudoku contains over 25,000 classic 9 x 9 Sudoku boards. Every board only has one solution. There are 7 difficulty levels with hints from Beginner to Expert, and also a hardcore mode with hints disabled. Exercise your brain and logical thinking with the perfect difficulty level for you now and increase the challenge later if you wish. The entire app is offline and free. Free and unlimited hints help you learn and keep you solving. Hints can teach you more advanced strategies and explain the logic. By default you are shown a vague hint first (can be disabled) showing you the cells you should look at, and then if you choose you can see the detailed hint which explains why the action can be taken. You can choose to have the game apply the hint action or do it yourself. Learn how to become a Sudoku puzzle master! Features: • Unique fun cascade feature with fireworks which celebrates your progress and rewards your earlier elimination work • Fireworks Sudoku can prevent mistakes and highlight the conflict (can be disabled) • Entering numbers and notes is fast, easy and more intuitive than most Sudoku games • Help pages teach you how to play Sudoku and how to enter numbers and notes in the game • Notes are easier to use than on paper as they are automatically removed when you enter numbers • Button to automatically enter all notes if you wish • Manually removing notes is a one tap action • Both entered numbers and notes of the current number are highlighted for easy visibility • Free and unlimited hints help you out so you're never stuck • Vague hints are given first to show you which part of the board to look at next (can be disabled) • Multiple undo's allow you to roll back the game if you made a mistake • The game automatically saves so you never lose any progress • This Sudoku puzzle game will quickly resume where you left off • You can optionally enable highlighting of all rows, columns and regions covered by the current number Highlights: • More than 25,000 Sudoku number puzzle games each with a single solution • Intuitive and fast number and notes input • Fully offline • Free • Classic Sudoku 9 x 9 grid • Designed for iPhones and iPads • Elegant and intuitive design