--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Duet: Shared Couples Calendar" developer_entity: "TSE JU LIN" bundle_id: "com.duet.duetcouple" app_store_id: "6503354460" category: "Lifestyle" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-09-14" report_date: "2026-09-18" last_verified: "2026-09-18T00:00:00.000Z" report_version: "2.2.7" total_reviews: 5 overall_rating: 4 sentiment: "Mixed" sentiment_score: 50 confidence: "medium" confidence_score: 0.55 top_complaint_theme: "Frequent application crashes during standard usage sessions disrupt the daily habit for active users" review_sample_size: 1 total_review_count: 1 analyzed_review_count: 1 data_age_days: 58 momentum_velocity: "active" intelligence_version: 2 tags: ["lifestyle", "free", "mixed sentiment", "mobile app", "app review", "app analysis", "couples", "looking", "coordinate"] canonical_url: "https://marlvel.ai/apps/duet-shared-couples-calendar" license: "CC-BY-NC 4.0" content_version: "v2" --- # Duet: Shared Couples Calendar Intelligence Report ## TL;DR {#tldr} - **Category**: Lifestyle · Free - **Signal**: Rating 4 · Sentiment Mixed - **Recent focus**: Frequent application crashes during standard usage sessions disrupt the daily habit for active users (top complaint) > **TL;DR:** Duet: Shared Couples Calendar is a lifestyle app by TSE JU LIN, rated 4/5 by 5 users, with Mixed user sentiment (50/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Duet: Shared Couples Calendar has Mixed user sentiment with a 4/5 rating from 5 reviews. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4/5 (5 reviews) | | **User Mood** | Mixed | | **Category** | Lifestyle | | **Developer** | TSE JU LIN | | **Pricing** | Free | | **Platforms** | iOS & Android | | **Confidence** | Medium (0.55/1.0) | | **Data Age** | 58d | ## Metadata & Market Performance - **Publisher:** TSE JU LIN - **Category:** Lifestyle - **Target Audience:** Couples looking to coordinate schedules, track relationship milestones, and manage shared wish lists in a single space. - **Platforms:** iOS & Android - **Version Reviewed:** 2.2.7 - **Report Date:** 2026-09-18 - **Signal Count:** 1 review analyzed - **Confidence:** Medium (0.55/1.0) - **App Store ID (iOS):** 6503354460 - **Bundle ID:** com.duet.duetcouple - **Google Play ID:** com.duet.duetcouple - **Data Window:** Analysis based on signals collected up to 2026-09-18 ## Executive Snapshot **What it is:** Duet is a shared calendar and wish-list application for couples, available on iOS and Android. **Why users hire it:** It removes the cognitive cost of manual scheduling by syncing two individual calendars into a single, shared view. ## App DNA (Features & Intent) - **[Standard] Shared Couples Calendar:** Synchronized calendar view for two linked accounts with support for recurring events and reminders. * *User Intent:* Users seek social connection and competitive engagement with peers. - **[Differentiator] Calendar Integration:** Read-only import of existing Google or Apple Calendar events into the shared interface. * *User Intent:* Users seek social connection and competitive engagement with peers. - **[Differentiator] Shared Wish Lists:** Collaborative lists for gifts, places, and plans with drag-to-reorder functionality. * *User Intent:* Users seek social connection and competitive engagement with peers. ## Market Position {#market-position} Duet occupies a niche in the Lifestyle category, focusing on relationship-specific utility rather than general productivity. The current 4-star rating on a small sample size (5 ratings total) indicates that the app has yet to achieve broad market validation. ## Monetization Strategy - **Model:** Free - **Tiers:** Free to download and use with all features included - **Analysis:** The app operates on a free model with no visible subscription or IAP gates, monetizing via ad inventory. ## 🟡 User Sentiment (Medium Confidence: 1 of 1 review analyzed) {#user-sentiment} - **Overall Rating:** 4/5 - **Platform Split:** iOS 4.0/5 (5 ratings) - **Overall Sentiment:** Mixed ### Top Complaints (Impact Areas) - **Frequent application crashes during standard usage sessions disrupt the daily habit for active users** ## SWOT Analysis {#swot} **Core Strengths:** - Shared calendar synchronization reduces churn by establishing a daily utility for couples **Growth Levers:** - Localized calendar date customization could resolve navigation friction for users struggling with the current interface ## What's New - **Latest (v2.2.7, 6 days ago):** Resolved calendar display errors and optimized overall application performance. ## App Momentum (Active) {#momentum} - Ships ~2 releases per month. - Resolved calendar display errors. > **Cadence:** 2 total versions · 0 majors in last 6 months · 6 days since last update · 13 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} Duet: Shared Couples Calendar is a lifestyle app that is completely free. It holds a 4/5 rating from 5 reviews. > **Bottom Line:** Duet's shared utility is currently undermined by technical instability, which prevents the app from becoming a reliable daily habit. Addressing core crashes and interface navigation errors would stabilize the user base and allow the shared-calendar mechanism to drive long-term retention. **Best for:** Couples looking to coordinate schedules, track relationship milestones, and manage shared wish lists in a single space. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Audit crash logs because frequent crashes during standard usage sessions disrupt the daily habit → improve retention ### Outlook: Mixed The shared-calendar market is consolidating around stable, high-frequency utilities, leaving Duet exposed due to its current technical instability. If the latest performance-focused updates do not resolve the reported crashes, the app will struggle to retain users against more reliable, established calendar alternatives. - 🔴 Frequent application crashes during standard operation erode the daily habit, which compounds the rating drag already visible in early user feedback. - ⚪ The latest release focuses on calendar display errors and performance, indicating that the developer is aware of the stability hurdles. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4/5 | | Total Reviews | 5 | | Sentiment | Mixed (50/100) | | Confidence | Medium | | Pricing Model | Free | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Duet: Shared Couples Calendar** (this app) | 4/5 | Mixed | TSE JU LIN | | [Amora: A Hint of Your Soulmate](https://marlvel.ai/apps/amora-a-hint-of-your-soulmate) | 4.6/5 | N/A | Lit Apps LLC (Mobile) | | [Find My Location: Tracker](https://marlvel.ai/apps/com-friendslocator) | 4.2/5 | n/a | DIGITS LTD | | [Journey - Diary, Journal](https://marlvel.ai/apps/com-journey-ios-app) | 4.6/5 | Excited | Two App Studio Pte. Ltd. | | [마주](https://marlvel.ai/apps/an-offline-network-where-you-meet-through-qr-codes) | N/A/5 | N/A | lvher | | [모앗](https://marlvel.ai/apps/moat-moatapp) | N/A/5 | N/A | JUNSEOK LEE | ## Company Profile - **Developer:** TSE JU LIN - **Website:** [https://teamduet.com/](https://teamduet.com/) - **Social:** [X/Twitter](https://twitter.com/duet_couple_app) ## Data Sources & Links - **App Store ID:** 6503354460 - **Google Play ID:** com.duet.duetcouple - **Dev Site:** [Official Website](https://teamduet.com/) - **Sources:** Developer website content, About us / company information, App store metadata, User reviews. ## Related Intel Reports - [*Amora: A Hint of Your Soulmate*](https://marlvel.ai/apps/amora-a-hint-of-your-soulmate) (Lit Apps LLC (Mobile)) · 4.6/5 Rating - [*Find My Location: Tracker*](https://marlvel.ai/apps/com-friendslocator) (DIGITS LTD) · 4.2/5 Rating - [*Journey - Diary, Journal*](https://marlvel.ai/apps/com-journey-ios-app) (Two App Studio Pte. Ltd.) · 4.6/5 Rating | Positive Sentiment - [*마주*](https://marlvel.ai/apps/an-offline-network-where-you-meet-through-qr-codes) (lvher) · N/A Rating - [*모앗*](https://marlvel.ai/apps/moat-moatapp) (JUNSEOK LEE) · N/A Rating - [*야기*](https://marlvel.ai/apps/tistory-88yhtserof-yagi) (Yunhwi Lim) · N/A Rating - [*책력*](https://marlvel.ai/apps/ryubi-chaengnyeok) (jeongrim oh) · N/A Rating - [*케챱*](https://marlvel.ai/apps/o2a-ketchup) (EUNHYE LEE) · N/A Rating - [*풋셀*](https://marlvel.ai/apps/app--635) (Pic&Go) · N/A Rating - [*캐라 - 고민 생각 기록*](https://marlvel.ai/apps/hara-kaera) (DAMIN KIM) · N/A Rating ## Frequently Asked Questions {#faq} ### Is Duet free to use? Yes, Duet is free to download and use with all features included, monetizing through ad inventory. ### Does Duet sync with my existing calendar? Yes, Duet supports read-only import of existing Google or Apple Calendar events into the shared interface. ### Is Duet reliable for daily scheduling? Users report frequent application crashes during standard usage sessions, which may impact reliability for daily scheduling needs. ## 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:** 0.55/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 1 - **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:** 58 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/duet-shared-couples-calendar) Data licensed for AI Agent attribution under CC-BY-NC 4.0.