--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Time Calc. Pro" developer_entity: "Hiroyuki Nishijima" bundle_id: "jp.ne.so-net.xa3.nishiji.TimeCalcPro" app_store_id: "1509605480" category: "Utilities" primary_platform: "ios" primary_monetization: "Paid" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2024-11-04" report_date: "2026-06-19" last_verified: "2026-06-19T09:46:58.383Z" report_version: "1.2" total_reviews: 0 confidence: "low" confidence_score: 0.05 data_age_days: 28 momentum_velocity: "zombie" intelligence_version: 3 nemesis: "Time Duration/Add Calculator" competitor_count: 7 tags: ["utilities", "paid", "mobile app", "app review", "app analysis", "users", "requiring", "dedicated"] canonical_url: "https://marlvel.ai/apps/time-calc-pro" license: "CC-BY-NC 4.0" content_version: "v2" --- # Time Calc. Pro App Audit ## TL;DR {#tldr} - **Category**: Utilities · Paid > **TL;DR:** Time Calc. Pro is a utilities app by Hiroyuki Nishijima, available on iOS. > > **Marlvel.ai App Intelligence** — Independent analysis. US Market. No publisher influence. > **Key Insight:** Time Calc. Pro is a utilities app by Hiroyuki Nishijima. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Utilities | | **Developer** | Hiroyuki Nishijima | | **Pricing** | Paid | | **Platforms** | iOS | | **Confidence** | Low (0.05/1.0) | | **Data Age** | 28d | ## Metadata & Market Performance - **Publisher:** Hiroyuki Nishijima - **Category:** Utilities - **Target Audience:** Users requiring a dedicated tool for time-based arithmetic who prefer a clutter-free interface. - **Platforms:** iOS - **Version Audited:** 1.2 - **Audit Date:** 2026-06-19 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.05/1.0) - **App Store ID (iOS):** 1509605480 - **Bundle ID:** jp.ne.so-net.xa3.nishiji.TimeCalcPro - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-06-19 ## Executive Snapshot **What it is:** Time Calc. Pro is a specialized utility calculator for time-based arithmetic, available as a paid app on iOS. **Why users hire it:** Users hire this tool for distraction-free time math, as the ad-free design maximizes screen real estate for calculation history logs. ## App DNA (Features & Intent) - **[Standard] Time Calculation Engine:** Adds and subtracts hours and minutes for time-based arithmetic - **[Standard] Calculation History:** Logs previous operations for reference on the history screen - **[Differentiator] Customizable Key Layout:** Toggles between computer-style and phone-style keypad interfaces * *User Intent:* Users value self-expression and personalized experiences. - **[Differentiator] Ad-Free Interface:** Removes all advertisements to maximize screen real estate for the history log ## Market Position {#market-position} Time Calc. Pro occupies a premium, ad-free niche in the utility category, contrasting with the ad-supported models of most duration calculators. ## Monetization Strategy - **Model:** Paid - **Tiers:** Single purchase at $0.99 - **Price:** iOS: $0.99 - **Analysis:** Paid model at $0.99 removes ad-inventory to prioritize screen space for calculation history. ## SWOT Analysis {#swot} **Core Strengths:** - Ad-free interface maximizes history log visibility - Customizable key layouts provide ergonomic flexibility **Critical Frictions:** - Premium tier at $0.99 above category median - Lacks unit conversion tools found in rivals **Growth Levers:** - Integrate unit conversion to match nemesis parity - Expand into professional time-tracking workflows **Market Threats:** - Free ad-supported rivals with broader feature sets - New entrants integrating analytics dashboards ## Recent Changes (v2 → v3) {#recent-changes} The competitive landscape was updated to identify a more direct functional rival, leading to the prioritization of unit conversion tools as a key feature gap. **Overall trend**: Stable **Compared at**: 2026-06-19 ### High-impact changes - **[Shifted] Primary Nemesis Update** (positioning) — Calculator₊ (Impala Studios) → Time Duration/Add Calculator (Kouji Yamauchi) as the primary direct competitor. - **[Added] Unit Conversion Gap** (features) — Added 'Unit conversion tools' to feature gaps, noting its absence in the target app compared to the new primary nemesis. ### Medium-impact changes - **[Added] SWOT Alignment** (swot) — Added 'Lacks unit conversion tools' to weaknesses and 'Integrate unit conversion' to opportunities. - **[Added] PM Action Item** (positioning) — Added a mandate to ship unit conversion tools, deprioritizing keypad layout refinements. ## Rivals Landscape {#rivals} > Competitive positioning identified by AI analysis of app features, category, and market signals. ### Time Calc. Pro vs Time Duration/Add Calculator — Head to Head - **[Time Duration/Add Calculator](https://marlvel.ai/apps/time-duration-add-calculator)** by Kouji Yamauchi: This app is a direct functional competitor that focuses exclusively on time-based arithmetic, mirroring the core utility of Time Calc. Pro. - **Key differences:** - Includes dedicated unit conversion features that expand utility beyond simple addition and subtraction tasks. - Offers a more specialized focus on elapsed time calculations compared to the target's general layout. - **Where Time Calc. Pro wins:** - ✅ Provides a customizable key layout that mimics both computer and phone interfaces for better ergonomics. - ✅ Offers an ad-free experience that allows for a cleaner, wider history screen interface. - **Where Time Duration/Add Calculator wins:** - ❌ Includes built-in unit conversion tools which provide higher value for users needing complex time math. - ❌ Established longer in the market with a specific focus on time-duration workflows. - **Verdict:** The target app should emphasize its superior UI customization and ad-free experience to differentiate from this more feature-dense but potentially cluttered rival. ### Peers (What They Do Better) - **[Rigging Bridle Calculator+](https://marlvel.ai/apps/org-reactjs-native-example-riggingapp)** by Pawel Szepietowski: This app targets a niche professional audience with a specialized calculator, overlapping with the target's utility-focused market. - Provides industry-specific rigging geometry tools that solve highly technical problems for a professional user base. - Offers greater unit flexibility tailored specifically to the requirements of rigging and construction professionals. - **[Angle Meter PRO](https://marlvel.ai/apps/angle-meter-pro)** by nakhon phagdeechat: This is a utility tool that leverages device hardware for measurement, competing for the attention of users needing precision tools. - Utilizes camera-based measurement and image analysis, providing a physical-world utility that time calculators cannot match. - Includes robust data documentation features that allow users to save and export their measurement history. - **[Beam Calculator.](https://marlvel.ai/apps/beam-calculator-1)** by Sachinbhai Surani: This app competes for the same 'utility calculator' screen real estate by providing specialized structural engineering math. - Provides advanced structural analysis solvers that offer significantly higher technical complexity than simple time arithmetic. - Implements a clear monetization strategy through ad-removal IAP, creating a predictable revenue stream. - **[Aspect Ratio Pro](https://marlvel.ai/apps/aspect-ratio-pro)** by App ahead GmbH: Both apps serve as specialized utility calculators designed to solve specific professional or technical math problems. - Focuses on rule-of-three calculations which cater to design and photography workflows rather than time tracking. - Maintains a more frequent update cadence, signaling active development and support for newer iOS versions. ### New Kids on the Block (What's Innovative) - **[Irrigation Calculator Pro](https://marlvel.ai/apps/irrigation-calculator-pro)** by Cederic Schmid: This app is a new entrant in the utility category that combines calculation with scheduling and data management. - Features an analytics dashboard and offline functionality that provide a more comprehensive user experience than simple arithmetic tools. - **[MKS Beton](https://marlvel.ai/apps/com-mksbetongroup-mymksbeton)** by MKS BETON LLC: This newcomer includes a material calculator, which competes for the same 'utility' intent as the target app. - Integrates a product catalog and commercial inquiry system, positioning the calculator as part of a broader business ecosystem. ## What's New - **Latest (v1.2, 1 years ago):** Updated app icon. ## App Momentum (Zombie) {#momentum} - Maintains paid-only monetization model. - Last major update November 2024. > **Cadence:** 1 total versions · 0 majors in last 6 months · 591 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Time Calc. Pro is an established utilities app that is a paid app. > **Bottom Line:** Time Calc. Pro holds its niche through a clean, ad-free experience, but the lack of unit conversion tools limits its utility against free rivals, so the PM should prioritize feature parity to justify the $0.99 price. **Best for:** Users requiring a dedicated tool for time-based arithmetic who prefer a clutter-free interface. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] [MEDIUM IMPACT] Ship unit conversion tools because rivals include them → increase competitive parity — *Nemesis app includes unit conversion, creating a feature gap that limits the target's utility.* _(trade-off: deprioritize Pause the keypad layout refinement sprint — unit conversion has higher impact on user acquisition.)_ ### Feature Gaps vs Competitors - Unit conversion tools (available in Time Duration/Add Calculator) ### Outlook: Stable The utility calculator market is consolidating around apps that offer integrated data management, leaving simple arithmetic tools exposed. Time Calc. Pro must move beyond basic calculation to maintain relevance against rivals that offer broader professional workflows. - ⚪ The latest update focused on stability, suggesting the app is in a maintenance phase rather than active feature expansion. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Total Reviews | 0 | | Confidence | Low | | Pricing Model | Paid | | Platforms | iOS | | Key Features | 4 analyzed | | Trend | Stable | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Time Calc. Pro** (this app) | N/A/5 | N/A | Hiroyuki Nishijima | | [MKS Beton](https://marlvel.ai/apps/com-mksbetongroup-mymksbeton) | N/A/5 | N/A | MKS BETON LLC | | [Rigging Bridle Calculator+](https://marlvel.ai/apps/org-reactjs-native-example-riggingapp) | 1.0/5 | N/A | Pawel Szepietowski | | [Angle Meter PRO](https://marlvel.ai/apps/angle-meter-pro) | 4.2/5 | N/A | nakhon phagdeechat | | [Irrigation Calculator Pro](https://marlvel.ai/apps/irrigation-calculator-pro) | N/A/5 | N/A | Cederic Schmid | | [Aspect Ratio Pro](https://marlvel.ai/apps/aspect-ratio-pro) | 4.0/5 | N/A | App ahead GmbH | ## Company Profile - **Developer:** Hiroyuki Nishijima ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/time-calc-pro/id1509605480?uo=4) - **Sources:** App store metadata. ## Related Intel Reports - [*MKS Beton*](https://marlvel.ai/apps/com-mksbetongroup-mymksbeton) (MKS BETON LLC) — N/A Rating | N/A Sentiment - [*Rigging Bridle Calculator+*](https://marlvel.ai/apps/org-reactjs-native-example-riggingapp) (Pawel Szepietowski) — 1.0/5 Rating | N/A Sentiment - [*Angle Meter PRO*](https://marlvel.ai/apps/angle-meter-pro) (nakhon phagdeechat) — 4.2/5 Rating | N/A Sentiment - [*Irrigation Calculator Pro*](https://marlvel.ai/apps/irrigation-calculator-pro) (Cederic Schmid) — N/A Rating | N/A Sentiment - [*Aspect Ratio Pro*](https://marlvel.ai/apps/aspect-ratio-pro) (App ahead GmbH) — 4.0/5 Rating | N/A Sentiment - [*Beam Calculator.*](https://marlvel.ai/apps/beam-calculator-1) (Sachinbhai Surani) — 5.0/5 Rating | Excellent Sentiment - [*Time Duration/Add Calculator*](https://marlvel.ai/apps/time-duration-add-calculator) (Kouji Yamauchi) — N/A Rating | N/A Sentiment - [*Quantumult X*](https://marlvel.ai/apps/quantumult-x) (Cross Utility Ltd) — 3.8/5 Rating | N/A Sentiment - [*Potatso*](https://marlvel.ai/apps/potatso) (Potatso Lab LTD) — 4.4/5 Rating | Positive Sentiment - [*Free VPN by Free VPN .org™*](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) (Free VPN LLC) — 4.4/5 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:** 0.05/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** 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:** 28 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/time-calc-pro) Data licensed for AI Agent attribution under CC-BY-NC 4.0.