--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "倒数日 · Days Matter" developer_entity: "iDaily Corp." bundle_id: "com.chii.idays" app_store_id: "406170251" category: "Productivity" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-04-23" report_date: "2026-11-13" last_verified: "2026-11-13T00:00:00.000Z" report_version: "5.1" total_reviews: 7960 overall_rating: 4.8 sentiment: "Excited" sentiment_score: 85 confidence: "high" confidence_score: 0.9 top_praise_theme: "Long-term users value the consistent utility of tracking important life milestones and anniversaries" top_complaint_theme: "Recent updates caused critical widget failures and disappearance of existing home screen configurations" review_sample_size: 353 total_review_count: 353 analyzed_review_count: 62 data_age_days: 1 momentum_velocity: "maintenance" intelligence_version: 8 competitor_count: 1 tags: ["productivity", "freemium", "excited sentiment", "mobile app", "app review", "app analysis", "users", "seeking", "track"] canonical_url: "https://marlvel.ai/apps/days-matter" license: "CC-BY-NC 4.0" content_version: "v2" --- # 倒数日 · Days Matter Intelligence Report ## TL;DR {#tldr} - **Category**: Productivity · Freemium - **Signal**: Rating 4.84 · Sentiment Excited - **Recent focus**: Recent updates caused critical widget failures and disappearance of existing home screen configurations (top complaint) · Long-term users value the consistent utility of tracking important life milestones and anniversaries (top praise) > **TL;DR:** 倒数日 · Days Matter is a productivity app by iDaily Corp., rated 4.84/5 by 8K users, with Excited user sentiment (85/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** 倒数日 · Days Matter maintains Excited user sentiment (4.84/5 from 8K reviews), with users consistently praising long-term users value the consistent utility of tracking important life milestones and anniversaries. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.84/5 (8K reviews) | | **User Mood** | Excited | | **Category** | Productivity | | **Developer** | iDaily Corp. | | **Pricing** | Freemium | | **Platforms** | iOS | | **Confidence** | High (0.9/1.0) | | **Data Age** | 1d | ## Metadata & Market Performance - **Publisher:** iDaily Corp. - **Category:** Productivity - **Target Audience:** Users seeking to track personal milestones, anniversaries, and work deadlines with support for both Gregorian and Lunar calendars. - **Platforms:** iOS - **Version Reviewed:** 5.1 - **Report Date:** 2026-11-13 - **Signal Count:** 353 reviews analyzed - **Confidence:** High (0.9/1.0) - **App Store ID (iOS):** 406170251 - **Bundle ID:** com.chii.idays - **Performance Trend:** Stable - **Data Window:** Analysis based on signals collected up to 2026-11-13 ## Executive Snapshot **What it is:** 倒数日 · Days Matter is a productivity tool for tracking personal and professional milestones, available on iOS. **Why users hire it:** The app removes the cognitive friction of manual date calculation by providing a persistent, visual countdown for significant life events. ## App DNA (Features & Intent) - **[Differentiator] 10,000 Year Date Range:** Calculates countdowns from 1 AD to 9999 AD. - **[Differentiator] Biometric Security:** Locks app access via Face ID or Touch ID. * *User Intent:* Users prioritize data protection and trust in the platform. - **[Standard] iCity Cloud Sync:** Synchronizes event data across platforms. * *User Intent:* Users expect seamless access across multiple devices. ## Market Position {#market-position} 倒数日 · Days Matter maintains a stable presence in the productivity category, ranking #10 Free in its primary market. The consistent chart performance over a 15-year period indicates a high level of brand recognition and user loyalty within its niche. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free base version, Premium subscription at CNY ¥3/month - **Analysis:** Freemium model anchored at a low-cost monthly subscription, gating privacy features like biometric locks. ## 🟢 User Sentiment (High Confidence: 62 of 353 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.84/5 - **Platform Split:** iOS 4.8/5 (8K ratings) - **Overall Sentiment:** Excited ### Top Praises - **Long-term users value the consistent utility of tracking important life milestones and anniversaries** - **Clean interface design and widget support provide a frictionless experience for daily date tracking** ### Top Complaints (Impact Areas) - **Recent updates caused critical widget failures and disappearance of existing home screen configurations** ## SWOT Analysis {#swot} **Core Strengths:** - 10,000-year date range provides a defensible utility barrier - Deep Lunar calendar integration serves specific cultural needs **Growth Levers:** - Year-based display units would improve readability for long-duration events ## Recent Changes (v7 → v8) {#recent-changes} The app's market position shifted from #8 to #10 in the Chinese productivity category, accompanied by a pivot in the outlook narrative from a focus on immediate churn risk to an emphasis on 15 years of brand longevity. **Overall trend**: Stable **Compared at**: 2026-11-13 ### High-impact changes - **[Shifted] Category Rank Adjustment** (positioning) - **[Shifted] Outlook Narrative Pivot** (positioning) ### Medium-impact changes - **[Shifted] SWOT Item Reclassification** (swot) - **[Improved] Opportunity Refinement** (swot) - **[Added] New Engineering Priority** (swot) ## What's New - **Latest (v5.1, 2 weeks ago):** Added 'Countdown Video' templates, 'All Notes' overview, 'Countdown Notes' for event details, and a 'Countdown Calendar' view. ## App Momentum (Maintenance) {#momentum} - Shipped calendar view and video templates. - Maintains consistent top-tier category ranking. > **Cadence:** 1 total versions · 1 majors in last 6 months · 20 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} 倒数日 · Days Matter is a market-leading productivity app that is free with in-app purchases. With a 4.84/5 rating from 8K reviews, it delivers strong user satisfaction. > **Bottom Line:** Maintaining the current widget reliability is the primary lever for 倒数日 · Days Matter, as the app's retention relies on high-visibility home screen placement. Prioritizing stability over new feature expansion will protect the existing user base from churn while the team addresses synchronization gaps. **Best for:** Users seeking to track personal milestones, anniversaries, and work deadlines with support for both Gregorian and Lunar calendars. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Rebuild widget logic because recent updates caused critical failures and disappearance of configurations → restore daily active habit ### Feature Gaps vs Competitors - Year-based countdown display (requested by users but currently missing) ### Outlook: Mixed The productivity market for milestone tracking is consolidating, with 倒数日 · Days Matter holding a stable lead despite recent technical regressions. The app's ability to retain its #10 category rank suggests that core utility remains high, but the team must address widget stability to prevent long-term churn. - 🔴 Recent widget regressions (failing configurations) erode the daily active habit, which compounds the frustration already visible in user reviews. - 🟢 The latest release introduced new video templates and calendar views, signaling that the developer is still actively investing in feature expansion. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.84/5 | | Total Reviews | 8K | | Sentiment | Excited (85/100) | | Confidence | High | | Pricing Model | Freemium | | Platforms | iOS | | Key Features | 3 analyzed | | Trend | Stable | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **倒数日 · Days Matter** (this app) | 4.84/5 | Excited | iDaily Corp. | | [ClevCalc - Calculator](https://marlvel.ai/apps/clevcalc-calculator-1) | 4.7/5 | Excited | Cleveni Inc. | | [HitWave](https://marlvel.ai/apps/ciendor-applications-hitwave) | 2.5/5 | Mixed | Ciendor Holdings Corp. LTD | | [ChatGPT](https://marlvel.ai/apps/chatgpt) | 4.8/5 | n/a | OpenAI OpCo, LLC | | [VPN 360: Fast & Secure Proxy](https://marlvel.ai/apps/co-infinitysoft-vpn360) | 4.5/5 | Mixed | Pango GmbH | | [VPN - Super Unlimited Proxy](https://marlvel.ai/apps/vpn-super-unlimited-proxy) | 4.7/5 | Thrilled | Mobile Jump Pte Ltd | ## Company Profile - **Developer:** iDaily Corp. - **Website:** [https://daysmatter.com](https://daysmatter.com) ## Data Sources & Links - **App Store ID:** 406170251 - **Dev Site:** [Official Website](https://daysmatter.com) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## Related Intel Reports - [*ClevCalc - Calculator*](https://marlvel.ai/apps/clevcalc-calculator-1) (Cleveni Inc.) · 4.7/5 Rating | Positive Sentiment - [*HitWave*](https://marlvel.ai/apps/ciendor-applications-hitwave) (Ciendor Holdings Corp. LTD) · 2.5/5 Rating - [*ChatGPT*](https://marlvel.ai/apps/chatgpt) (OpenAI OpCo, LLC) · 4.8/5 Rating - [*VPN 360: Fast & Secure Proxy*](https://marlvel.ai/apps/co-infinitysoft-vpn360) (Pango GmbH) · 4.5/5 Rating - [*VPN - Super Unlimited Proxy*](https://marlvel.ai/apps/vpn-super-unlimited-proxy) (Mobile Jump Pte Ltd) · 4.7/5 Rating | Excellent Sentiment - [*Bookmarks - Send To Self*](https://marlvel.ai/apps/bookmarks-send-to-self) (GILI) · 4.4/5 Rating | Positive Sentiment - [*Clean Swell*](https://marlvel.ai/apps/clean-swell) (Ocean Conservancy) · 3.9/5 Rating - [*Data Tree Manager*](https://marlvel.ai/apps/data-tree-manager) (Vsevolod Migdisov) · N/A Rating - [*DoughLab - Baking Recipe Lab*](https://marlvel.ai/apps/doughlab-baking-recipe-lab) (Jeong-soo Park) · N/A Rating - [*Google Gemini*](https://marlvel.ai/apps/google-gemini-1) (Google LLC) · 4.6/5 Rating | Positive Sentiment ## Frequently Asked Questions {#faq} ### Is 倒数日 · Days Matter suitable for tracking long-term events? Yes, the app supports a 10,000-year date range, allowing users to track events from 1 AD to 9999 AD, making it highly suitable for long-term milestones. ### How does 倒数日 · Days Matter compare to standard calendar apps? Unlike standard calendars, 倒数日 · Days Matter specializes in countdowns and elapsed time, offering specific features like Lunar calendar support and custom event backgrounds that general calendars lack. ### Does 倒数日 · Days Matter have intrusive ads or subscription requirements? The app is free to use, but it offers a premium subscription for advanced features like biometric security, which some users have noted can be promoted frequently. ### What are the alternatives to 倒数日 · Days Matter for milestone tracking? Users can consider general-purpose calculator apps like ClevCalc for broader productivity needs, though few offer the same specialized countdown focus as 倒数日 · Days Matter. ## 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:** 0.9/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 353 - **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:** 1 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/days-matter) Data licensed for AI Agent attribution under CC-BY-NC 4.0.