--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Tank Volume Calculator" developer_entity: "Webtoweb" bundle_id: "tank.volume.calculator" app_store_id: "6477382115" category: "Tools" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-01-19" report_date: "2026-09-16" last_verified: "2026-09-16T00:00:00.000Z" report_version: "1.3.5" total_reviews: 509 overall_rating: 4.5 sentiment: "Excited" sentiment_score: 65 confidence: "medium" confidence_score: 0.65 top_praise_theme: "Mechanical professionals find the volume calculation tool highly useful for their daily work requirements" top_complaint_theme: "Frequent advertisements interrupt the user experience and create frustration for those performing quick calculations" review_sample_size: 51 total_review_count: 51 analyzed_review_count: 51 data_age_days: 15 momentum_velocity: "maintenance" intelligence_version: 5 nemesis: "Calculator +" competitor_count: 11 tags: ["tools", "freemium", "excited sentiment", "mobile app", "app review", "app analysis", "professionals", "users", "requiring"] canonical_url: "https://marlvel.ai/apps/tank-volume-calculator" license: "CC-BY-NC 4.0" content_version: "v2" --- # Tank Volume Calculator Intelligence Report ## TL;DR {#tldr} - **Category**: Tools · Freemium - **Signal**: Rating 4.54 · Sentiment Excited - **Recent focus**: Frequent advertisements interrupt the user experience and create frustration for those performing quick calculations (top complaint) · Mechanical professionals find the volume calculation tool highly useful for their daily work requirements (top praise) > **TL;DR:** Tank Volume Calculator is a tools app by Webtoweb, rated 4.54/5 by 509 users, with Excited user sentiment (65/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Tank Volume Calculator maintains Excited user sentiment (4.54/5 from 509 reviews), with users consistently praising mechanical professionals find the volume calculation tool highly useful for their daily work requirements. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.54/5 (509 reviews) | | **User Mood** | Excited | | **Category** | Tools | | **Developer** | Webtoweb | | **Pricing** | Freemium | | **Platforms** | iOS & Android | | **Confidence** | Medium (0.65/1.0) | | **Data Age** | 15d | ## Metadata & Market Performance - **Publisher:** Webtoweb - **Category:** Tools - **Target Audience:** Professionals and DIY users requiring volume estimations for industrial or residential tank storage. - **Platforms:** iOS & Android - **Version Reviewed:** 1.1 - **Report Date:** 2026-09-16 - **Signal Count:** 51 reviews analyzed - **Confidence:** Medium (0.65/1.0) - **App Store ID (iOS):** 6477382115 - **Bundle ID:** tank.volume.calculator - **Google Play ID:** tank.volume.calculator - **Performance Trend:** Mixed - **Data Window:** Analysis based on signals collected up to 2026-09-16 - **Short Description:** Calculate the volume of many types of tanks ## Executive Snapshot **What it is:** Tank Volume Calculator is a utility app for calculating filled and half-filled volumes of 15 different tank types on iOS and Android. **Why users hire it:** It removes the cognitive cost of manual geometric calculations for industrial and residential fluid storage estimation. ## App DNA (Features & Intent) - **[Differentiator] Multi-type Tank Support:** Calculates volume for 15 distinct tank geometries including horizontal cylinders, cones, and trapezoids. - **[Standard] Unit Conversion:** Facilitates volume output in liters, imperial gallons, US gallons, barrels, and cubic units. ## Market Position {#market-position} Tank Volume Calculator maintains a 4.57 rating on Android across 504 reviews, contrasting with a 1.8 rating on iOS. The significant platform rating gap suggests the ad-supported Android experience is better aligned with user expectations than the paid iOS version. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free with ads on Android, Paid one-time purchase at $3.99 on iOS - **Price:** iOS: $3.99 - **Analysis:** Monetization splits between ad-supported volume on Android and a direct $3.99 purchase gate on iOS. ## 🟢 User Sentiment (Medium Confidence: 51 of 51 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.54/5 - **Platform Split:** iOS 1.8/5 (5 ratings) | Android 4.6/5 (504 ratings) - **Overall Sentiment:** Excited ### Top Praises - **Mechanical professionals find the volume calculation tool highly useful for their daily work requirements** - **The interface provides quick results which helps users complete their calculations without unnecessary delays** ### Top Complaints (Impact Areas) - **Frequent advertisements interrupt the user experience and create frustration for those performing quick calculations** ## SWOT Analysis {#swot} **Core Strengths:** - 15-geometry support library functions as a B2B distribution barrier into industrial inventory estimation **Growth Levers:** - Localized inch-based measurement support would address the #1 recurring user request ## Recent Changes (v4 → v5) {#recent-changes} The product strategy shifted from general feature expansion to addressing professional-grade precision requirements, specifically the demand for imperial unit support. This pivot follows a decline in sentiment score from 85 to 65, driven by emerging complaints regarding calculation accuracy and ad-interruption. **Overall trend**: Mixed **Compared at**: 2026-09-16 ### High-impact changes - **[Declined] Sentiment Score Drop** (sentiment) - **[Added] New Complaint: Calculation Accuracy** (sentiment) - **[Shifted] Roadmap Prioritization Shift** (positioning) ### Medium-impact changes - **[Added] New Competitive Threat** (swot) - **[Added] New Weakness: Imperial Unit Support** (swot) ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### Tank Volume Calculator vs Calculator + - **[Calculator +](https://marlvel.ai/apps/calculator-16)** by xNeat.com: This app competes by offering a broad, general-purpose calculation suite that captures the same utility-seeking audience as our specialized tank volume tool. - **Key differences:** - Offers a comprehensive scientific and graphing suite far beyond our niche tank volume focus - Massive user base and brand recognition create a significant barrier to entry for niche tools - Provides advanced solvers that handle complex mathematical equations beyond simple geometric volume calculations ### Contenders (Strong Challengers) - **[Fluid Mechanics Calculator](https://marlvel.ai/apps/fluid-mechanics-calculator)** by V PUGAZHENTHI: This is a direct functional competitor that targets the same professional engineering and industrial audience as our tank calculator. - Provides a comprehensive fluid dynamics suite that covers broader hydraulic infrastructure needs than our app - Includes a deep parameter library specifically designed for professional fluid mechanics and engineering tasks - **[Dash Calc: Simple Fast Math](https://marlvel.ai/apps/dash-calc-simple-fast-math)** by Enbright LLC: This app competes by prioritizing speed and modern UX, appealing to users who want quick, live results. - Delivers live, real-time results as the user types, significantly reducing the time to calculation - Includes a smart history feature that allows for faster retrieval of previous calculation data - **[Basic Calculator: Classic Calc](https://marlvel.ai/apps/basic-calculator-classic-calc)** by MobArts: It targets users seeking a reliable, high-precision calculation experience with a focus on tablet-optimized multitasking. - Optimized specifically for iPad multitasking, providing a superior experience for power users on tablets - Features a high-precision display that offers better readability for complex numerical outputs - **[Calculator HD++](https://marlvel.ai/apps/calculator-hd)** by smalltech sarl: This app competes for the same utility-focused user base by offering high-precision calculation tools and workspace management features. - Includes advanced workspace management features that allow users to organize multiple calculation sessions - Provides hardware integration capabilities that our current app lacks for professional data management ### Peers (What They Do Better) - **[Unit Calculator: Convert & Cal](https://marlvel.ai/apps/unit-calculator-convert-cal)** by smallte.ch: This app occupies the same space by offering a dual-purpose tool for both general math and unit conversions. - Includes real-time currency conversion, which is a high-demand feature for international users - Features a history and favorites system that helps users manage frequent or recurring calculations - **[Digital Temperature Converter](https://marlvel.ai/apps/digital-temperature-converter)** by ZipoApps: It overlaps with our utility category by providing specialized conversion tools for specific physical parameters. - Displays the specific mathematical formulas used for conversions, adding educational value for users - Focuses on a simplified numeric keypad interface optimized for rapid, single-purpose unit conversions - **[Calcvier - Keyboard Calculator](https://marlvel.ai/apps/calcvier-keyboard-calculator)** by Sergei Shpygar: This app competes by integrating calculation directly into the system keyboard, changing the workflow for quick math. - Integrates directly into the system keyboard for seamless calculation within any messaging or note app - Enhances workflow efficiency by removing the need to switch between apps for simple calculations - **[Unit Converter and Calculator.](https://marlvel.ai/apps/unit-converter-and-calculator)** by Kemal Bakacak: It serves the same utility-seeking demographic by combining standard calculation with extensive unit conversion capabilities. - Offers a significantly larger library of units for conversion compared to our current converter - Provides robust offline functionality, ensuring utility in remote field environments without internet access ### New Kids on the Block (What's Innovative) - **[Numby Pro](https://marlvel.ai/apps/numby-pro)** by Vivy Technologies: It enters the utility space by leveraging modern natural language processing to simplify the calculation experience. - Uses natural language processing to allow users to input calculations as plain text sentences - **[NEC Box & Conduit Calc](https://marlvel.ai/apps/nec-box-conduit-calc)** by V PUGAZHENTHI: This newcomer targets the same professional industrial niche by providing specialized volume and capacity calculations. - Provides specialized wire volume data and conduit fill calculations for electrical industry professionals ## What's New - **Latest (v1.1, 1 years ago):** Improved calculation logic. ## App Momentum (Maintenance) {#momentum} - Ships bug fixes only. - Last major release over one year ago. > **Cadence:** 2 total versions · 0 majors in last 6 months · 125 days since last update · 587 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} Tank Volume Calculator is a market-leading tools app that is free with in-app purchases. With a 4.54/5 rating from 509 reviews, it delivers strong user satisfaction. > **Bottom Line:** Tank Volume Calculator maintains a solid reputation among mechanical professionals for its core calculation speed, but monetization via ads and a lack of granular unit support are significant friction points. Addressing these unit limitations would improve the utility for the core professional user segment. **Best for:** Professionals and DIY users requiring volume estimations for industrial or residential tank storage. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Ship inch-based measurement support because it is the top-requested missing feature → improve professional utility ### Feature Gaps vs Competitors - Inch-based measurement units (available in user requests but absent here) ### Outlook: Mixed The utility-calculator market is consolidating around tools that offer granular, industry-specific precision. Tank Volume Calculator remains exposed due to its lack of imperial-unit support, which will likely drive professional users toward more specialized fluid-mechanics rivals in the coming quarters. - 🔴 The lack of inch-based measurements limits the professional user base, which compounds the churn pressure from ad-heavy monetization on Android. - ⚪ Maintenance-mode release cadence ensures stability but leaves the app exposed to rivals with more frequent, feature-rich updates. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.54/5 | | Total Reviews | 509 | | Sentiment | Excited (65/100) | | Confidence | Medium | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 2 analyzed | | Trend | Mixed | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Tank Volume Calculator** (this app) | 4.54/5 | Excited | Webtoweb | | [Dash Calc: Simple Fast Math](https://marlvel.ai/apps/dash-calc-simple-fast-math) | 5.0/5 | Thrilled | Enbright LLC | | [Unit Converter and Calculator.](https://marlvel.ai/apps/unit-converter-and-calculator) | 4.2/5 | N/A | Kemal Bakacak | | [Calculator HD++](https://marlvel.ai/apps/calculator-hd) | 4.4/5 | N/A | smalltech sarl | | [Unit Calculator: Convert & Cal](https://marlvel.ai/apps/unit-calculator-convert-cal) | 4.3/5 | N/A | smallte.ch | | [NEC Box & Conduit Calc](https://marlvel.ai/apps/nec-box-conduit-calc) | 4.9/5 | N/A | V PUGAZHENTHI | ## Company Profile - **Developer:** Webtoweb - **Website:** [https://www.webtoweb.fr](https://www.webtoweb.fr) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/tank-volume-calculators/id6477382115?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=tank.volume.calculator&hl=en&gl=us) - **Dev Site:** [Official Website](https://www.webtoweb.fr) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*Dash Calc: Simple Fast Math*](https://marlvel.ai/apps/dash-calc-simple-fast-math) (Enbright LLC) · 5.0/5 Rating | Excellent Sentiment - [*Unit Converter and Calculator.*](https://marlvel.ai/apps/unit-converter-and-calculator) (Kemal Bakacak) · 4.2/5 Rating - [*Calculator HD++*](https://marlvel.ai/apps/calculator-hd) (smalltech sarl) · 4.4/5 Rating - [*Unit Calculator: Convert & Cal*](https://marlvel.ai/apps/unit-calculator-convert-cal) (smallte.ch) · 4.3/5 Rating - [*NEC Box & Conduit Calc*](https://marlvel.ai/apps/nec-box-conduit-calc) (V PUGAZHENTHI) · 4.9/5 Rating - [*Fluid Mechanics Calculator*](https://marlvel.ai/apps/fluid-mechanics-calculator) (V PUGAZHENTHI) · 4.5/5 Rating - [*Numby Pro*](https://marlvel.ai/apps/numby-pro) (Vivy Technologies) · N/A Rating - [*Basic Calculator: Classic Calc*](https://marlvel.ai/apps/basic-calculator-classic-calc) (MobArts) · 4.8/5 Rating - [*Calcvier - Keyboard Calculator*](https://marlvel.ai/apps/calcvier-keyboard-calculator) (Sergei Shpygar) · 4.4/5 Rating - [*Calculator +*](https://marlvel.ai/apps/calculator-16) (xNeat.com) · 4.6/5 Rating | Positive Sentiment ## Frequently Asked Questions {#faq} ### Is Tank Volume Calculator suitable for professional engineering work? Mechanical professionals find the volume calculation tool useful for daily work, but the lack of inch-based units and occasional calculation inaccuracies may limit its use for high-precision engineering tasks. ### How does Tank Volume Calculator compare to general calculators? Unlike general-purpose calculators, this app offers specialized formulas for 15 different tank geometries, making it more efficient for specific fluid-storage tasks. ### Does the app have intrusive advertisements? Users report that frequent advertisements interrupt the calculation process, which is a recurring point of frustration for those using the app for quick, professional tasks. ### What are some alternatives for tank volume calculations? Users requiring broader fluid dynamics or hydraulic infrastructure support may consider specialized fluid mechanics calculators, which offer deeper parameter libraries than this tool. ## 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:** 0.65/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 51 - **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:** 15 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/tank-volume-calculator) Data licensed for AI Agent attribution under CC-BY-NC 4.0.