Customer Reviews (500)

Coiners- • 2025-03-17T00:00:32-07:00

Cheap, has some nice quality of life features, and the UI is well thought out and works well on an iPad.

LancerNJ • 2025-03-13T04:27:59-07:00

The game does not have an "Erase" button which makes it very difficult to use. The user has to constantly toggle the notes icon on and off to switch between a note and a number.

Jhdbutdxee • 2025-02-23T16:46:44-07:00

This is a pretty good sudoku app. Appreciate the inventiveness of the developers in terms of some of the designs like double clicking on single candidate cells to enter the solution as well as visual enhancements like highlighting rows, columns of selected cells and remaining candidates if a solved cell is selected. Recommended improvements: 1. add a toggle for normal mode/notes mode such that normal mode stays on. If you recognize solutions for a series of cells that have multiple candidates, it’s clunky to have to hit the pencil button with each successive cell before entering a solution. 2. Generate “evil” puzzles that are more difficult. The gap between easy and evil is not that wide, while the gap between evil and diabolical is huge. 3. After a puzzle has been completed, allow the menu to go away after hitting Done or Cancel so we can admire it for a little while. Thanks. Appreciate the good work.

Summary of Key Insights

This Sudoku app enjoys a very positive overall sentiment, with a large majority of users awarding it 5 stars. Users appreciate its simplicity, lack of ads, offline functionality, and range of difficulty levels. Key strengths include a clean user interface, helpful features like notes and error highlighting, and a good balance between challenge and accessibility. However, some users find the note-taking functionality cumbersome, desire more customization options (themes, difficulty levels), and report occasional unsolvable puzzles. Recent changes to the dark mode theme have also caused dissatisfaction for some users. The overall rating is very high, suggesting a solid foundation for continued success.

Strengths:

  • Clean and intuitive interface
  • No ads
  • Offline functionality
  • Variety of difficulty levels
  • Helpful features (notes, error highlighting)
  • Good value for money

Weaknesses:

  • Cumbersome note-taking functionality
  • Limited customization options
  • Occasional unsolvable puzzles
  • Difficulty level gaps between "Evil" and "Diabolical," and sometimes between "Easy" and "Medium."
  • Recent dark mode implementation issues

Overall Sentiment: Highly Positive

Quantitative Metrics:

  • Overall Rating: Excellent (based on the review distribution)
  • Score Distribution:
    • 5-star: 85% (425/500)
    • 4-star: 8.2% (41/500)
    • 3-star: 2% (10/500)
    • 2-star: 1% (5/500)
    • 1-star: 3.8% (19/500)

Data & Methodology Overview

  • Data Sample Size: 500 reviews
  • Time Frame of Reviews: Not explicitly stated, but reviews appear to be a mix of recent and older feedback, spanning several years.
  • Analysis Methods:
    • Sentiment Analysis: Categorizing reviews as positive, negative, or neutral based on the language used.
    • Keyword Extraction: Identifying frequently used words and phrases related to features, issues, and user preferences.
    • Frequency Analysis: Counting the number of times specific issues or requests are mentioned.
    • Review Scoring: Analyzing star ratings to quantify overall satisfaction.

Key User Pain Points

  • Cumbersome Note-Taking: Many users find the note-taking process slow and requiring too many taps, especially the need to toggle between note and number entry modes.
    • Impact: Frustrates users, slows down gameplay, and makes advanced strategies less enjoyable.
  • Difficulty Level Imbalance: The jump in difficulty between "Evil" and "Diabolical" is too significant for some users. Additionally, the transition from "Easy" to "Medium" can also be jarring for beginners.
    • Impact: Limits accessibility for players of different skill levels and can lead to frustration.
  • Dark Mode Issues: Recent changes to the dark mode theme have made it too dark, obscuring grid lines and making the game difficult to play for some users. Lack of customization options for the theme is also a concern.
    • Impact: Reduces usability and accessibility for users who prefer dark mode.
  • Occasional Unsolvable Puzzles: Some users report encountering puzzles that cannot be solved due to errors in the puzzle generation algorithm.
    • Impact: Leads to wasted time and frustration.
  • Lack of an "Erase" Button: The absence of a dedicated erase button makes it difficult to quickly correct mistakes.
    • Impact: Slows down gameplay and increases frustration.
  • Highlighting Issues: Some users find the row and column highlighting distracting or wish for more control over this feature.
    • Impact: Visual distraction that negatively impacts user experience for some.

Frequently Requested Features

  • Toggle for Normal/Notes Mode: A dedicated toggle to switch between number and note entry, instead of repeatedly pressing the pencil icon.
  • Hints System: A hint system, especially for the "Diabolical" difficulty level, to help users when they get stuck.
  • Import Custom Puzzles: The ability to manually enter puzzles from newspapers or other sources.
  • Number Completion Cue: A visual cue (e.g., graying out) to indicate when all instances of a number have been placed on the board.
  • More Difficulty Levels: Additional difficulty levels to bridge the gap between "Evil" and "Diabolical."
  • Customizable Themes: More theme options, including a lighter dark mode or the ability to revert to the previous color scheme.
  • "Solved" Screen: Restore the "Solved!" screen after completing a puzzle to provide a sense of accomplishment.
  • Error Limit: An option to set a limit on mistakes made when mistake alerts are enabled.
  • Head-to-Head Mode: An option to compete against other players on the same puzzle in real-time.
  • Cloud Save/Account: Ability to restore progress after accidentally deleting the app, especially for paid users.
  • Average Solve Time Tracking: Track average solve times for various levels.

Strengths and Positive Aspects

  • Clean and Intuitive Interface: Many users praise the app's clean, simple, and user-friendly interface.
  • No Ads: The absence of ads is a major selling point and a source of satisfaction for users.
  • Offline Functionality: The ability to play offline is highly valued.
  • Variety of Difficulty Levels: The range of difficulty levels caters to players of all skill levels.
  • Helpful Features: Features like automatic notes, error highlighting, and undo/redo are appreciated.
  • Good Value for Money: Users feel the app is worth the price, especially for the ad-free experience.
  • Responsive Developers: Some users noted that the developers are responsive to feedback.
  • Brain Training: Many users appreciate the app as a tool for mental exercise and cognitive stimulation.
  • Long-term Usage: Many users report playing the game for years, indicating high levels of satisfaction and engagement.

Prioritized Action Recommendations

High Priority:

  1. Address Dark Mode Issues: Provide options to customize the dark mode theme, including brightness adjustments or the ability to revert to the previous color scheme. Impact: Directly addresses a recent and significant usability issue affecting a subset of users.
  2. Improve Note-Taking Functionality: Implement a toggle for switching between number and note entry modes. Consider a redesign of the note input method to reduce the number of taps required. Impact: Addresses a frequently cited pain point and significantly improves the user experience for advanced players.
  3. Rebalance Difficulty Levels: Adjust the difficulty levels to create a smoother progression, particularly between "Evil" and "Diabolical," and "Easy" and "Medium." Consider adding an additional difficulty level between "Evil" and "Diabolical." Impact: Improves accessibility and caters to a wider range of skill levels.
  4. Fix Unsolvable Puzzles: Investigate and fix the puzzle generation algorithm to eliminate unsolvable puzzles. Implement a "Report Puzzle" button to allow users to report potentially flawed puzzles. Impact: Prevents user frustration and maintains the integrity of the gameplay experience.

Medium Priority:

  1. Add an "Erase" Button: Include a dedicated "Erase" button for quickly clearing cells. Impact: Improves usability and reduces frustration when correcting mistakes.
  2. Implement a Hints System: Add a hint system, with adjustable levels of assistance, to help users when they get stuck. Impact: Improves accessibility for beginners and provides assistance on difficult puzzles.
  3. Restore "Solved" Screen: Reintroduce the "Solved!" screen after completing a puzzle. Impact: Enhances the sense of accomplishment and provides positive reinforcement.
  4. Refine Highlighting Feature: Provide options to customize or disable the row and column highlighting. Impact: Allows users to tailor the visual experience to their preferences.

Low Priority:

  1. Allow Custom Puzzle Input: Add the ability to manually enter puzzles from external sources. Impact: Caters to a niche audience of users who want to play specific puzzles.
  2. Implement Number Completion Cue: Add a visual cue to indicate when all instances of a number have been placed on the board. Impact: Provides a helpful visual aid for strategic gameplay.
  3. Develop Head-to-Head Mode: Implement a multiplayer mode where players can compete against each other on the same puzzle in real-time. Impact: Adds a social and competitive element to the game.
  4. Cloud Save/Account: Implement cloud save functionality to allow users to restore progress across devices or after accidental deletion. Impact: Improves user convenience and reduces frustration.
  5. Average Solve Time Tracking: Track average solve times for various levels. Impact: Adds a layer of statistics and personalization.

Opportunities for Startup Ideas

  • AI-Powered Sudoku Tutor: An app that not only provides Sudoku puzzles but also teaches users advanced solving techniques through interactive lessons and personalized feedback.
  • Sudoku Puzzle Marketplace: A platform where users can create, share, and rate custom Sudoku puzzles.
  • Social Sudoku Platform: A social network dedicated to Sudoku, where users can connect with other players, share strategies, and compete in tournaments.
  • Adaptive Difficulty Sudoku: An app that dynamically adjusts the difficulty of puzzles based on the user's skill level and performance.
  • Augmented Reality Sudoku: An app that allows users to solve Sudoku puzzles overlaid on real-world environments using augmented reality.

Trends and Observations

  • Long-Term User Loyalty: Many users have been playing the game for years, indicating a high level of satisfaction and loyalty.
  • Preference for Simplicity: Users consistently praise the app's clean interface and lack of unnecessary features, suggesting a preference for a straightforward and focused gameplay experience.
  • Importance of Customization: While users appreciate the simplicity, they also desire more customization options to tailor the game to their individual preferences (e.g., themes, difficulty levels, highlighting).
  • Value of Offline Play: The ability to play offline is a significant advantage and a key differentiator for the app.
  • Impact of Updates: Updates can have a significant impact on user sentiment, as evidenced by the negative feedback regarding the recent dark mode changes.

Conclusion

This Sudoku app is a well-regarded and highly rated product with a strong foundation. By addressing the identified pain points, implementing frequently requested features, and maintaining its focus on simplicity and usability, the app can further enhance its user experience and solidify its position as a leading Sudoku app. Prioritizing the dark mode issues and note-taking improvements will have the most immediate and positive impact on user satisfaction.

Original App Link

https://apps.apple.com/us/app/sudoku/id329981776?uo=2