--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Sudoku - Classic Sudoku Puzzle" developer_entity: "Guru Puzzle Game" bundle_id: "sudoku.puzzle.free.game.brain" app_store_id: "1492978794" category: "Puzzle" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: true market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-04-07" report_date: "2026-04-07" report_version: "5.4.0" total_reviews: 644137 overall_rating: 4.77 sentiment: "Mixed" sentiment_score: 48 confidence: "high" confidence_score: 0.95 data_age_days: 76 intelligence_version: 3 nemesis: "Sudoku.com - Number Games" competitor_count: 11 tags: ["puzzle", "freemium", "mixed sentiment", "mobile app", "app review", "app analysis", "casual", "gamers", "puzzle"] canonical_url: "https://marlvel.ai/intel-report/puzzle/sudoku-classic-sudoku-puzzle-1" license: "CC-BY-NC 4.0" last_verified: "2026-04-17T05:35:10.370Z" --- # Sudoku - Classic Sudoku Puzzle App Audit > **TL;DR:** Sudoku - Classic Sudoku Puzzle is a puzzle app by Guru Puzzle Game, rated 4.77/5 by 644,137 users, with Mixed user sentiment (48/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** Sudoku - Classic Sudoku Puzzle shows Mixed sentiment (4.77/5 from 644,137 reviews) — users praise engaging gameplay but report issues with intrusive advertising. ## Metadata & Market Performance - **Publisher:** Guru Puzzle Game - **Category:** Puzzle - **Target Audience:** Casual gamers and puzzle enthusiasts of all skill levels, from beginners looking for mental stimulation to experts seeking challenging logic puzzles. - **Platforms:** iOS & Android - **Version Audited:** 5.4.0 - **Audit Date:** 2026-04-07 - **Signal Count:** 150 reviews analyzed - **Confidence:** High (0.95/1.0) - **App Store ID (iOS):** 1492978794 - **Bundle ID:** sudoku.puzzle.free.game.brain - **Google Play ID:** sudoku.puzzle.free.game.brain - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-04-07 - **Short Description:** Classic Sudoku Puzzles. A No WiFi number game. Play OFFLINE to train your brain! ## Executive Snapshot Sudoku - Classic Sudoku Puzzle by Guru Puzzle Game is a leading mobile puzzle app focused on brain training and daily logic challenges. It maintains a massive global footprint with over 640,000 ratings, leveraging a freemium, ad-supported model. While the app excels in core gameplay mechanics and offline accessibility, it faces significant headwinds due to aggressive and technically flawed advertising implementation that has resulted in mixed user sentiment. ## App DNA (Features & Intent) - **[Standard] Note Mode:** Allows users to take notes within cells, with automatic updates as numbers are filled in. - **[Differentiator] Number-first Input:** Tap and hold a number to lock it for rapid entry into multiple cells. - **[Standard] Auto-Check & Mistake Management:** Real-time error detection with customizable mistake limits and an eraser tool. * *User Intent:* Users value self-expression and personalized experiences. - **[Standard] Daily Challenges:** New puzzles released daily with a trophy collection system to encourage retention. * *User Intent:* Users are motivated by consistent progression and daily incentives. - **[Standard] Offline Play:** Full functionality available without an internet connection. * *User Intent:* Users want uninterrupted access without internet dependency. - **[Basic] Dark Theme:** Visual mode optimized for low-light environments and bedtime usage. * *User Intent:* Users value self-expression and personalized experiences. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free version supported by ads, Potential in-app purchases for hints or ad removal - **Analysis:** The app follows a high-volume, ad-supported model typical of casual puzzle games, focusing on accessibility and daily engagement to maximize ad impressions. ## 🟡 User Sentiment (High Confidence: 644,137 reviews) {#user-sentiment} - **Overall Rating:** 4.77/5 - **Platform Split:** iOS 4.9/5 (80,272 ratings) | Android 4.8/5 (563,865 ratings) - **Overall Sentiment:** Mixed ### Top Praises - **Engaging Gameplay** | *Evidence:* "Great way to wind down" - **Beginner Friendly** | *Evidence:* "it even tells you how to play before you start, so it is beginner friendly" ### Top Complaints (Impact Areas) - **Intrusive Advertising** | *Evidence:* "ridiculous amount of adverts. and they're those stupid adverts that you have to play before you can move on" - **Misleading 'No Ads' Claims** | *Evidence:* "Says no ads...after very 1st game...ad pops up!" - **Broken Ad Experience** | *Evidence:* "ads sometimes don’t allow you to get back to the game. It’s unplayable." ## SWOT Analysis **Core Strengths:** - Massive user base with high overall ratings (4.7+) - Unique 'Number-first input' UX differentiator - Strong offline capabilities and high content update frequency - Effective daily challenge and trophy retention system **Critical Frictions:** - Aggressive and intrusive ad frequency - Technical bugs in ad dismissal forcing app restarts - Misleading marketing regarding 'ad-free' status - Lack of social media presence for user community engagement **Growth Levers:** - Conversion of free users to a premium ad-free tier - Expansion into adjacent logic puzzle sub-genres (e.g., Killer Sudoku) - Deepening the 'mental health' positioning through wellness tracking features - Improving ad-tech stack to prevent 'unplayable' states **Market Threats:** - Market dominance of Easybrain (Sudoku.com) - User migration to cleaner experiences like NYT Games - Potential platform penalties for misleading ad-free claims - Rising competition from new entrants with modern UIs ## What's Changed (v2 → v3) {#recent-changes} The app's competitive position is under pressure due to worsening user sentiment regarding intrusive and broken advertising, alongside increased visibility of direct market competitors. - **[HIGH]** **[Declined] Escalation of Ad-Related Complaints:** New, specific complaints have emerged regarding misleading 'no ads' claims and technical failures in ad dismissal that render the app unplayable. - **[HIGH]** **[Shifted] Formalization of Competitive Landscape:** The report now identifies specific market nemeses (Easybrain) and contenders (NYT, Microsoft), highlighting a more crowded and aggressive competitive environment. - [MED] **[Declined] Refined Weakness Profile:** Weaknesses were updated to specifically call out misleading marketing and technical bugs that force app restarts, moving beyond general 'intrusive ads'. - [MED] **[Shifted] Audience Scope Expansion:** Target audience definition expanded to include experts seeking challenging logic puzzles, rather than just casual/offline players. ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### Sudoku - Classic Sudoku Puzzle vs Sudoku.com - Number Games — Head to Head - **[Sudoku.com - Number Games](https://marlvel.ai/intel-report/games/sudoku-com-number-games)** by Easybrain: The market leader in the classic Sudoku sub-genre, mirroring the analyzed app's feature set, daily challenges, and ad-supported model. ### Contenders (Strong Challengers) - **Sudoku** by PeopleFun: Strong contender from a major puzzle studio focusing on daily engagement and high-quality visual presentation. - **Sudoku - Classic Sudoku Puzzle** by Oakever Games: Matches the analyzed app's difficulty tiers and note-taking features, targeting the same skill-progression user journey. - **Sudoku - Classic Sudoku Game** by MobilityWare: A credible alternative from a developer specializing in classic card and board games, emphasizing daily goals and trophies. - **Sudoku - Brain Puzzle Game** by Symmetryspace: Directly overlaps in the 'Brain Game' messaging and provides a similar dark mode and statistics tracking system. ### Peers (What They Do Better) - **[Microsoft Sudoku](https://marlvel.ai/intel-report/games/microsoft-sudoku)** by Microsoft Corporation: A high-quality implementation of the same sub-genre with cross-platform appeal and Xbox integration. - **Killer Sudoku by Sudoku.com** by Easybrain: An adjacent sub-genre (Killer Sudoku) that attracts the same logic-puzzle enthusiasts looking for more complexity. - **NYT Games: Word, Number & Logic** by The New York Times Company: Includes a highly popular Sudoku section that competes for the daily habit-forming puzzle user. - **[Nonogram.com - Picture Cross](https://marlvel.ai/intel-report/games/com-easybrain-nonogram)** by Easybrain: A different logic sub-genre that shares a high user overlap with Sudoku players seeking mental stimulation. ### New Kids on the Block (What's Innovative) - **Sudoku - Classic Sudoku Game** by Sparkle Games: A rising competitor with a modern UI and aggressive growth in the classic puzzle category. - **Sudoku - Brain Games** by Fun Free Fun: A newer entry focusing on the 'Brain Games' branding to capture users interested in cognitive health. ## The "So What?" (Strategic Takeaway) {#so-what} Sudoku - Classic Sudoku Puzzle is an established puzzle app that is free with in-app purchases. With a 4.77/5 rating from 644,137 reviews, it shows polarized user reception. **Strategic Opportunity:** While Sudoku - Classic Sudoku Puzzle benefits from massive user base with high overall ratings (4.7+), its vulnerability lies in aggressive and intrusive ad frequency. A challenger could exploit this by focusing on conversion of free users to a premium ad-free tier. **Best for:** Casual gamers and puzzle enthusiasts of all skill levels, from beginners looking for mental stimulation to experts seeking challenging logic puzzles. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.77/5 | | Total Reviews | 644,137 | | Sentiment | Mixed (48/100) | | Confidence | High | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 6 analyzed | | Trend | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Sudoku - Classic Sudoku Puzzle** (this app) | 4.77/5 | Mixed | Guru Puzzle Game | | [Sudoku.com - Number Games](https://marlvel.ai/intel-report/games/sudoku-com-number-games) | 4.8/5 | Frustrated | Easybrain Ltd | | [Microsoft Sudoku](https://marlvel.ai/intel-report/games/microsoft-sudoku) | 4.7/5 | Mixed | Microsoft Corporation | | [Nonogram.com - Number Games](https://marlvel.ai/intel-report/games/com-easybrain-nonogram) | 4.6/5 | Frustrated | Easybrain Ltd | | [Colorwood Blocks Puzzle Game](https://marlvel.ai/intel-report/puzzle/colorwood-blocks-puzzle-game) | 4.6/5 | Thrilled | Burny Games | | [Blockudoku®: Block Puzzle Game](https://marlvel.ai/intel-report/puzzle/blockudoku-block-puzzle-game) | 4.5/5 | Mixed | Easybrain | ## Company Profile - **Developer:** Guru Puzzle Game - **Website:** [https://sudoku.gurugame.ai/](https://sudoku.gurugame.ai/) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/sudoku-puzzle-brain-games/id1492978794?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=sudoku.puzzle.free.game.brain&hl=en&gl=us) - **Dev Site:** [Official Website](https://sudoku.gurugame.ai/) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## Related Intel Reports - [*Sudoku.com - Number Games*](https://marlvel.ai/intel-report/games/sudoku-com-number-games) (Easybrain Ltd) — 4.8/5 Rating | Negative Sentiment - [*Microsoft Sudoku*](https://marlvel.ai/intel-report/games/microsoft-sudoku) (Microsoft Corporation) — 4.7/5 Rating | Mixed Sentiment - [*Nonogram.com - Number Games*](https://marlvel.ai/intel-report/games/com-easybrain-nonogram) (Easybrain Ltd) — 4.6/5 Rating | Negative Sentiment - [*Colorwood Blocks Puzzle Game*](https://marlvel.ai/intel-report/puzzle/colorwood-blocks-puzzle-game) (Burny Games) — 4.6/5 Rating | Excellent Sentiment - [*Blockudoku®: Block Puzzle Game*](https://marlvel.ai/intel-report/puzzle/blockudoku-block-puzzle-game) (Easybrain) — 4.5/5 Rating | Mixed Sentiment - [*Bubble Shooter: Panda Pop!*](https://marlvel.ai/intel-report/puzzle/bubble-shooter-panda-pop-1) (Jam City, Inc.) — 4.6/5 Rating | Excellent Sentiment - [*Cookie Jam™ Match 3 Games*](https://marlvel.ai/intel-report/puzzle/cookie-jam-match-3-games-1) (Jam City, Inc.) — 4.6/5 Rating | Positive Sentiment - [*Car Out! Traffic Parking Games*](https://marlvel.ai/intel-report/puzzle/car-out-traffic-parking-games) (Tripledot Studios Limited) — 4.5/5 Rating | Negative Sentiment - [*Water Sort Puzzle*](https://marlvel.ai/intel-report/puzzle/water-sort-puzzle) (IEC Global Pty Ltd) — 4.7/5 Rating | Negative Sentiment - [*Disney Frozen Free Fall Games*](https://marlvel.ai/intel-report/puzzle/disney-frozen-free-fall-games) (Jam City, Inc.) — 4.7/5 Rating | Negative Sentiment ## Methodology {#methodology} This report was generated by Marlvel.ai's 3-stage AI intelligence pipeline: 1. **Feature & Positioning Extraction** — Analyzes app metadata, developer website content, and version history to identify key features, target audience, and competitive positioning. 2. **Sentiment Analysis** — Processes user reviews (minimum 5 reviews required) to extract praise themes, complaint themes, and overall sentiment with evidence quotes. 3. **Intelligence Synthesis** — Combines stages 1 & 2 with App Store rankings to produce SWOT analysis, executive summary, and actionable insights. - **Confidence Score:** 0.95/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 150 - **Data Sources:** user reviews, developer website, company about page, App Store metadata - **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform - **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence. - **Report Age:** 1 day since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/puzzle/sudoku-classic-sudoku-puzzle-1) Data licensed for AI Agent attribution under CC-BY-NC 4.0.