---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "Piano Chords - Music theory"
developer_entity: "Deisy Renteria"
bundle_id: "com.deisyrenteapp.pianochords"
app_store_id: "1635837081"
category: "Music"
primary_platform: "ios"
primary_monetization: "Free"
offline_capable: false
market_region: "US"
platforms: "iOS"
app_last_updated: "2022-07-23"
report_date: "2026-09-02"
last_verified: "2026-09-02T00:00:00.000Z"
report_version: "1.0"
total_reviews: 1
overall_rating: 5
sentiment: "Thrilled"
sentiment_score: 90
confidence: "low"
confidence_score: 0.3
top_praise_theme: "The chord library provides a complete set of musical references without overwhelming the user interface"
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", "music", "students", "piano"]
canonical_url: "https://marlvel.ai/apps/piano-chords-music-theory"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# Piano Chords - Music theory Intelligence Report

## TL;DR {#tldr}

- **Category**: Music · Free
- **Signal**: Rating 5 · Sentiment Thrilled
- **Recent focus**: The chord library provides a complete set of musical references without overwhelming the user interface (top praise)

> **TL;DR:** Piano Chords - Music theory is a music app by Deisy Renteria, 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:** Piano Chords - Music theory maintains Thrilled user sentiment (5/5 from 1 review), with users consistently praising the chord library provides a complete set of musical references without overwhelming the user interface.
<!-- speakable-end -->

## Quick Facts

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

## Metadata & Market Performance
- **Publisher:** Deisy Renteria
- **Category:** Music
- **Target Audience:** Music students and piano players seeking a reference tool for music theory, chord construction, and scale compatibility.
- **Platforms:** iOS
- **Version Reviewed:** 1.0
- **Report Date:** 2026-09-02
- **Signal Count:** 1 review analyzed
- **Confidence:** Low (0.3/1.0)
- **App Store ID (iOS):** 1635837081
- **Bundle ID:** com.deisyrenteapp.pianochords
- **Performance Trend:** Stable
- **Data Window:** Analysis based on signals collected up to 2026-09-02

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** Piano Chords - Music Theory is a reference utility for piano students to visualize chord notes, scale degrees, and compatibility mappings on iOS.
**Why users hire it:** The app removes the cognitive friction of manual theory lookup by providing instant, visual chord and scale data without requiring a subscription.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Differentiator] Compatibility Mapping:** Generates lists of compatible chords for a selected scale or compatible scales for a selected chord.
- **[Differentiator] Progression Experimentation:** Allows users to test chord progressions using relative or common chords.
  * *User Intent:* Users seek enhanced value through premium features.
- **[Standard] Chord and Scale Visualization:** Displays notes and degrees for selected piano chords and scales.
<!-- /section:features -->

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

Piano Chords - Music Theory operates as a free, static reference utility in the Music category with a 5-star rating from a single review. The lack of updates since 2022 suggests a maintenance-only posture compared to active, subscription-based theory rivals.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Free
- **Tiers:** Free
- **Analysis:** The app is distributed as a free utility with no visible in-app purchases or subscription tiers.

<!-- 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 chord library provides a complete set of musical references without overwhelming the user interface**

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

**Core Strengths:**
- Compatibility mapping provides immediate composition utility

**Growth Levers:**
- Cloud-save integration for user-defined progressions


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

The app remains in a state of total stagnation, with no functional updates or shifts in its core utility. The primary change is a heightened focus on the risk of platform-level deprecation due to the ongoing 1,500-day update hiatus.

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

### High-impact changes
- **[Shifted] Threat Reclassification** (swot)

### Medium-impact changes
- **[Shifted] Strategic Positioning** (positioning)
- **[Shifted] FAQ Guidance** (features)

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

- Dormant for 1,500+ days.
- Last release July 2022.

> **Cadence:** 1 total versions · 1 majors in last 6 months · 1501 days since last update

<!-- /section:momentum -->

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

Piano Chords - Music theory is a music app that is completely free.
It holds a 5/5 rating from 1 review.

<!-- speakable-start -->
> **Bottom Line:** Piano Chords - Music Theory provides a stable, free reference for theory students, but the lack of updates since 2022 leaves it vulnerable to platform-level deprecation. A maintenance-only posture is appropriate until a clear path to monetization or feature expansion is identified.
<!-- speakable-end -->

**Best for:** Music students and piano players seeking a reference tool for music theory, chord construction, and scale compatibility.

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

- [ ] [MAINTAIN] Audit compatibility with latest iOS because the app has been dormant for 1,500 days → ensure core utility remains functional
<!-- /section:pm-actions -->

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

The music utility market is shifting toward subscription-based, interactive learning environments, leaving static reference tools like Piano Chords - Music Theory in a maintenance-only position. Without a roadmap for feature expansion or cloud-sync, the app will likely see gradual erosion as users migrate to platforms that support cross-device progression management.

- ⚪ The 1,500-day update gap signals a maintenance-only lifecycle, which limits the app's ability to compete with modern, feature-rich theory platforms.
- 🟢 High initial user satisfaction (5-star rating) confirms the core compatibility mapping utility remains relevant for the target audience.
<!-- /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 | Stable |
| Outlook | Stable |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **Piano Chords - Music theory** (this app) | 5/5 | Thrilled | Deisy Renteria |
| [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:** Deisy Renteria
- **Website:** [https://appdev.academiadeapps.com/](https://appdev.academiadeapps.com/)

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/us/app/piano-chords-music-theory/id1635837081?uo=4)
- **Dev Site:** [Official Website](https://appdev.academiadeapps.com/)
- **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 Piano Chords - Music Theory free to use?

Yes, Piano Chords - Music Theory is currently distributed as a free utility with no in-app purchases or subscription tiers.

### Does Piano Chords - Music Theory require an internet connection?

The app functions as a reference tool for chords and scales, but users should verify functionality on the latest iOS version as the app has not been updated since 2022.

### What is the best alternative to Piano Chords - Music Theory?

Users seeking more frequent updates or cloud-sync features should consider subscription-based music theory apps, which offer active development and cross-device progression tracking.

## 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/piano-chords-music-theory)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.