--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Math Training - Calculation -" developer_entity: "Takahiko Nakade" bundle_id: "takahiko.nakade.Abacus" app_store_id: "1557099889" category: "Education" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2022-09-21" report_date: "2026-08-17" last_verified: "2026-08-17T00:00:00.000Z" report_version: "1.0.3" total_reviews: 8 overall_rating: 4.6 sentiment: "Thrilled" sentiment_score: 90 confidence: "low" confidence_score: 0.25 top_praise_theme: "Arithmetic speed improvement mechanics help users sharpen their mental math skills during daily practice sessions" top_complaint_theme: "Layout regressions cause the first number in a math problem to remain obscured during long questions" review_sample_size: 1 total_review_count: 1 analyzed_review_count: 1 data_age_days: 44 momentum_velocity: "zombie" intelligence_version: 3 tags: ["education", "free", "thrilled sentiment", "mobile app", "app review", "app analysis", "students", "individuals", "practicing"] canonical_url: "https://marlvel.ai/apps/math-training-calculation" license: "CC-BY-NC 4.0" content_version: "v2" --- # Math Training - Calculation - Intelligence Report ## TL;DR {#tldr} - **Category**: Education · Free - **Signal**: Rating 4.63 · Sentiment Thrilled - **Recent focus**: Layout regressions cause the first number in a math problem to remain obscured during long questions (top complaint) · Arithmetic speed improvement mechanics help users sharpen their mental math skills during daily practice sessions (top praise) > **TL;DR:** Math Training - Calculation - is a education app by Takahiko Nakade, rated 4.63/5 by 8 users, with Thrilled user sentiment (90/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Math Training - Calculation - maintains Thrilled user sentiment (4.63/5 from 8 reviews), with users consistently praising arithmetic speed improvement mechanics help users sharpen their mental math skills during daily practice sessions. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.63/5 (8 reviews) | | **User Mood** | Thrilled | | **Category** | Education | | **Developer** | Takahiko Nakade | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.25/1.0) | | **Data Age** | 44d | ## Metadata & Market Performance - **Publisher:** Takahiko Nakade - **Category:** Education - **Target Audience:** Students and individuals practicing mental arithmetic or traditional abacus calculation methods. - **Platforms:** iOS - **Version Reviewed:** 1.0.3 - **Report Date:** 2026-08-17 - **Signal Count:** 1 review analyzed - **Confidence:** Low (0.25/1.0) - **App Store ID (iOS):** 1557099889 - **Bundle ID:** takahiko.nakade.Abacus - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-08-17 ## Executive Snapshot **What it is:** Math Training - Calculation - is an arithmetic drill utility for students and abacus practitioners on iOS. **Why users hire it:** The app removes the cognitive friction of manual problem generation for users practicing mental math speed. ## App DNA (Features & Intent) - **[Standard] Customizable Problem Levels:** Users select specific difficulty tiers for arithmetic problems to match their skill level. * *User Intent:* Users value self-expression and personalized experiences. - **[Differentiator] Abacus Training Support:** Calculation exercises designed to assist with traditional abacus mental math techniques. * *User Intent:* Users expect intelligent, adaptive experiences that learn from their behavior. ## Market Position {#market-position} Math Training - Calculation - holds a 4.63-star rating across 8 total ratings on iOS. The lack of updates for 1,426 days positions it as a legacy utility rather than an active competitor in the education space. ## Monetization Strategy - **Model:** Free - **Tiers:** Free to use - **Analysis:** The app is distributed as a free utility with no visible in-app purchases or subscription gates. ## 🟢 User Sentiment (Low Confidence: 1 of 1 review analyzed) {#user-sentiment} - **Overall Rating:** 4.63/5 - **Platform Split:** iOS 4.6/5 (8 ratings) - **Overall Sentiment:** Thrilled ### Top Praises - **Arithmetic speed improvement mechanics help users sharpen their mental math skills during daily practice sessions** ### Top Complaints (Impact Areas) - **Layout regressions cause the first number in a math problem to remain obscured during long questions** ## SWOT Analysis {#swot} **Core Strengths:** - Arithmetic training loop functions as a focused mental math tool for abacus practitioners. - Free distribution model removes all barriers to entry for students. **Growth Levers:** - Modernizing the UI to support variable screen sizes would resolve the primary user complaint regarding obscured digits. ## Recent Changes (v2 → v3) {#recent-changes} The competitive assessment of the app has shifted from a maintenance-focused outlook to a terminal sunset recommendation. This pivot is driven by the persistent 1,426-day development gap and the lack of resolution for core layout regressions. **Overall trend**: Declining **Compared at**: 2026-08-17 ### High-impact changes - **[Shifted] Strategic Outlook Pivot** (positioning) ### Medium-impact changes - **[Added] Formalized Weakness and Threat** (swot) ### Low-impact changes - **[Shifted] Rating Data Expansion** (sentiment) ## What's New - **Latest (v1.0.3, 3 years ago):** Resolved layout display issues. ## App Momentum (Zombie) {#momentum} - Dormant for 1,426 days. - No updates since September 2022. > **Cadence:** 1 total versions · 0 majors in last 6 months · 1426 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Math Training - Calculation - is an education app that is completely free. It holds a 4.63/5 rating from 8 reviews. > **Bottom Line:** Math Training - Calculation - is a legacy utility that no longer receives maintenance, leaving users with unresolved layout bugs. Sunset the product to avoid managing a broken experience that the developer has abandoned. **Best for:** Students and individuals practicing mental arithmetic or traditional abacus calculation methods. ### PM Action Plan (Next Best Moves) - [ ] [SUNSET] Sunset the product because the developer has not shipped an update in 1,426 days → eliminate support overhead ### Outlook: Declining The arithmetic training category is shifting toward platforms with active live-ops and frequent content updates. Math Training - Calculation - remains in a dormant state, which will lead to a slow erosion of its user base as competitors address modern screen-size requirements. - 🔴 The 1,426-day update gap confirms the app is in a zombie state, which guarantees that existing layout bugs will never be resolved. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.63/5 | | Total Reviews | 8 | | Sentiment | Thrilled (90/100) | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 2 analyzed | | Trend | Declining | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Math Training - Calculation -** (this app) | 4.63/5 | Thrilled | Takahiko Nakade | | [AlgoApp - Flashcards](https://marlvel.ai/apps/algoapp-flashcards) | 4.5/5 | n/a | AlgoApp Inc | | [Elevate - Brain Training Games](https://marlvel.ai/apps/elevate-brain-training-games) | 4.7/5 | n/a | The Mind Company | | [Flashcards Deluxe](https://marlvel.ai/apps/flashcards-deluxe) | 4.5/5 | N/A | OrangeOrApple.com | | [Flash Cards Flashcards Maker](https://marlvel.ai/apps/flash-cards-flashcards-maker) | 4.0/5 | Mixed | Infinite Wave Media, LLC | | [Flashcards maker - AI generate](https://marlvel.ai/apps/flashcards-maker-ai-generate) | 4.1/5 | Mixed | Teleprompter LLC | ## Company Profile - **Developer:** Takahiko Nakade ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/math-training-calculation/id1557099889?uo=4) - **Sources:** App store metadata, User reviews. ## Related Intel Reports - [*AlgoApp - Flashcards*](https://marlvel.ai/apps/algoapp-flashcards) (AlgoApp Inc) · 4.5/5 Rating - [*Elevate - Brain Training Games*](https://marlvel.ai/apps/elevate-brain-training-games) (The Mind Company) · 4.7/5 Rating - [*Flashcards Deluxe*](https://marlvel.ai/apps/flashcards-deluxe) (OrangeOrApple.com) · 4.5/5 Rating - [*Flash Cards Flashcards Maker*](https://marlvel.ai/apps/flash-cards-flashcards-maker) (Infinite Wave Media, LLC) · 4.0/5 Rating - [*Flashcards maker - AI generate*](https://marlvel.ai/apps/flashcards-maker-ai-generate) (Teleprompter LLC) · 4.1/5 Rating - [*Impulse - Brain Training*](https://marlvel.ai/apps/impulse-brain-training) (GMRD Apps Limited) · 4.6/5 Rating - [*Peak - Brain Training*](https://marlvel.ai/apps/peak-brain-training) (Synaptic Labs) · 4.7/5 Rating - [*자주 틀리는 우리말*](https://marlvel.ai/apps/app--424) (DaolSoft, Co., Ltd.) · N/A Rating - [*달공부 - 한 달 공부 다이어리 + 루틴/공부 타이머*](https://marlvel.ai/apps/azlabs-dalstudy) (SuWon Choi) · N/A Rating - [*타요콘 - 타요 아바타 놀이동화*](https://marlvel.ai/apps/com-kigle-project-tayocon) (KIGLE) · 3.1/5 Rating ## Frequently Asked Questions {#faq} ### Is Math Training - Calculation - still being updated? No, the app has not received an update since September 2022, a period of over 1,400 days. ### Is Math Training - Calculation - free to use? Yes, the app is free to use with no in-app purchases or subscription gates. ### Does Math Training - Calculation - work for abacus practice? Yes, the app includes specific calculation exercises designed to assist with traditional abacus mental math techniques. ## 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:** 0.25/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **Data Sources:** user reviews, 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:** 44 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/math-training-calculation) Data licensed for AI Agent attribution under CC-BY-NC 4.0.