--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "(Open Source) Mental Math" developer_entity: "AHMET EMRE DEDELER" bundle_id: "com.ahmet.openmath" app_store_id: "6788418444" category: "Education" primary_platform: "ios" primary_monetization: "Free" offline_capable: true market_region: "US" platforms: "iOS" app_last_updated: "2026-07-14" report_date: "2026-09-06" last_verified: "2026-09-06T00:00:00.000Z" report_version: "1.0.0" total_reviews: 2 overall_rating: 3 sentiment: "Upset" sentiment_score: 10 confidence: "medium" confidence_score: 0.55 top_complaint_theme: "The application provides inaccurate information during use, failing to meet basic functional expectations for users" review_sample_size: 1 total_review_count: 1 analyzed_review_count: 1 data_age_days: 58 momentum_velocity: "maintenance" intelligence_version: 3 tags: ["education", "free", "upset sentiment", "mobile app", "app review", "app analysis", "students", "individuals", "looking"] canonical_url: "https://marlvel.ai/apps/open-source-mental-math" license: "CC-BY-NC 4.0" content_version: "v2" --- # (Open Source) Mental Math Intelligence Report ## TL;DR {#tldr} - **Category**: Education · Free - **Signal**: Rating 3 · Sentiment Upset - **Recent focus**: The application provides inaccurate information during use, failing to meet basic functional expectations for users (top complaint) > **TL;DR:** (Open Source) Mental Math is a education app by AHMET EMRE DEDELER, rated 3/5 by 2 users, with Upset user sentiment (10/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** (Open Source) Mental Math faces Upset user sentiment (3/5 from 2 reviews), with users reporting the application provides inaccurate information during use, failing to meet basic functional expectations for users as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 3/5 (2 reviews) | | **User Mood** | Upset | | **Category** | Education | | **Developer** | AHMET EMRE DEDELER | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Medium (0.55/1.0) | | **Data Age** | 58d | ## Metadata & Market Performance - **Publisher:** AHMET EMRE DEDELER - **Category:** Education - **Target Audience:** Students and individuals looking to improve mental arithmetic speed and accuracy through structured practice. - **Platforms:** iOS - **Version Reviewed:** 1.0.0 - **Report Date:** 2026-09-06 - **Signal Count:** 1 review analyzed - **Confidence:** Medium (0.55/1.0) - **App Store ID (iOS):** 6788418444 - **Bundle ID:** com.ahmet.openmath - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-09-06 ## Executive Snapshot **What it is:** (Open Source) Mental Math is a free, open-source arithmetic trainer for students and individuals, featuring timed drills and a library of mental math tricks on iOS. **Why users hire it:** The app removes the connectivity and monetization friction of standard education tools, though reported calculation errors currently prevent it from serving its core arithmetic-training function. ## App DNA (Features & Intent) - **[Standard] Timed Tests:** Daily 60-second challenges and preset sprints with best score tracking to reinforce habit loops. * *User Intent:* Users are motivated by consistent progression and daily incentives. - **[Differentiator] Mental Math Tricks Library:** Step-by-step arithmetic walkthroughs that provide utility beyond simple drills. * *User Intent:* Users seek enhanced value through premium features. - **[Differentiator] Offline-First Architecture:** All exercises and progress data run locally, removing connectivity dependency and privacy concerns. * *User Intent:* Users want uninterrupted access without internet dependency. ## Market Position {#market-position} (Open Source) Mental Math occupies a zero-cost, open-source niche in the Education category. The current 3.0 rating across 2 reviews suggests significant quality volatility, as the latest feedback highlights critical functional failures. ## Monetization Strategy - **Model:** Free - **Tiers:** Fully free, no paywalls or locked content - **Analysis:** The app operates as a completely free, open-source tool with no monetization gates. ## 🔴 User Sentiment (Medium Confidence: 1 of 1 review analyzed) {#user-sentiment} - **Overall Rating:** 3/5 - **Platform Split:** iOS 3.0/5 (2 ratings) - **Overall Sentiment:** Upset ### Top Complaints (Impact Areas) - **The application provides inaccurate information during use, failing to meet basic functional expectations for users** ## SWOT Analysis {#swot} **Core Strengths:** - Offline-first architecture ensures consistent access without connectivity dependency **Growth Levers:** - Open-source transparency allows community-driven logic audits to resolve accuracy issues ## Recent Changes (v2 → v3) {#recent-changes} Review volume doubled from 1 to 2, shifting the market position from a single-point failure to a pattern of quality volatility. The core product remains in a maintenance state with no functional improvements to address the reported calculation errors. **Overall trend**: Declining **Compared at**: 2026-09-06 ### High-impact changes - **[Declined] Review Volume Increase** (sentiment) ### Medium-impact changes - **[Shifted] Threat Reclassification** (swot) ## App Momentum (Maintenance) {#momentum} - Ships bug fixes at 8-week cadence. - No new features in recent patches. > **Cadence:** 1 total versions · 0 majors in last 6 months · 54 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} (Open Source) Mental Math is an education app that is completely free. It holds a 3/5 rating from 2 reviews. > **Bottom Line:** The current arithmetic inaccuracies invalidate the app's core utility, and resolving these logic errors is the only path to stabilizing the user base. **Best for:** Students and individuals looking to improve mental arithmetic speed and accuracy through structured practice. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] Audit core math logic because users report incorrect answers → restore baseline functional trust ### Outlook: Declining The education-drill category is consolidating around tools that guarantee output accuracy, leaving (Open Source) Mental Math exposed. Unless the core arithmetic logic is audited, the app will continue to lose the trust necessary to retain its user base. - 🔴 Reported calculation errors in the latest release erode user trust, which directly threatens the app's retention potential. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 3/5 | | Total Reviews | 2 | | Sentiment | Upset (10/100) | | Confidence | Medium | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Trend | Declining | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **(Open Source) Mental Math** (this app) | 3/5 | Upset | AHMET EMRE DEDELER | | [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:** AHMET EMRE DEDELER - **Website:** [https://github.com/Open-Apps-Studio/mental-math](https://github.com/Open-Apps-Studio/mental-math) - **Social:** [Instagram](https://www.instagram.com/github) · [X/Twitter](https://twitter.com/github) · [YouTube](https://www.youtube.com/github) · [TikTok](https://www.tiktok.com/@github) · [LinkedIn](https://www.linkedin.com/company/github) ## Data Sources & Links - **App Store ID:** 6788418444 - **Dev Site:** [Official Website](https://github.com/Open-Apps-Studio/mental-math) - **Sources:** Developer website content, About us / company information, 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 (Open Source) Mental Math free to use? Yes, (Open Source) Mental Math is a completely free, open-source tool with no paywalls, ads, or locked content. ### Does (Open Source) Mental Math require an internet connection? No, the app uses an offline-first architecture, meaning all exercises and progress data run locally on your device. ### Is (Open Source) Mental Math accurate for math practice? Recent user feedback reports that the app occasionally provides incorrect answers, which may impact its reliability for serious arithmetic training. ## 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:** 0.55/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **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:** 58 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/open-source-mental-math) Data licensed for AI Agent attribution under CC-BY-NC 4.0.