--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Chord chart editor" developer_entity: "Maiko Narita" bundle_id: "com.fumenbook" app_store_id: "1511784636" category: "Music" primary_platform: "ios" primary_monetization: "Free" offline_capable: true market_region: "US" platforms: "iOS" app_last_updated: "2024-10-27" report_date: "2026-09-17" last_verified: "2026-09-17T00:00:00.000Z" report_version: "1.6.0" total_reviews: 5 overall_rating: 2.4 sentiment: "Frustrated" sentiment_score: 25 confidence: "medium" confidence_score: 0.45 top_praise_theme: "Simple chord chart creation tools provide utility for musicians drafting arrangements for band mates" top_complaint_theme: "Lack of save, export, or print functionality renders the app useless for preserving creative work" review_sample_size: 2 total_review_count: 2 analyzed_review_count: 2 data_age_days: 13 momentum_velocity: "zombie" intelligence_version: 2 tags: ["music", "free", "frustrated sentiment", "mobile app", "app review", "app analysis", "session", "musicians,", "performers,"] canonical_url: "https://marlvel.ai/apps/chord-chart-editor" license: "CC-BY-NC 4.0" content_version: "v2" --- # Chord chart editor Intelligence Report ## TL;DR {#tldr} - **Category**: Music · Free - **Signal**: Rating 2.4 · Sentiment Frustrated - **Recent focus**: Lack of save, export, or print functionality renders the app useless for preserving creative work (top complaint) · Simple chord chart creation tools provide utility for musicians drafting arrangements for band mates (top praise) > **TL;DR:** Chord chart editor is a music app by Maiko Narita, rated 2.4/5 by 5 users, with Frustrated user sentiment (25/100), available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Chord chart editor faces Frustrated user sentiment (2.4/5 from 5 reviews), with users reporting lack of save, export, or print functionality renders the app useless for preserving creative work as the primary concern. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 2.4/5 (5 reviews) | | **User Mood** | Frustrated | | **Category** | Music | | **Developer** | Maiko Narita | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Medium (0.45/1.0) | | **Data Age** | 13d | ## Metadata & Market Performance - **Publisher:** Maiko Narita - **Category:** Music - **Target Audience:** Session musicians, jazz performers, and gigging artists who need a portable, offline-capable tool for managing chord charts. - **Platforms:** iOS - **Version Reviewed:** 1.6.0 - **Report Date:** 2026-09-17 - **Signal Count:** 2 reviews analyzed - **Confidence:** Medium (0.45/1.0) - **App Store ID (iOS):** 1511784636 - **Bundle ID:** com.fumenbook - **Data Window:** Analysis based on signals collected up to 2026-09-17 ## Executive Snapshot **What it is:** Chord Chart Editor is a music notation tool for session musicians to create and view chord charts using a custom markup language on iOS. **Why users hire it:** The tool removes the friction of GUI-based notation for session musicians who need to draft and transpose harmonies quickly during live rehearsals or performances. ## App DNA (Features & Intent) - **[Differentiator] Fumen Markup Language:** Text-based syntax for chord chart creation that allows faster input than GUI-based alternatives. - **[Differentiator] Offline Mode:** Local storage of chord charts for viewing and editing without an active internet connection. * *User Intent:* Users want uninterrupted access without internet dependency. - **[Standard] Cloud Sync:** Cross-platform synchronization of scores between mobile app and web browser clients. * *User Intent:* Users expect seamless access across multiple devices. ## Market Position {#market-position} Chord Chart Editor occupies a niche for markup-based notation, but its 2.4-star rating across 5 reviews signals a failure to meet basic user expectations. The lack of updates for over 23 months further isolates the product from the broader music notation market. ## Monetization Strategy - **Model:** Free - **Tiers:** Free access to all features - **Analysis:** The app operates as a free tool requiring user login for cloud storage, with no visible paid tiers or subscription gates. ## 🔴 User Sentiment (Medium Confidence: 2 of 2 reviews analyzed) {#user-sentiment} - **Overall Rating:** 2.4/5 - **Platform Split:** iOS 2.4/5 (5 ratings) - **Overall Sentiment:** Frustrated ### Top Praises - **Simple chord chart creation tools provide utility for musicians drafting arrangements for band mates** ### Top Complaints (Impact Areas) - **Lack of save, export, or print functionality renders the app useless for preserving creative work** ## SWOT Analysis {#swot} **Core Strengths:** - Markup language syntax enables faster input than GUI-based alternatives **Growth Levers:** - Implementing a local-first save mechanism would resolve the primary churn driver ## What's New - **Latest (v1.6.0, 1 years ago):** Added support for fumen v1.3.3, enabling syncopation and chord symbol display above the staff. ## App Momentum (Zombie) {#momentum} - Ships no updates for 23 months. - Maintains zero feature expansion. > **Cadence:** 1 total versions · 1 majors in last 6 months · 689 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Chord chart editor is a music app that is completely free. It holds a 2.4/5 rating from 5 reviews. > **Bottom Line:** Implementing a local-first save mechanism would resolve the primary churn driver, as the current lack of persistence prevents any professional utility. If the developer cannot restore basic file preservation, the tool will remain a non-viable drafting prototype for session musicians. **Best for:** Session musicians, jazz performers, and gigging artists who need a portable, offline-capable tool for managing chord charts. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Ship local-first save mechanism because users report charts disappear without it → unlock basic usability ### Outlook: Declining Users report: The music notation market is shifting toward stable, cloud-integrated platforms that prioritize data persistence. Chord Chart Editor is currently exposed, as its failure to support basic saving mechanisms makes it a non-starter for professional session musicians. - 🔴 The 23-month release silence indicates the product is in maintenance mode, which prevents the resolution of critical save-data bugs. - 🔴 Persistent user reports of disappearing charts erode trust, ensuring that even the efficient markup syntax cannot retain the user base. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 2.4/5 | | Total Reviews | 5 | | Sentiment | Frustrated (25/100) | | Confidence | Medium | | Pricing Model | Free | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Declining | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Chord chart editor** (this app) | 2.4/5 | Frustrated | Maiko Narita | | [SyncTimer - Ensemble Stopwatch](https://marlvel.ai/apps/synctimer-ensemble-stopwatch) | 5.0/5 | Thrilled | Sebastian Suarez-Solis | | [ヨルシカ](https://marlvel.ai/apps/com-yorushika-sp) | 4.8/5 | N/A | Fanplus, Inc. | | [あいみょん](https://marlvel.ai/apps/net-aimyong-sp) | 4.5/5 | N/A | Fanplus, Inc. | | [イントリズム](https://marlvel.ai/apps/jp-rc-into-rhythm) | 3.5/5 | N/A | RedinC | | [クリープハイプ](https://marlvel.ai/apps/creephyp-sp-browsingapp) | N/A/5 | N/A | Fanplus, Inc. | ## Company Profile - **Developer:** Maiko Narita - **Website:** [https://fumenbook.com](https://fumenbook.com) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/chord-chart-editor/id1511784636?uo=4) - **Dev Site:** [Official Website](https://fumenbook.com) - **Sources:** Developer website content, App store metadata, User reviews. ## Related Intel Reports - [*SyncTimer - Ensemble Stopwatch*](https://marlvel.ai/apps/synctimer-ensemble-stopwatch) (Sebastian Suarez-Solis) · 5.0/5 Rating | Excellent Sentiment - [*ヨルシカ*](https://marlvel.ai/apps/com-yorushika-sp) (Fanplus, Inc.) · 4.8/5 Rating - [*あいみょん*](https://marlvel.ai/apps/net-aimyong-sp) (Fanplus, Inc.) · 4.5/5 Rating - [*イントリズム*](https://marlvel.ai/apps/jp-rc-into-rhythm) (RedinC) · 3.5/5 Rating - [*クリープハイプ*](https://marlvel.ai/apps/creephyp-sp-browsingapp) (Fanplus, Inc.) · N/A Rating - [*マカロニえんぴつ*](https://marlvel.ai/apps/com-macaroniempitsu-fc) (Fanplus, Inc.) · 3.1/5 Rating - [*100.1 Jack FM*](https://marlvel.ai/apps/100-1-jack-fm) (NRG Media) · 1.0/5 Rating - [*100.1 WJRZ*](https://marlvel.ai/apps/100-1-wjrz) (Beasley Broadcast Group) · 4.8/5 Rating | Excellent Sentiment - [*100.3 The Wolf*](https://marlvel.ai/apps/100-3-the-wolf) (SummitMedia, LLC) · 4.1/5 Rating - [*100.7 KIK-FM*](https://marlvel.ai/apps/100-7-kik-fm) (Hubbard Radio) · 4.3/5 Rating ## Frequently Asked Questions {#faq} ### Is Chord Chart Editor reliable for professional live performances? No. User reviews indicate that the app currently lacks a functional save or export mechanism, causing created charts to disappear and making it unsuitable for professional use. ### Does Chord Chart Editor support offline editing? Yes, the app is designed to allow viewing and editing of chord charts without an active internet connection, which is useful for venues with poor connectivity. ### What is the main advantage of using the Fumen markup language? The Fumen markup language allows musicians to write chord charts significantly faster than using GUI-based interfaces once they are familiar with the syntax. ## 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:** 0.45/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 2 - **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:** 13 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/chord-chart-editor) Data licensed for AI Agent attribution under CC-BY-NC 4.0.