--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "数学クイズ なん度？" developer_entity: "StudySwitch, Inc." bundle_id: "jp.co.gakkonet.quizqaangles" app_store_id: "541532555" category: "Education" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-02-06" report_date: "2026-05-24" last_verified: "2026-05-24T12:37:32.189Z" report_version: "8.21.0" total_reviews: 2347 overall_rating: 4.22 sentiment: "Mixed" sentiment_score: 70 confidence: "medium" confidence_score: 0.8 top_praise_theme: "Specialized geometry curriculum" top_complaint_theme: "Dated interface design" top_request_theme: "Competitive social leaderboards" review_sample_size: 61 data_age_days: 38 momentum_velocity: "maintenance" intelligence_version: 4 nemesis: "Multiplication Genius x19 Free" competitor_count: 11 tags: ["education", "freemium", "mixed sentiment", "mobile app", "app review", "app analysis", "students", "learners", "seeking"] canonical_url: "https://marlvel.ai/intel-report/education/jp-co-gakkonet-quizqaangles" license: "CC-BY-NC 4.0" content_version: "v2" --- # 数学クイズ なん度？ App Audit ## TL;DR {#tldr} - **Category**: Education · Freemium - **Signal**: Rating 4.22 · Sentiment Mixed - **Recent focus**: Dated interface design (top complaint) · Specialized geometry curriculum (top praise) · Competitive social leaderboards (top request) > **TL;DR:** 数学クイズ なん度？ is a education app by StudySwitch, Inc., rated 4.22/5 by 2.3K users, with Mixed user sentiment (70/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** 数学クイズ なん度？ shows Mixed sentiment (4.22/5 from 2.3K reviews) — users praise specialized geometry curriculum but report issues with dated interface design. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.22/5 (2.3K reviews) | | **User Mood** | Mixed | | **Category** | Education | | **Developer** | StudySwitch, Inc. | | **Pricing** | Freemium | | **Platforms** | iOS & Android | | **Confidence** | Medium (0.8/1.0) | | **Data Age** | 0d | ## Metadata & Market Performance - **Publisher:** StudySwitch, Inc. - **Category:** Education - **Target Audience:** Students and math learners seeking supplemental practice for geometry and logic, including institutional users in GIGA school environments. - **Platforms:** iOS & Android - **Version Audited:** 8.21.0 - **Audit Date:** 2026-05-24 - **Signal Count:** 61 reviews analyzed - **Confidence:** Medium (0.8/1.0) - **App Store ID (iOS):** 541532555 - **Bundle ID:** jp.co.gakkonet.quizqaangles - **Google Play ID:** jp.co.gakkonet.quizqaangles - **Performance Trend:** Mixed - **Data Window:** Analysis based on signals collected up to 2026-05-24 - **Short Description:** All-new, easy to play, challenging, exciting math game! Solve 340 questions! ## Executive Snapshot **What it is:** 数学クイズ なん度？ is a geometry and math practice app for students, structured around stage-based problem solving on iOS and Android. **Why users hire it:** Users hire this app for supplemental geometry practice that standard arithmetic games ignore, allowing them to master specific concepts like angles and polygons. ## App DNA (Features & Intent) - **[Differentiator] Handwritten Calculation Memo:** On-screen scratchpad for manual calculation notes within the problem interface * *User Intent:* Users seek enhanced value through premium features. - **[Differentiator] Social Hint Sharing:** Integration with Twitter to share problem images and request answers from friends * *User Intent:* Users seek social connection and competitive engagement with peers. - **[Standard] Ad-Free IAP:** Optional purchase to remove advertisements, specifically targeted at students and educational institutions ## Market Position {#market-position} The app maintains a stable 4.37 average rating across 2,347 total ratings, but the 2012 release date signals a lack of feature parity with modern competitors. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free with ad-supported content, Ad-free experience via one-time IAP - **Analysis:** Freemium model relies on ad-inventory for the mass market while gating ad-free access for institutional and younger users. ## 🟡 User Sentiment (Medium Confidence: 2.3K reviews) {#user-sentiment} - **Overall Rating:** 4.22/5 - **Platform Split:** iOS 4.6/5 (195 ratings) | Android 4.2/5 (2.2K ratings) - **Overall Sentiment:** Mixed ### Top Praises - **Specialized geometry curriculum** ### Top Complaints (Impact Areas) - **Dated interface design** ### Top Requests (What Users Want) - **Competitive social leaderboards** ## SWOT Analysis {#swot} **Core Strengths:** - Handwritten memo feature reduces calculation friction - Specialized geometry curriculum provides clear educational utility **Critical Frictions:** - Dated interface design (2012 release date) - Lack of competitive social leaderboards - No cloud-save functionality **Growth Levers:** - Integrate ClassKit for institutional adoption - Add gamified competitive modes to match nemesis retention **Market Threats:** - Modern competitors with frequent update cadences - Shift toward adaptive learning platforms like Zapzapmath ## Recent Changes (v3 → v4) {#recent-changes} The app has transitioned from a focus on technical IAP failures to a broader critique of its stagnant, dated interface and lack of modern social features. **Overall trend**: Mixed **Compared at**: 2026-05-24 ### High-impact changes - **[Declined] Sentiment and Rating Drop** (sentiment) — Overall sentiment shifted from 'excellent' to 'mixed', with the sentiment score falling from 85 to 70 and the rating declining from 4.56 to 4.37. ### Medium-impact changes - **[Added] New Weakness: Dated Interface** (swot) — The 2012 release date is now explicitly identified as a weakness, replacing the previous focus on IAP-related crashes. - **[Added] New Weakness: Lack of Cloud-Save** (swot) — Cloud-save functionality was identified as a missing feature and a new weakness in the SWOT analysis. - **[Shifted] Strategic Focus Shift** (positioning) — The executive summary shifted from prioritizing IAP stability to addressing the competitive threat posed by the stagnant 2012-era interface. ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### 数学クイズ なん度？ vs Multiplication Genius x19 Free — Head to Head - **[Multiplication Genius x19 Free](https://marlvel.ai/intel-report/education/multiplication-genius-x19-free)** by GameZen, Inc.: This app directly competes for the same casual education audience by gamifying core arithmetic skills through repetitive, high-frequency practice sessions. - **Key differences:** - Features competitive Game Center leaderboards to drive social retention that our app currently lacks. - Focuses on multiplication mastery, whereas our app targets geometry and angle-based problem solving. - Utilizes a 'Perfect Run' scoring mechanic to incentivize accuracy over simple completion speed. - **Where 数学クイズ なん度？ wins:** - ✅ Offers a more specialized curriculum focusing on geometry and angles rather than basic arithmetic. - ✅ Provides a more modern, updated interface compared to the nemesis's stagnant 2016 codebase. - **Where Multiplication Genius x19 Free wins:** - ❌ Established social proof through Game Center leaderboards that encourages repeat daily engagement. - ❌ Higher volume of user reviews suggests a more entrenched position in the casual math category. - **Verdict:** We should prioritize adding social leaderboards and competitive modes to neutralize their engagement advantage while leaning into our niche geometry focus. ### Contenders (Strong Challengers) - **[AnzanDojo](https://marlvel.ai/intel-report/education/anzandojo)** by ZOOMO Inc.: It targets the same Japanese-speaking educational market with a focus on mental calculation and social sharing. - Specializes in mental calculation challenges that require rapid, non-visualized problem solving. - Integrates Twitter score sharing to leverage social networks for organic growth and user acquisition. - **[Math training](https://marlvel.ai/intel-report/trivia/math-training)** by ArmShag: It competes by positioning math as a cognitive enhancement tool, appealing to the same users looking for brain-training games. - Provides detailed performance statistics that help users visualize their cognitive improvement over time. - Focuses on immersive game modes designed to simulate real-world cognitive pressure during math tasks. - **[iTimesTables multiply tests](https://marlvel.ai/intel-report/education/itimestables-multiply-tests)** by Nicholas Wilson: This app targets the same supplemental learning market by providing randomized testing environments for math students. - Offers granular custom difficulty settings that allow users to tailor the test to their specific needs. - Maintains a more frequent update cadence, ensuring compatibility with the latest mobile operating systems. - **[Operation Math Game](https://marlvel.ai/intel-report/education/operation-math-game)** by Little 10 Robot: It competes for the same K-12 educational demographic by using a mission-based narrative to teach math operations. - Implements a structured mission-based narrative that provides more context than our simple stage-based progression. - Includes customizable user profiles, allowing for better personalization and tracking of individual student progress. ### Peers (What They Do Better) - **[Zapzapmath School : K-6 Games](https://marlvel.ai/intel-report/education/zapzapmath-school-k-6-games)** by Visual Math Interactive Sdn. Bhd.: It targets the same K-6 educational segment with a comprehensive, standards-aligned curriculum. - Provides a web-based dashboard for teachers and parents to monitor student performance and progress. - Utilizes adaptive learning paths that automatically adjust difficulty based on the student's current performance. - **[Mental Math Games: FastMath](https://marlvel.ai/intel-report/education/mental-math-games-fastmath)** by Peter Schmidt: It competes for the same casual math-practice audience by emphasizing speed and timed challenges. - Offers a highly customizable trainer mode that adapts to the user's specific skill level. - Focuses on advanced math operations, catering to a slightly more mature or skilled demographic. - **[Ncalc - Graphing Calculator 84](https://marlvel.ai/intel-report/education/ncalc-graphing-calculator-84)** by Tran Duy: It serves the same math-focused user base by providing advanced utility tools for higher-level mathematical operations. - Features a powerful computer algebra system capable of handling complex calculus and data analysis. - Provides a comprehensive graphing engine that serves as a functional replacement for physical calculators. - **[Algebra Touch: All Ages](https://marlvel.ai/intel-report/education/algebra-touch-all-ages)** by Regular Berry LLC: It occupies the same educational space by using interactive, touch-based interfaces to teach complex mathematical concepts. - Uses kinesthetic manipulatives to help students physically interact with algebraic equations on screen. - Includes ClassKit integration, making it a preferred choice for formal classroom and school environments. ### New Kids on the Block (What's Innovative) - **[The Federalist Papers - Study](https://marlvel.ai/intel-report/education/the-federalist-papers-study)** by Hector Minaya: While focused on history, it competes for the same educational study-aid market by using interactive quizzes. - Integrates audio narration and flashcards to support multi-modal learning styles for academic study. - **[Long Addition and Subtraction](https://marlvel.ai/intel-report/education/long-addition-and-subtraction)** by OCD Inc.: This newcomer enters the same primary education market by focusing on foundational arithmetic through a distraction-free interface. - Employs a structured, column-based solving interface that mimics traditional paper-and-pencil math methods. ## What's New - **Latest (v1.6, 13 years ago):** Added support for iPhone 5 screen resolution. ## App Momentum (Maintenance) {#momentum} - Ships stability updates for latest OS. - Maintains long-term geometry curriculum focus. > **Cadence:** 5 total versions · 1 majors in last 6 months · 107 days since last update · 266 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} 数学クイズ なん度？ is an established education app that is free with in-app purchases. With a 4.22/5 rating from 2.3K reviews, it shows polarized user reception. > **Bottom Line:** The app succeeds by providing a specialized geometry curriculum, but the stagnant UI and lack of social features threaten its long-term retention, so the PM should prioritize adding competitive leaderboards to neutralize the nemesis advantage. **Best for:** Students and math learners seeking supplemental practice for geometry and logic, including institutional users in GIGA school environments. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] [HIGH IMPACT] Ship social leaderboards because the nemesis uses them to drive daily retention → increase daily active habit — *Nemesis Multiplication Genius x19 uses leaderboards to drive repeat engagement, which our app currently lacks.* _(trade-off: deprioritize Pause the UI refresh sprint — retention mechanics take priority over visual polish.)_ - [ ] [PIVOT] [MEDIUM IMPACT] Audit UI for modern design standards because dated interface is a top complaint → reduce churn — *User reviews consistently cite the stagnant 2012-era interface as a primary frustration.* _(trade-off: deprioritize Deprioritize new content stages — current 340 questions are sufficient for the core user base.)_ ### Feature Gaps vs Competitors - Competitive leaderboards (available in Multiplication Genius x19 Free but absent here) - Cloud-save functionality (available in Operation Math Game but absent here) ### Outlook: Mixed The casual math-practice market is consolidating around apps that offer high-frequency social feedback and adaptive difficulty. Without a UI refresh or social features, the app will likely see a gradual decline in new-user conversion as modern, gamified competitors capture the K-12 demographic. - 🔴 Stagnant interface design since 2012 leads to churn among users who expect modern visual polish, creating a competitive disadvantage. - 🟢 Specialized geometry curriculum maintains a loyal user base, providing a stable foundation for potential B2B institutional partnerships. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.22/5 | | Total Reviews | 2.3K | | Sentiment | Mixed (70/100) | | Confidence | Medium | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Trend | Mixed | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **数学クイズ なん度？** (this app) | 4.22/5 | Mixed | StudySwitch, Inc. | | [The Federalist Papers - Study](https://marlvel.ai/intel-report/education/the-federalist-papers-study) | N/A/5 | N/A | Hector Minaya | | [Operation Math Game](https://marlvel.ai/intel-report/education/operation-math-game) | 4.5/5 | N/A | Little 10 Robot | | [Math training](https://marlvel.ai/intel-report/trivia/math-training) | N/A/5 | N/A | ArmShag | | [Ncalc - Graphing Calculator 84](https://marlvel.ai/intel-report/education/ncalc-graphing-calculator-84) | 4.6/5 | N/A | Tran Duy | | [Long Addition and Subtraction](https://marlvel.ai/intel-report/education/long-addition-and-subtraction) | N/A/5 | N/A | OCD Inc. | ## Company Profile - **Developer:** StudySwitch, Inc. - **Website:** [https://www.studyswitch.co.jp/?appstore](https://www.studyswitch.co.jp/?appstore) - **Social:** [Facebook](https://www.facebook.com/391154754640977?ref=embed_page) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/%E6%95%B0%E5%AD%A6%E3%82%AF%E3%82%A4%E3%82%BA-%E3%81%AA%E3%82%93%E5%BA%A6/id541532555?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=jp.co.gakkonet.quizqaangles&hl=en&gl=us) - **Dev Site:** [Official Website](https://www.studyswitch.co.jp/?appstore) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## Related Intel Reports - [*The Federalist Papers - Study*](https://marlvel.ai/intel-report/education/the-federalist-papers-study) (Hector Minaya) — N/A Rating | N/A Sentiment - [*Operation Math Game*](https://marlvel.ai/intel-report/education/operation-math-game) (Little 10 Robot) — 4.5/5 Rating | N/A Sentiment - [*Math training*](https://marlvel.ai/intel-report/trivia/math-training) (ArmShag) — N/A Rating | N/A Sentiment - [*Ncalc - Graphing Calculator 84*](https://marlvel.ai/intel-report/education/ncalc-graphing-calculator-84) (Tran Duy) — 4.6/5 Rating | N/A Sentiment - [*Long Addition and Subtraction*](https://marlvel.ai/intel-report/education/long-addition-and-subtraction) (OCD Inc.) — N/A Rating | N/A Sentiment - [*AnzanDojo*](https://marlvel.ai/intel-report/education/anzandojo) (ZOOMO Inc.) — N/A Rating | N/A Sentiment - [*Algebra Touch: All Ages*](https://marlvel.ai/intel-report/education/algebra-touch-all-ages) (Regular Berry LLC) — 4.7/5 Rating | Mixed Sentiment - [*Mental Math Games: FastMath*](https://marlvel.ai/intel-report/education/mental-math-games-fastmath) (Peter Schmidt) — 5.0/5 Rating | N/A Sentiment - [*Zapzapmath School : K-6 Games*](https://marlvel.ai/intel-report/education/zapzapmath-school-k-6-games) (Visual Math Interactive Sdn. Bhd.) — 4.6/5 Rating | Mixed Sentiment - [*Multiplication Genius x19 Free*](https://marlvel.ai/intel-report/education/multiplication-genius-x19-free) (GameZen, Inc.) — 4.8/5 Rating | N/A Sentiment ## 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 and evidence quoting. 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:** 0.8/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 61 - **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:** 0 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/education/jp-co-gakkonet-quizqaangles) Data licensed for AI Agent attribution under CC-BY-NC 4.0.