--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Week Number · Calendar Weeks" developer_entity: "Wenlin Fan" bundle_id: "in.wenl.weeknumber" app_store_id: "6791656746" category: "Utilities" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-07-22" report_date: "2026-08-03" last_verified: "2026-08-03T00:00:00.000Z" report_version: "1.0" total_reviews: 0 confidence: "low" confidence_score: 0.3 data_age_days: 59 momentum_velocity: "maintenance" intelligence_version: 3 tags: ["utilities", "free", "mobile app", "app review", "app analysis", "professionals", "planners", "require"] canonical_url: "https://marlvel.ai/apps/week-number-calendar-weeks" license: "CC-BY-NC 4.0" content_version: "v2" --- # Week Number · Calendar Weeks Intelligence Report ## TL;DR {#tldr} - **Category**: Utilities · Free > **TL;DR:** Week Number · Calendar Weeks is a utilities app by Wenlin Fan, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Week Number · Calendar Weeks is a utilities app by Wenlin Fan. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Utilities | | **Developer** | Wenlin Fan | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.3/1.0) | | **Data Age** | 59d | ## Metadata & Market Performance - **Publisher:** Wenlin Fan - **Category:** Utilities - **Target Audience:** Professionals and planners who require quick reference to calendar week numbers for scheduling and logistics. - **Platforms:** iOS - **Version Reviewed:** 1.0 - **Report Date:** 2026-08-03 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.3/1.0) - **App Store ID (iOS):** 6791656746 - **Bundle ID:** in.wenl.weeknumber - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-08-03 ## Executive Snapshot **What it is:** Week Number is a single-purpose utility for tracking calendar week numbers and date ranges on iOS and watchOS. **Why users hire it:** It removes the cognitive friction of calculating week-based dates for timesheets and logistics by providing a dedicated, privacy-focused reference tool. ## App DNA (Features & Intent) - **[Standard] Week Number Display:** Shows current week number, week-based year, and date range on launch. - **[Differentiator] Customizable Week Systems:** Toggles between ISO 8601 Monday-based and Sunday-based numbering. * *User Intent:* Users value self-expression and personalized experiences. - **[Standard] Home and Lock Screen Widgets:** Displays week information on iPhone and iPad home and lock screens. - **[Standard] Apple Watch Complications:** Provides week number access directly on Apple Watch faces. * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} Week Number operates as a free, privacy-focused utility in the Utilities category. Its lack of monetization positions it as a pure utility for users who prioritize privacy over feature-heavy calendar integration. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app is distributed as a free utility with no account, ads, or tracking. ## SWOT Analysis {#swot} **Core Strengths:** - Privacy-first design (no tracking or accounts) reduces user friction. - Customizable week systems (ISO 8601 vs Sunday-based) support diverse regional scheduling needs. **Growth Levers:** - Adding calendar-event integration could bridge the gap between reference and active scheduling. ## Recent Changes (v2 → v3) {#recent-changes} The product strategy shifted from passive maintenance to a targeted development goal of calendar-event integration. This pivot aims to transition the app from a static reference tool to an active scheduling utility. **Overall trend**: Stable **Compared at**: 2026-08-03 ### High-impact changes - **[Shifted] Roadmap Priority Shift** (positioning) ### Medium-impact changes - **[Shifted] Competitive Threat Re-alignment** (swot) - **[Added] Calendar Integration Opportunity** (swot) ## App Momentum (Maintenance) {#momentum} - Ships bug fixes at 12-day cadence. - No new features in latest release. > **Cadence:** 1 total versions · 0 majors in last 6 months · 12 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Week Number · Calendar Weeks is an utilities app that is completely free. > **Bottom Line:** Maintaining the current privacy-first, ad-free utility model preserves the app's niche appeal, but the lack of feature expansion limits its growth beyond a static reference tool. **Best for:** Professionals and planners who require quick reference to calendar week numbers for scheduling and logistics. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Ship calendar-event integration because it is the top missing utility for planners → increase daily active usage. ### Outlook: Stable The calendar utility market is consolidating around apps that offer integrated scheduling rather than isolated reference tools. Week Number remains advantaged for privacy-conscious users, but its lack of active development leaves it exposed to feature-creep from general-purpose calendar apps. - ⚪ The maintenance-only release cadence suggests the developer is prioritizing stability over feature expansion, keeping the app in a static utility state. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Total Reviews | 0 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 4 analyzed | | Trend | Stable | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Week Number · Calendar Weeks** (this app) | N/A/5 | N/A | Wenlin Fan | | [Free VPN by Free VPN .org™](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) | 4.5/5 | Mixed | Free VPN LLC | | [Potatso](https://marlvel.ai/apps/potatso) | 4.4/5 | n/a | Potatso Lab LTD | | [Quantumult X](https://marlvel.ai/apps/quantumult-x) | 3.8/5 | N/A | Cross Utility Ltd | | [V2Box - V2ray Client](https://marlvel.ai/apps/v2box-v2ray-client) | 4.5/5 | n/a | techlaim | | [카톡 분석 - 오픈채팅, 카톡 채팅 분석, 통계, 검색](https://marlvel.ai/apps/com-liger-katalkanalysispaid) | N/A/5 | N/A | Park Sung Cheol | ## Company Profile - **Developer:** Wenlin Fan - **Website:** [https://weeknumber.wenl.in/](https://weeknumber.wenl.in/) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/week-number-calendar-weeks/id6791656746?uo=4) - **Dev Site:** [Official Website](https://weeknumber.wenl.in/) - **Sources:** Developer website content, About us / company information, App store metadata. ## Related Intel Reports - [*Free VPN by Free VPN .org™*](https://marlvel.ai/apps/free-vpn-by-free-vpn-org) (Free VPN LLC) · 4.5/5 Rating - [*Potatso*](https://marlvel.ai/apps/potatso) (Potatso Lab LTD) · 4.4/5 Rating - [*Quantumult X*](https://marlvel.ai/apps/quantumult-x) (Cross Utility Ltd) · 3.8/5 Rating - [*V2Box - V2ray Client*](https://marlvel.ai/apps/v2box-v2ray-client) (techlaim) · 4.5/5 Rating - [*카톡 분석 - 오픈채팅, 카톡 채팅 분석, 통계, 검색*](https://marlvel.ai/apps/com-liger-katalkanalysispaid) (Park Sung Cheol) · N/A Rating - [*로또 황금번호 생성기*](https://marlvel.ai/apps/lotto-lottogold) (jaehwan lee) · N/A Rating - [*도사폰 (만세력 역학도구)*](https://marlvel.ai/apps/app--656) (Softchaser Company Limited) · 5.0/5 Rating - [*근로자 공수달력*](https://marlvel.ai/apps/jaehwan-worktracer) (jaehwan lee) · N/A Rating - [*レジュメ*](https://marlvel.ai/apps/app--54) (Indeed Inc.) · 2.2/5 Rating - [*세트타이머 - 쉽게 여러개의 타이머 설정*](https://marlvel.ai/apps/cswpd-multitimer) (SuWon Choi) · N/A Rating ## Frequently Asked Questions {#faq} ### Is Week Number free to use? Yes, the app is a free utility with no ads, no tracking, and no account requirements. ### Does Week Number support ISO 8601 week numbering? Yes, the app allows you to toggle between ISO 8601 Monday-based numbering and Sunday-based numbering. ### Can I see week numbers on my Apple Watch? Yes, the app includes an Apple Watch app and complications for your watch face. ### Does this app track my data? No, the app is designed to be private with no analytics, tracking, or account sign-ups required. ## 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:** 0.3/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** 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:** 59 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/week-number-calendar-weeks) Data licensed for AI Agent attribution under CC-BY-NC 4.0.