--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Sudoku-Solver" developer_entity: "time4innovation UG (haftungsbeschraenkt)" bundle_id: "time4innovation.Sudoku" app_store_id: "643713367" category: "Games" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2016-10-26" report_date: "2026-10-30" last_verified: "2026-10-30T00:00:00.000Z" report_version: "1.8" total_reviews: 4 overall_rating: 4.3 sentiment: "Frustrated" sentiment_score: 25 confidence: "medium" confidence_score: 0.45 top_complaint_theme: "Hint system provides answers for random squares instead of guiding players through the logical next step" review_sample_size: 1 total_review_count: 1 analyzed_review_count: 1 data_age_days: 15 momentum_velocity: "zombie" intelligence_version: 2 tags: ["games", "free", "frustrated sentiment", "mobile app", "app review", "app analysis", "sudoku", "players", "seeking"] canonical_url: "https://marlvel.ai/apps/sudoku-solver-1" license: "CC-BY-NC 4.0" content_version: "v2" --- # Sudoku-Solver Intelligence Report ## TL;DR {#tldr} - **Category**: Games · Free - **Signal**: Rating 4.25 · Sentiment Frustrated - **Recent focus**: Hint system provides answers for random squares instead of guiding players through the logical next step (top complaint) > **TL;DR:** Sudoku-Solver is a games app by time4innovation UG (haftungsbeschraenkt), rated 4.25/5 by 4 users, with Frustrated user sentiment (25/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Sudoku-Solver faces Frustrated user sentiment (4.25/5 from 4 reviews), with users reporting hint system provides answers for random squares instead of guiding players through the logical next step as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.25/5 (4 reviews) | | **User Mood** | Frustrated | | **Category** | Games | | **Developer** | time4innovation UG (haftungsbeschraenkt) | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Medium (0.45/1.0) | | **Data Age** | 15d | ## Metadata & Market Performance - **Publisher:** time4innovation UG (haftungsbeschraenkt) - **Category:** Games - **Target Audience:** Sudoku players seeking assistance with difficult puzzles or a tool to verify their own solutions. - **Platforms:** iOS - **Version Reviewed:** 1.8 - **Report Date:** 2026-10-30 - **Signal Count:** 1 review analyzed - **Confidence:** Medium (0.45/1.0) - **App Store ID (iOS):** 643713367 - **Bundle ID:** time4innovation.Sudoku - **Data Window:** Analysis based on signals collected up to 2026-10-30 ## Executive Snapshot **What it is:** Sudoku-Solver is a puzzle utility for manual grid entry and automated solution generation on iOS. **Why users hire it:** The app serves users who need immediate verification for difficult Sudoku puzzles, displacing the need for manual trial-and-error. ## App DNA (Features & Intent) - **[Standard] Sudoku Solver Engine:** Automated calculation of Sudoku solutions for multiple difficulty levels - **[Differentiator] Step-by-Step Construction:** Guided walkthrough of the solution process for user-inputted puzzles * *User Intent:* Users need clear guidance to understand and adopt the product quickly. - **[Standard] Hint System:** Reveals an arbitrary cell value to assist users without providing the full solution * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} Sudoku-Solver holds a static position as a legacy utility with no recent updates since 2016. The lack of monetization or active development distinguishes it from modern, ad-supported or subscription-based puzzle competitors. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app is distributed as a free utility with no visible in-app purchase or subscription gates. ## 🔴 User Sentiment (Medium Confidence: 1 of 1 review analyzed) {#user-sentiment} - **Overall Rating:** 4.25/5 - **Platform Split:** iOS 4.3/5 (4 ratings) - **Overall Sentiment:** Frustrated - **Note:** The 4.25/5 store rating reflects cumulative history, while the Frustrated sentiment reflects recent user reviews analyzed by our AI pipeline. ### Top Complaints (Impact Areas) - **Hint system provides answers for random squares instead of guiding players through the logical next step** ## SWOT Analysis {#swot} **Core Strengths:** - Automated solver engine provides instant solutions **Growth Levers:** - Implement logic-based hints to improve user retention ## What's New - **Latest (v1.8, 10 years ago):** Introduced support for iOS 10 customizations. ## App Momentum (Zombie) {#momentum} - No updates for over 120 months - Maintenance-mode status confirmed > **Cadence:** 1 total versions · 1 majors in last 6 months · 3656 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Sudoku-Solver is a games app that is completely free. It holds a 4.25/5 rating from 4 reviews. > **Bottom Line:** Sudoku-Solver remains a static utility that fails to evolve its hint logic, leaving users frustrated by the lack of pedagogical guidance. The absence of development investment since 2016 signals that the app is no longer a viable competitor. **Best for:** Sudoku players seeking assistance with difficult puzzles or a tool to verify their own solutions. ### PM Action Plan (Next Best Moves) - [ ] [SUNSET] Sunset the app because the development cycle has been dormant for over a decade → eliminate support costs ### Outlook: Declining The puzzle utility market is consolidating around apps with frequent live-ops and modern UI/UX standards. Sudoku-Solver's failure to update since 2016 leaves it exposed to compatibility issues, ensuring a continued decline in relevance. - 🔴 The lack of updates since 2016 indicates the app is in terminal maintenance, which will eventually lead to total user churn. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.25/5 | | Total Reviews | 4 | | Sentiment | Frustrated (25/100) | | Confidence | Medium | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Sudoku-Solver** (this app) | 4.25/5 | Frustrated | time4innovation UG (haftungsbeschraenkt) | | [Bingo Cash - Win Real Money](https://marlvel.ai/apps/bingo-cash) | 4.7/5 | Excited | Papaya Gaming | | [Royal Match](https://marlvel.ai/apps/royal-match) | 4.7/5 | n/a | Dream Games | | [Temple Run](https://marlvel.ai/apps/temple-run) | 4.3/5 | Mixed | Imangi Studios, LLC | | [2 Player Games : Offline Games](https://marlvel.ai/apps/2-player-games-offline-games) | 4.8/5 | Thrilled | Moreno Maio | | [Avatar Life - love & bit gacha](https://marlvel.ai/apps/avatar-life-love-bit-gacha) | 3.8/5 | n/a | 101XP LIMITED | ## Company Profile - **Developer:** time4innovation UG (haftungsbeschraenkt) - **Website:** [https://www.time4innovation.de](https://www.time4innovation.de) - **Social:** [Instagram](https://www.instagram.com/time4innovation) · [Facebook](https://www.facebook.com/time4innovation) · [LinkedIn](https://www.linkedin.com/company/time4innovation-software-apps-web-it) ## Data Sources & Links - **App Store ID:** 643713367 - **Dev Site:** [Official Website](https://www.time4innovation.de) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*Bingo Cash - Win Real Money*](https://marlvel.ai/apps/bingo-cash) (Papaya Gaming) · 4.7/5 Rating | Positive Sentiment - [*Royal Match*](https://marlvel.ai/apps/royal-match) (Dream Games) · 4.7/5 Rating - [*Temple Run*](https://marlvel.ai/apps/temple-run) (Imangi Studios, LLC) · 4.3/5 Rating - [*2 Player Games : Offline Games*](https://marlvel.ai/apps/2-player-games-offline-games) (Moreno Maio) · 4.8/5 Rating | Excellent Sentiment - [*Avatar Life - love & bit gacha*](https://marlvel.ai/apps/avatar-life-love-bit-gacha) (101XP LIMITED) · 3.8/5 Rating - [*Ball Eater!*](https://marlvel.ai/apps/ball-eater) (Talha Ekren) · N/A Rating - [*Basketball Sim Leagues*](https://marlvel.ai/apps/basketball-sim-leagues) (Bacci Media) · 5.0/5 Rating - [*Battle Run*](https://marlvel.ai/apps/battle-run) (Game Hive Corp.) · 3.9/5 Rating - [*Bingo Bash: Live Bingo Games*](https://marlvel.ai/apps/bingo-bash-live-bingo-games) (Scopely, Inc.) · 4.5/5 Rating - [*Bingo Drive: Live Clash Tour*](https://marlvel.ai/apps/bingo-drive-live-clash-tour) (Gliding Deer) · 4.7/5 Rating ## Frequently Asked Questions {#faq} ### Is Sudoku-Solver free to use? Yes, Sudoku-Solver is distributed as a free utility with no visible in-app purchases or subscription gates. ### Does Sudoku-Solver help me learn how to solve Sudoku? The app provides a hint system, but users report it provides answers for random squares rather than teaching the logical steps required to solve the puzzle. ### Is Sudoku-Solver still being updated? No, the app has not received an update since October 2016, indicating it is in maintenance mode. ## Methodology {#methodology} This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline: 1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps. 2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks. 3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes). 4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category. 5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights. - **Confidence Score:** 0.45/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **Data Sources:** user reviews, developer website, 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:** 15 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/sudoku-solver-1) Data licensed for AI Agent attribution under CC-BY-NC 4.0.