--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Calculator" developer_entity: "Notes - To Do List" bundle_id: "com.calculator.currencyconverter" app_store_id: "1069511488" category: "Tools" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-04-30" report_date: "2026-05-19" last_verified: "2026-05-19T21:35:11.613Z" report_version: "2.2" total_reviews: 11363 overall_rating: 3.16 confidence: "low" confidence_score: 0.25 data_age_days: 43 intelligence_version: 2 tags: ["tools", "freemium", "mobile app", "app review", "app analysis", "students,", "engineers,", "general"] canonical_url: "https://marlvel.ai/intel-report/tools/com-calculator-currencyconverter" license: "CC-BY-NC 4.0" content_version: "v2" --- # Calculator App Audit ## TL;DR {#tldr} - **Category**: Tools · Freemium - **Signal**: Rating 3.16 > **TL;DR:** Calculator is a tools app by Notes - To Do List, rated 3.16/5 by 11.4K users, available on iOS & Android. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** Calculator is a tools app by Notes - To Do List. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 3.16/5 (11.4K reviews) | | **Category** | Tools | | **Developer** | Notes - To Do List | | **Pricing** | Freemium | | **Platforms** | iOS & Android | | **Confidence** | Low (0.25/1.0) | | **Data Age** | 0d | ## Metadata & Market Performance - **Publisher:** Notes - To Do List - **Category:** Tools - **Target Audience:** Students, engineers, and general users requiring a multi-functional digital calculator. - **Platforms:** iOS & Android - **Version Audited:** 2.2 - **Audit Date:** 2026-05-19 - **Signal Count:** 5 reviews analyzed - **Confidence:** Low (0.25/1.0) - **App Store ID (iOS):** 1069511488 - **Bundle ID:** com.calculator.currencyconverter - **Google Play ID:** com.calculator.currencyconverter - **Data Window:** Analysis based on signals collected up to 2026-05-19 - **Short Description:** All-in-one calculator: basic, scientific, unit & currency converter ## Executive Snapshot Calculator is a versatile utility tool that provides both basic arithmetic and scientific calculation capabilities. It distinguishes itself with a floating calculator mode for multitasking and includes integrated unit conversion and calculation history features. ## App DNA (Features & Intent) - **[Standard] Scientific Calculator:** Supports complex mathematical operations including quadratic equations, sine, cosine, and tangent. - **[Standard] Floating Calculator:** Allows users to perform calculations in a floating window to facilitate multitasking. - **[Standard] Unit Converter:** Includes an integrated tool for converting various units of measurement. - **[Standard] Calculation History:** Maintains a record of past inputs to assist with productivity and reference. * *User Intent:* Users seek enhanced value through premium features. ## Monetization Strategy - **Model:** Freemium ## The "So What?" (Strategic Takeaway) {#so-what} Calculator is an established tools app that is free with in-app purchases. With a 3.16/5 rating from 11.4K reviews, it shows polarized user reception. > **Bottom Line:** While the app offers a robust feature set, user feedback indicates that the high frequency of unskippable advertisements significantly impacts the core user experience. **Best for:** Students, engineers, and general users requiring a multi-functional digital calculator. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 3.16/5 | | Total Reviews | 11.4K | | Confidence | Low | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 4 analyzed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Calculator** (this app) | 3.16/5 | N/A | Notes - To Do List | | [Voli: Volume limiter for Kids](https://marlvel.ai/intel-report/tools/voli-volume-limiter-for-kids) | 3.7/5 | N/A | Petr Nálevka (Urbandroid) | | [Horse Id : Horse Identifier](https://marlvel.ai/intel-report/tools/horse-id-horse-identifier) | N/A/5 | N/A | TLUTech | | [Spy Hidden Camera Detector](https://marlvel.ai/intel-report/tools/spy-hidden-camera-detector) | 4.2/5 | N/A | chao71117 | | [Black Notes: Notes and Lists](https://marlvel.ai/intel-report/tools/black-notes-notes-and-lists) | 4.8/5 | Excited | AM Company | | [Canon Print Service](https://marlvel.ai/intel-report/tools/canon-print-service) | 4.0/5 | Upset | Canon Inc. | ## Company Profile - **Developer:** Notes - To Do List - **Website:** [https://calculatorcurrencyconverter.jk-txt.com](https://calculatorcurrencyconverter.jk-txt.com) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/calculator/id1069511488?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.calculator.currencyconverter) - **Dev Site:** [Official Website](https://calculatorcurrencyconverter.jk-txt.com) - **Sources:** App store metadata, User reviews. ## Related Intel Reports - [*Voli: Volume limiter for Kids*](https://marlvel.ai/intel-report/tools/voli-volume-limiter-for-kids) (Petr Nálevka (Urbandroid)) — 3.7/5 Rating | N/A Sentiment - [*Horse Id : Horse Identifier*](https://marlvel.ai/intel-report/tools/horse-id-horse-identifier) (TLUTech) — N/A Rating | N/A Sentiment - [*Spy Hidden Camera Detector*](https://marlvel.ai/intel-report/tools/spy-hidden-camera-detector) (chao71117) — 4.2/5 Rating | N/A Sentiment - [*Black Notes: Notes and Lists*](https://marlvel.ai/intel-report/tools/black-notes-notes-and-lists) (AM Company) — 4.8/5 Rating | Positive Sentiment - [*Canon Print Service*](https://marlvel.ai/intel-report/tools/canon-print-service) (Canon Inc.) — 4.0/5 Rating | Terrible Sentiment - [*Browser X*](https://marlvel.ai/intel-report/tools/browser-x) (Prince Corp) — N/A Rating | N/A Sentiment - [*Fine Browser*](https://marlvel.ai/intel-report/tools/fine-browser) (Prince Corp) — 2.5/5 Rating | N/A Sentiment - [*BCloud365*](https://marlvel.ai/intel-report/tools/bcloud365) (Zhejiang JAIFY Co., Ltd.) — N/A Rating | N/A Sentiment - [*Remote for Chromecast TV*](https://marlvel.ai/intel-report/tools/remote-for-chromecast-tv) (KRAFTWERK 9 LTD) — 4.2/5 Rating | N/A Sentiment - [*Compass*](https://marlvel.ai/intel-report/tools/compass-4) (NixGame) — 4.0/5 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:** 0.25/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 5 - **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:** 0 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/intel-report/tools/com-calculator-currencyconverter) Data licensed for AI Agent attribution under CC-BY-NC 4.0.