--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Circle Calculator - Geometry" developer_entity: "AHMET DEMIR" bundle_id: "com.demrdev.circlecalculator" app_store_id: "6760240001" google_play_id: "com.circle_calculator_app" category: "Education" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: true market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-08-27" report_date: "2026-09-27" last_verified: "2026-09-27T00:00:00.000Z" report_version: "1.8.1" total_reviews: 0 sentiment: "Thrilled" sentiment_score: 90 confidence: "medium" confidence_score: 0.45 top_praise_theme: "The persistent measurement display remains visible while scrolling, allowing users to track input values easily" review_sample_size: 2 total_review_count: 2 analyzed_review_count: 2 data_age_days: 37 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["education", "freemium", "thrilled sentiment", "mobile app", "app review", "app analysis", "engineers,", "metalworkers,", "technical"] canonical_url: "https://marlvel.ai/apps/circle-calculator-geometry" license: "CC-BY-NC 4.0" content_version: "v2" --- # Circle Calculator - Geometry Intelligence Report ## TL;DR {#tldr} - **Category**: Education · Freemium - **Signal**: Sentiment Thrilled - **Recent focus**: The persistent measurement display remains visible while scrolling, allowing users to track input values easily (top praise) > **TL;DR:** Circle Calculator - Geometry is a education app by AHMET DEMIR, with Thrilled user sentiment (90/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Circle Calculator - Geometry is a education app by AHMET DEMIR. ## Quick Facts | Fact | Value | | :--- | :--- | | **User Mood** | Thrilled | | **Category** | Education | | **Developer** | AHMET DEMIR | | **Pricing** | Freemium | | **Platforms** | iOS & Android | | **Confidence** | Medium (0.45/1.0) | | **Data Age** | 37d | ## Metadata & Market Performance - **Publisher:** AHMET DEMIR - **Category:** Education - **Target Audience:** Engineers, metalworkers, and technical students requiring precise geometric calculations and offline workshop data. - **Platforms:** iOS & Android - **Version Reviewed:** 1.8.1 - **Report Date:** 2026-09-27 - **Signal Count:** 2 reviews analyzed - **Confidence:** Medium (0.45/1.0) - **App Store ID (iOS):** 6760240001 - **Bundle ID:** com.demrdev.circlecalculator - **Google Play ID:** com.circle_calculator_app - **Data Window:** Analysis based on signals collected up to 2026-09-27 ## Executive Snapshot **What it is:** Circle Calculator - Geometry is a specialized utility for engineers and metalworkers that provides geometric calculations and offline technical data on iOS and Android. **Why users hire it:** The app removes the need for internet connectivity during field work, displacing manual reference charts and general-purpose calculators with a persistent, workshop-ready interface. ## App DNA (Features & Intent) - **[Differentiator] Professional Workshop Exports:** Generates PDF, CSV, and DXF files for bolt circle coordinates and pipe templates. * *User Intent:* Users seek enhanced value through premium features. - **[Differentiator] Offline Pipe Schedule Database:** Access to DN/NPS pipe dimensions and weights without an active internet connection. * *User Intent:* Users want uninterrupted access without internet dependency. - **[Standard] Live Geometry Diagramming:** Visual representation of measurements that updates in real-time as inputs change. ## Market Position {#market-position} Circle Calculator - Geometry maintains a niche position in the Education category, focusing on professional utility rather than general academic study. The absence of a high-frequency update cadence suggests a stable, maintenance-focused strategy rather than a growth-oriented chart-climbing approach. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free tier with ads and limited project capacity, Pro tier via subscription or one-time purchase - **Analysis:** The freemium model gates professional export formats and expanded project capacity behind a Pro tier, while keeping core geometry tools free to drive ad-supported usage. ## 🟢 User Sentiment (Medium Confidence: 2 of 2 reviews analyzed) {#user-sentiment} - **Overall Sentiment:** Thrilled ### Top Praises - **The persistent measurement display remains visible while scrolling, allowing users to track input values easily** - **Manual input and slider options provide flexible control for users performing sketching and design tasks** - **The absence of advertisements creates a clean and focused experience for users performing calculations** ## SWOT Analysis {#swot} **Core Strengths:** - Offline-ready pipe schedule database reduces connectivity dependency for field workers - Persistent measurement display during interaction sustains session utility for design tasks - Professional export formats (DXF/CSV) create a direct conversion lever for CAD-ready workflows **Growth Levers:** - Expansion into localized metal-stock weight standards could capture untapped professional segments - Integration of direct CAD-software import plugins would deepen the Pro-tier value proposition ## What's New - **Latest (v1.8.1, 2 months ago):** Maintenance update focused on Android 16 compatibility, Google Play Billing v8, and stability. ## App Momentum (Maintenance) {#momentum} - Ships maintenance updates only - Last major release over two months ago > **Cadence:** 1 total versions · 0 majors in last 6 months · 66 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Circle Calculator - Geometry is an education app that is free with in-app purchases. > **Bottom Line:** The offline-first utility and professional export gates retain a core professional user base, but the maintenance-only cadence leaves the app vulnerable to faster-moving rivals. Prioritizing cloud-sync would address the primary friction point for professional users, securing the Pro-tier value. **Best for:** Engineers, metalworkers, and technical students requiring precise geometric calculations and offline workshop data. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Ship cloud-sync for project history because it is the primary friction point for multi-device professional users → increase Pro-tier retention ### Outlook: Stable The market for specialized engineering utilities is consolidating around tools that offer seamless integration with professional CAD workflows. Circle Calculator - Geometry remains advantaged by its offline-first design, but the lack of cloud-sync will eventually create a churn risk as professional users shift toward multi-device project management. - ⚪ The maintenance-only release cadence indicates a stable, low-overhead product strategy that prioritizes tool reliability over rapid feature expansion. - 🟢 High user satisfaction regarding the ad-free, persistent-display interface suggests the core utility is well-aligned with professional sketching and design workflows. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Total Reviews | 0 | | Sentiment | Thrilled (90/100) | | Confidence | Medium | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Circle Calculator - Geometry** (this app) | N/A/5 | Thrilled | AHMET DEMIR | | [ALPA: Lernspiele für Kinder](https://marlvel.ai/apps/alpa-lernspiele-fur-kinder) | N/A/5 | N/A | ALPA Kids OU | | [ATPdigital (Legacy)](https://marlvel.ai/apps/atpdigital-legacy) | 2.0/5 | n/a | Bristol Groundschool International Ltd | | [Catbus Student](https://marlvel.ai/apps/catbus-student) | 4.3/5 | N/A | Cohota Join Stock Company | | [Chinese Tibetan Dictionary](https://marlvel.ai/apps/chinese-tibetan-dictionary) | 5.0/5 | Thrilled | Lobsang Monlam16922404891 | | [Legasthenie & LRS Trainer](https://marlvel.ai/apps/legasthenie-lrs-trainer) | N/A/5 | N/A | Matthias Aigner | ## Company Profile - **Developer:** AHMET DEMIR - **Website:** [https://dmrio.com](https://dmrio.com) ## Data Sources & Links - **App Store ID:** 6760240001 - **Google Play ID:** com.circle_calculator_app - **Dev Site:** [Official Website](https://dmrio.com) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*ALPA: Lernspiele für Kinder*](https://marlvel.ai/apps/alpa-lernspiele-fur-kinder) (ALPA Kids OU) · N/A Rating - [*ATPdigital (Legacy)*](https://marlvel.ai/apps/atpdigital-legacy) (Bristol Groundschool International Ltd) · 2.0/5 Rating - [*Catbus Student*](https://marlvel.ai/apps/catbus-student) (Cohota Join Stock Company) · 4.3/5 Rating - [*Chinese Tibetan Dictionary*](https://marlvel.ai/apps/chinese-tibetan-dictionary) (Lobsang Monlam16922404891) · 5.0/5 Rating | Excellent Sentiment - [*Legasthenie & LRS Trainer*](https://marlvel.ai/apps/legasthenie-lrs-trainer) (Matthias Aigner) · N/A Rating - [*Lyceum Leaf Parent*](https://marlvel.ai/apps/lyceum-leaf-parent) (Techcess Business Solutions (Pvt) Ltd) · N/A Rating - [*Money Matrix (CAD)*](https://marlvel.ai/apps/money-matrix-cad) (Blooming Kids Software LLC) · 5.0/5 Rating - [*myTibetan*](https://marlvel.ai/apps/mytibetan) (Yury Nevalenny) · 4.8/5 Rating | Excellent Sentiment - [*Quran Treasure Island for Kids*](https://marlvel.ai/apps/quran-treasure-island-for-kids) (Akeela Manekia) · 4.9/5 Rating - [*Sudoku - Number Puzzle Pro*](https://marlvel.ai/apps/sudoku-number-puzzle-pro) (阳理 江) · N/A Rating ## Frequently Asked Questions {#faq} ### Is Circle Calculator - Geometry suitable for professional engineering work? Yes, the app provides specialized tools like bolt circle coordinates, pipe templates, and professional DXF/CSV exports that are tailored for workshop and CAD-ready workflows. ### Does Circle Calculator - Geometry require an internet connection? Core calculations and the pipe schedule database work offline. However, certain features like Pro-tier purchases, advertising, and sharing links may require an active internet connection. ### What is the difference between the free and Pro versions? The free version includes core geometry tools with ads. The Pro tier removes advertisements and unlocks advanced workshop exports, expanded project history, and increased project capacity. ## 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:** 2 - **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:** 37 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/circle-calculator-geometry) Data licensed for AI Agent attribution under CC-BY-NC 4.0.