## ⚠ Content Warning This report covers topics classified as sensitive (finance). Information is aggregated from public sources for informational purposes only. This is not financial or investment advice. Always do your own research. --- last_verified: "2026-05-19T10:22:07.175Z" --- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Modulus Calculator" developer_entity: "Theodore Dubois" bundle_id: "com.tbodt.Mod-Calculator" app_store_id: "1432356578" google_play_id: "com.miui.calculator" category: "Utilities" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2023-03-23" report_date: "2026-05-19" last_verified: "2026-05-19" report_version: "1.0" total_reviews: 367099 overall_rating: 4.28 sentiment: "Mixed" sentiment_score: 55 confidence: "low" confidence_score: 0.8 top_praise_theme: "The lightweight design and fast calculation speed provide a reliable experience for daily math tasks" top_complaint_theme: "Calculation errors and cursor jumping during long sequences frustrate users performing complex daily financial tallies" top_request_theme: "Expanded financial calculation tools like loan and EMI modules are requested to improve utility" review_sample_size: 53 total_review_count: 53 analyzed_review_count: 53 data_age_days: 0 momentum_velocity: "zombie" intelligence_version: 3 nemesis: "Calculator₊" competitor_count: 6 tags: ["utilities", "free", "mixed sentiment", "mobile app", "app review", "app analysis", "general", "android", "users"] canonical_url: "https://marlvel.ai/intel-report/utilities/modulus-calculator" license: "CC-BY-NC 4.0" content_version: "v2" --- # Modulus Calculator App Audit ## TL;DR {#tldr} - **Category**: Utilities · Free - **Signal**: Rating 4.28 · Sentiment Mixed - **Recent focus**: Calculation errors and cursor jumping during long sequences frustrate users performing complex daily financial tallies (top complaint) · The lightweight design and fast calculation speed provide a reliable experience for daily math tasks (top praise) · Expanded financial calculation tools like loan and EMI modules are requested to improve utility (top request) > **TL;DR:** Modulus Calculator is a utilities app by Theodore Dubois, rated 4.28/5 by 367.1K users, with Mixed user sentiment (55/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** Modulus Calculator shows Mixed sentiment (4.28/5 from 367.1K reviews) — users praise the lightweight design and fast calculation speed provide a reliable experience for daily math tasks but report issues with calculation errors and cursor jumping during long sequences frustrate users performing complex daily financial tallies. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.28/5 (367.1K reviews) | | **User Mood** | Mixed | | **Category** | Utilities | | **Developer** | Theodore Dubois | | **Pricing** | Free | | **Platforms** | iOS & Android | | **Confidence** | Low (0.8/1.0) | | **Data Age** | 0d | ## Metadata & Market Performance - **Publisher:** Theodore Dubois - **Category:** Utilities - **Target Audience:** General Android users requiring a multi-functional utility tool for daily mathematical, financial, and unit conversion tasks. - **Platforms:** iOS & Android - **Version Audited:** 1.0 - **Audit Date:** 2026-05-19 - **Signal Count:** 53 reviews analyzed - **Confidence:** Low (0.8/1.0) - **App Store ID (iOS):** 1432356578 - **Bundle ID:** com.tbodt.Mod-Calculator - **Google Play ID:** com.miui.calculator - **Performance Trend:** Mixed - **Data Window:** Analysis based on signals collected up to 2026-05-19 - **Short Description:** Calculator and converter by Xiaomi ## Executive Snapshot **What it is:** Modulus Calculator is a multi-functional utility app for Android that bundles scientific, financial, and unit-conversion tools into a single interface. **Why users hire it:** Users hire this app to consolidate disparate daily calculation tasks into one lightweight tool, reducing the need for multiple specialized applications. ## App DNA (Features & Intent) - **[Standard] All-in-one Calculator Suite:** Bundles regular, scientific, mortgage, age, BMI, discount, and date calculators into a single interface. - **[Standard] Universal Currency Converter:** Provides exchange rate conversions with daily updates. * *User Intent:* Users are motivated by consistent progression and daily incentives. - **[Differentiator] GST Calculator:** Calculates goods and services tax specifically for the Indian market. ## Market Position {#market-position} Modulus Calculator maintains a high install base through broad hardware compatibility, but the lack of recent feature updates relative to competitors like Calculator₊ signals a risk of stagnation. The 4.28 rating on Android reflects persistent technical friction that limits its ability to capture high-end device users. ## Monetization Strategy - **Model:** Free - **Tiers:** Free, ad-supported - **Analysis:** The app operates as a free, ad-supported utility with no IAP or subscription gates, prioritizing massive user acquisition across the Android ecosystem. ## 🟡 User Sentiment (Low Confidence: 53 of 53 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.28/5 - **Platform Split:** iOS 4.8/5 (8 ratings) | Android 4.3/5 (367.1K ratings) - **Overall Sentiment:** Mixed ### Top Praises - **The lightweight design and fast calculation speed provide a reliable experience for daily math tasks** ### Top Complaints (Impact Areas) - **Calculation errors and cursor jumping during long sequences frustrate users performing complex daily financial tallies** ### Top Requests (What Users Want) - **Expanded financial calculation tools like loan and EMI modules are requested to improve utility** ## SWOT Analysis {#swot} **Core Strengths:** - Regional GST calculator functions as a B2B distribution moat in India - Broad hardware optimization maximizes Android install base **Critical Frictions:** - Cursor-stability bugs in long sequences erode trust - Dark mode contrast issues force unnecessary app restarts - 0.47★ Android-iOS rating gap **Growth Levers:** - Untapped B2B partnerships in education - Integration of advanced loan/EMI modules to satisfy high-intent financial users **Market Threats:** - High-velocity release cadence of Calculator₊ - Native system-level integration of Apple's Calculator - Technical regressions on flagship hardware ## Recent Changes (v2 → v3) {#recent-changes} The app transitioned from a specialized iOS modular calculator to a general-purpose Android utility suite, resulting in lower user ratings and new technical complaints regarding calculation accuracy. **Overall trend**: Mixed **Compared at**: 2026-05-19 ### High-impact changes - **[Shifted] Platform and Core Utility Pivot** (positioning) — The app moved from an iOS-exclusive modular arithmetic tool to an Android-based multi-functional calculator suite. - **[Declined] Rating and Sentiment Drop** (sentiment) — Overall sentiment shifted from excellent to mixed, with the average rating falling from 4.75 to 4.28. - **[Added] Emergence of Technical Complaints** (sentiment) — New user complaints regarding cursor jumping and calculation errors in long sequences have surfaced, impacting the core utility. ### Medium-impact changes - **[Added] Calculator Suite Expansion** (features) — Replaced modular-specific features with a broad suite including GST, currency conversion, mortgage, age, and BMI calculators. - **[Shifted] Monetization Model Update** (pricing) — Shifted from a free, non-monetized utility to an ad-supported model. ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### Modulus Calculator vs Calculator₊ — Head to Head - **[Calculator₊](https://marlvel.ai/intel-report/utilities/com-itwcalculator-calculatorforipadfree)** by Impala Studios: With over 1.7 million ratings and a high-velocity release cadence, this app dominates the utility calculator space through sheer scale and consistent feature updates. - **Moat strength:** High — sustainable advantage over 12 months - **Key differences:** - Maintains a high-frequency update cycle with 8 releases in the last six months alone. - Established long-term market presence since 2010 creates a significant barrier to entry for new competitors. - Optimized for iPad-specific screen real estate, capturing a segment the target app largely ignores. - **Where Modulus Calculator wins:** - ✅ Offers a more streamlined, lightweight interface that avoids the feature bloat found in legacy calculators. - ✅ Provides better cross-platform consistency for users transitioning between Android and iOS ecosystems. - **Where Calculator₊ wins:** - ❌ Aggressive release schedule ensures constant feature parity with the latest iOS design language and APIs. - ❌ Massive user base provides a data-driven feedback loop that informs rapid, iterative product improvements. - **Verdict:** The target app must pivot toward a specialized utility niche or power-user feature set to avoid being completely overshadowed by the scale and update velocity of this incumbent. ### Contenders (Strong Challengers) - **[Calculator](https://marlvel.ai/intel-report/utilities/calculator-8)** by Apple [Moat: High]: As the native system utility, it holds a structural advantage in user acquisition and platform integration. - Deep system-level integration allows for immediate access via Control Center and lock screen widgets. - Zero-friction user experience as the default pre-installed utility for all iOS device owners. - **[Calculator´](https://marlvel.ai/intel-report/productivity/calculator-2)** by Oval Software Oy [Moat: Medium]: A high-volume competitor that serves as a direct alternative for users seeking a standard, no-frills calculation experience. - Focuses on a minimalist design language that appeals to users overwhelmed by multi-purpose calculator suites. - Maintains a stable, predictable feature set that prioritizes core arithmetic over complex unit conversions. ### Peers (What They Do Better) - **[CalcKit](https://marlvel.ai/intel-report/utilities/calckit)** by Akkyra Systems: A feature-rich alternative that bridges the gap between basic calculation and advanced scientific/unit conversion needs. - Includes an extensive library of specialized unit conversions that far exceeds the target app's basic capabilities. - Provides a highly customizable interface allowing users to pin frequently used formulas to the main screen. - **[Currency Converter Plus Live](https://marlvel.ai/intel-report/travel/currency-converter-plus-live)** by DigitAlchemy LLC: Targets the specific subset of the utility market focused on real-time financial data and travel-related conversions. - Integrates live market data feeds, providing a significant advantage over static or manual conversion tools. - Optimized for travel-centric workflows, including offline mode support for users without reliable data roaming. ### New Kids on the Block (What's Innovative) - **[Mortgage Calculator・](https://marlvel.ai/intel-report/finance/mortgage-calculator-1)** by Andy Sutanto: A recent entrant focusing on a high-intent financial niche, showing rapid growth potential in the last year. ## What's New - **Latest (vVARY, 3 years ago):** General bug fixes. ## App Momentum (Zombie) {#momentum} - Ships general bug fixes only. - Maintains broad Android hardware support. > **Cadence:** 2 total versions · 0 majors in last 6 months · 1152 days since last update · 1670 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} Modulus Calculator is an established utilities app that is completely free. With a 4.28/5 rating from 367.1K reviews, it shows polarized user reception. > **Bottom Line:** Modulus Calculator holds its category lead through sticky regional features like the GST calculator, but technical regressions erode trust, so revenue growth hinges on stabilizing the core arithmetic engine. **Best for:** General Android users requiring a multi-functional utility tool for daily mathematical, financial, and unit conversion tasks. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] [HIGH IMPACT] Rebuild cursor logic because calculation errors are the top complaint → stabilize long-sequence financial tallies — *Cursor jumping and calculation errors are the primary frustration theme in user reviews.* _(trade-off: deprioritize Push the loan/EMI module sprint to Q3 — stability is a prerequisite for financial utility.)_ - [ ] [MAINTAIN] [MEDIUM IMPACT] Audit dark mode contrast because visibility issues force app restarts → improve session retention — *Users report gray-on-dark text is unreadable, forcing them to minimize and reopen the app.* _(trade-off: deprioritize Same-quarter capacity available — no major lever displaced.)_ ### Feature Gaps vs Competitors - Real-time market data feeds (available in Currency Converter Plus Live but absent here) - Specialized amortization scheduling (available in Mortgage Calculator・ but absent here) ### Outlook: Mixed The utility market is consolidating around high-frequency update cycles, leaving apps in maintenance mode like Modulus Calculator exposed to specialized rivals. The subject app must pivot toward advanced financial modules to retain power users, or it will lose its chart position to entrants with better amortization visualization. - 🔴 Technical regressions on flagship hardware (failing icons, load errors) erode trust among high-value users, which compounds the rating drag already visible on Android. - 🟢 Regional localization (GST calculator) secures a defensible B2B distribution barrier in India, which protects the app from generic global utility competitors. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.28/5 | | Total Reviews | 367.1K | | Sentiment | Mixed (55/100) | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Trend | Mixed | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Modulus Calculator** (this app) | 4.28/5 | Mixed | Theodore Dubois | | [Calculator₊](https://marlvel.ai/intel-report/utilities/com-itwcalculator-calculatorforipadfree) | 4.7/5 | Mixed | Impala Studios | | [Calculator´](https://marlvel.ai/intel-report/productivity/calculator-2) | 4.6/5 | Mixed | Oval Software Oy | | [Calculator](https://marlvel.ai/intel-report/utilities/calculator-8) | 4.4/5 | N/A | Apple | | [Currency Converter Plus Live](https://marlvel.ai/intel-report/travel/currency-converter-plus-live) | 4.8/5 | N/A | DigitAlchemy LLC | | [CalcKit](https://marlvel.ai/intel-report/utilities/calckit) | 4.8/5 | N/A | Akkyra Systems | ## Company Profile - **Developer:** Theodore Dubois - **Website:** [https://www.xiaomi.com](https://www.xiaomi.com) - **Social:** [Instagram](https://www.instagram.com/xiaomi.northamerica) · [Facebook](https://www.facebook.com/XiaomiSupportGlobal) · [X/Twitter](https://twitter.com/xiaomisupport) · [YouTube](https://www.youtube.com/channel/UCR59Xjv9bcmjeeUuUZn7dkg) · [TikTok](https://www.tiktok.com/@xiaomi.northamerica) · [LinkedIn](https://www.linkedin.com/company/xiaomi-technology) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/modulus-calculator/id1432356578?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=com.miui.calculator&hl=en&gl=us) - **Dev Site:** [Official Website](https://www.xiaomi.com) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## Related Intel Reports - [*Calculator₊*](https://marlvel.ai/intel-report/utilities/com-itwcalculator-calculatorforipadfree) (Impala Studios) — 4.7/5 Rating | Mixed Sentiment - [*Calculator´*](https://marlvel.ai/intel-report/productivity/calculator-2) (Oval Software Oy) — 4.6/5 Rating | Mixed Sentiment - [*Calculator*](https://marlvel.ai/intel-report/utilities/calculator-8) (Apple) — 4.4/5 Rating | N/A Sentiment - [*Currency Converter Plus Live*](https://marlvel.ai/intel-report/travel/currency-converter-plus-live) (DigitAlchemy LLC) — 4.8/5 Rating | N/A Sentiment - [*CalcKit*](https://marlvel.ai/intel-report/utilities/calckit) (Akkyra Systems) — 4.8/5 Rating | N/A Sentiment - [*Mortgage Calculator・*](https://marlvel.ai/intel-report/finance/mortgage-calculator-1) (Andy Sutanto) — 4.8/5 Rating | N/A Sentiment - [*Potatso*](https://marlvel.ai/intel-report/utilities/potatso) (Potatso Lab LTD) — 4.4/5 Rating | N/A Sentiment - [*V2Box - V2ray Client*](https://marlvel.ai/intel-report/utilities/v2box-v2ray-client) (techlaim) — 4.6/5 Rating | N/A Sentiment - [*Quantumult X*](https://marlvel.ai/intel-report/utilities/quantumult-x) (Cross Utility Ltd) — 3.8/5 Rating | N/A Sentiment - [*Free VPN by Free VPN .org™*](https://marlvel.ai/intel-report/utilities/free-vpn-by-free-vpn-org) (Free VPN LLC) — 4.3/5 Rating | Mixed 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:** 53 - **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/utilities/modulus-calculator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.