---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "Chord Progress Album"
developer_entity: "Daishi Nakamura"
bundle_id: "com.nakapp.ChordProgressionAlbum"
app_store_id: "1484461659"
category: "Music"
primary_platform: "ios"
primary_monetization: "Free"
offline_capable: false
market_region: "US"
platforms: "iOS"
app_last_updated: "2019-11-22"
report_date: "2026-09-02"
last_verified: "2026-09-02T00:00:00.000Z"
report_version: "1.1"
total_reviews: 1
overall_rating: 5
sentiment: "Thrilled"
sentiment_score: 90
confidence: "low"
confidence_score: 0.3
top_praise_theme: "The application provides a satisfying user experience that keeps individuals engaged during their daily mobile sessions"
review_sample_size: 1
total_review_count: 1
analyzed_review_count: 1
data_age_days: 29
momentum_velocity: "zombie"
intelligence_version: 3
tags: ["music", "free", "thrilled sentiment", "mobile app", "app review", "app analysis", "songwriters", "musicians", "mobile"]
canonical_url: "https://marlvel.ai/apps/chord-progress-album"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# Chord Progress Album Intelligence Report

## TL;DR {#tldr}

- **Category**: Music · Free
- **Signal**: Rating 5 · Sentiment Thrilled
- **Recent focus**: The application provides a satisfying user experience that keeps individuals engaged during their daily mobile sessions (top praise)

> **TL;DR:** Chord Progress Album is a music app by Daishi Nakamura, rated 5/5 by 1 users, with Thrilled user sentiment (90/100), available on iOS.
>
> **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** Chord Progress Album maintains Thrilled user sentiment (5/5 from 1 review), with users consistently praising the application provides a satisfying user experience that keeps individuals engaged during their daily mobile sessions.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 5/5 (1 review) |
| **User Mood** | Thrilled |
| **Category** | Music |
| **Developer** | Daishi Nakamura |
| **Pricing** | Free |
| **Platforms** | iOS |
| **Confidence** | Low (0.3/1.0) |
| **Data Age** | 29d |

## Metadata & Market Performance
- **Publisher:** Daishi Nakamura
- **Category:** Music
- **Target Audience:** Songwriters and musicians who need a mobile tool to store and transpose chord progressions during the composition process.
- **Platforms:** iOS
- **Version Reviewed:** 1.1
- **Report Date:** 2026-09-02
- **Signal Count:** 1 review analyzed
- **Confidence:** Low (0.3/1.0)
- **App Store ID (iOS):** 1484461659
- **Bundle ID:** com.nakapp.ChordProgressionAlbum
- **Performance Trend:** Declining
- **Data Window:** Analysis based on signals collected up to 2026-09-02

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** Chord Progress Album is a mobile chord progression memo and transposition utility for songwriters on iOS.
**Why users hire it:** The application removes the manual friction of transposing chords between keys during the early stages of song composition.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Differentiator] Key Transposition:** Swiping gesture shifts all chords in a progression to a different musical key.
  * *User Intent:* Users seek enhanced value through premium features.
- **[Standard] Chord Progression Memo:** Storage for user-defined chord sequences for song composition.
  * *User Intent:* Users seek enhanced value through premium features.
- **[Standard] Audio Playback:** Audible playback of stored chord progressions for composition reference.
  * *User Intent:* Users seek enhanced value through premium features.
<!-- /section:features -->

<!-- section:market-position -->
## Market Position {#market-position}

Chord Progress Album maintains a niche position as a free, static utility for musicians. With no updates in over 2,400 days, the application relies entirely on its core transposition mechanism to provide value.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Free
- **Tiers:** Free
- **Analysis:** Chord Progress Album is distributed as a free utility without visible monetization gates.

<!-- section:sentiment -->
## 🟢 User Sentiment (Low Confidence: 1 of 1 review analyzed) {#user-sentiment}
- **Overall Rating:** 5/5
- **Platform Split:** iOS 5.0/5 (1 ratings)
- **Overall Sentiment:** Thrilled

### Top Praises
- **The application provides a satisfying user experience that keeps individuals engaged during their daily mobile sessions**

<!-- /section:sentiment -->
<!-- section:swot -->
## SWOT Analysis {#swot}

**Core Strengths:**
- Gesture-based transposition mechanism enables rapid key experimentation

**Growth Levers:**
- Cloud-sync integration could address the current lack of multi-device support


<!-- /section:swot -->
## Recent Changes (v2 → v3) {#recent-changes}

The outlook trend for Chord Progress Album has shifted from stable to declining, as the six-year development hiatus is now categorized as an indicator of an abandoned product rather than a static utility.

**Overall trend**: Declining
**Compared at**: 2026-09-02

### High-impact changes
- **[Declined] Outlook Trend Downgrade** (positioning)

### Medium-impact changes
- **[Shifted] SWOT Refinement** (swot)

<!-- section:whats-new -->
## What's New

- **Latest (v1.1, 6 years ago):** Expanded app localization by adding support for additional languages.
<!-- /section:whats-new -->

<!-- section:momentum -->
## App Momentum (Zombie) {#momentum}

- Dormant since November 2019.
- No feature updates in six years.

> **Cadence:** 1 total versions · 0 majors in last 6 months · 2475 days since last update

<!-- /section:momentum -->

<!-- section:so-what -->
## The "So What?" (Strategic Takeaway) {#so-what}

Chord Progress Album is a music app that is completely free.
It holds a 5/5 rating from 1 review.

<!-- speakable-start -->
> **Bottom Line:** Chord Progress Album provides a functional transposition utility, but the lack of updates since 2019 leaves it vulnerable to modern competitors. Maintaining the current state risks total user attrition as mobile composition workflows shift toward cloud-integrated platforms.
<!-- speakable-end -->

**Best for:** Songwriters and musicians who need a mobile tool to store and transpose chord progressions during the composition process.

<!-- section:pm-actions -->
### PM Action Plan (Next Best Moves)

- [ ] [MAINTAIN] Audit codebase for modern iOS compatibility because the last update occurred in 2019 → ensure baseline functionality
<!-- /section:pm-actions -->

<!-- section:outlook -->
### Outlook: Declining

The mobile music composition market is consolidating around cloud-first, multi-platform tools that offer real-time collaboration. Chord Progress Album remains static, which will lead to a gradual decline in relevance as users migrate to tools that support their evolving, multi-device workflows.

- 🔴 The six-year development hiatus signals an abandoned product, which erodes user trust in the app's long-term reliability for storing creative work.
<!-- /section:outlook -->

<!-- /section:so-what -->

<!-- section:metrics -->
## Key Metrics Summary

| Metric | Value |
| :--- | :--- |
| Overall Rating | 5/5 |
| Total Reviews | 1 |
| Sentiment | Thrilled (90/100) |
| Confidence | Low |
| Pricing Model | Free |
| Platforms | iOS |
| Key Features | 3 analyzed |
| Trend | Declining |
| Outlook | Declining |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **Chord Progress Album** (this app) | 5/5 | Thrilled | Daishi Nakamura |
| [SyncTimer - Ensemble Stopwatch](https://marlvel.ai/apps/synctimer-ensemble-stopwatch) | 5.0/5 | Thrilled | Sebastian Suarez-Solis |
| [BandLab – Music Maker & Beats](https://marlvel.ai/apps/bandlab-music-maker-beats) | 4.8/5 | n/a | BandLab Singapore Pte Ltd |
| [Suno - AI Songs, Music, Lyrics](https://marlvel.ai/apps/suno-ai-songs-music) | 4.0/5 | Mixed | Suno, Inc. |
| [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. |

## Company Profile
- **Developer:** Daishi Nakamura

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/us/app/chord-progress-album/id1484461659?uo=4)
- **Sources:** 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
- [*BandLab – Music Maker & Beats*](https://marlvel.ai/apps/bandlab-music-maker-beats) (BandLab Singapore Pte Ltd) · 4.8/5 Rating
- [*Suno - AI Songs, Music, Lyrics*](https://marlvel.ai/apps/suno-ai-songs-music) (Suno, Inc.) · 4.0/5 Rating
- [*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

## Frequently Asked Questions {#faq}

### Is Chord Progress Album still being updated?

No, the application has not received an update since November 2019, indicating that it is currently in a maintenance-only or abandoned state.

### Does Chord Progress Album require a subscription?

No, Chord Progress Album is distributed as a free utility without any subscription tiers or visible monetization gates.

### What is the main advantage of using Chord Progress Album?

The primary advantage is the gesture-based transposition feature, which allows users to shift entire chord progressions across keys with a single swipe.

## 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:** 1
- **Data Sources:** user reviews, 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:** 29 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/chord-progress-album)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.