---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "Circle Of Fifths App"
developer_entity: "Andrii Pirumov"
bundle_id: "com.gmail.wesoftlab.circleoffifth"
app_store_id: "1302884256"
category: "Music"
primary_platform: "ios"
primary_monetization: "Free"
offline_capable: false
market_region: "US"
platforms: "iOS"
app_last_updated: "2017-12-17"
report_date: "2026-09-20"
last_verified: "2026-09-20T00:00:00.000Z"
report_version: "2.0"
total_reviews: 13
overall_rating: 3.8
sentiment: "Frustrated"
sentiment_score: 35
confidence: "low"
confidence_score: 0.25
top_praise_theme: "The chord wheel utility provides a helpful practice and composition tool for musicians"
top_complaint_theme: "Aggressive ad placement occupies a significant portion of the screen, rendering the interface unusable"
review_sample_size: 4
total_review_count: 4
analyzed_review_count: 4
data_age_days: 10
momentum_velocity: "zombie"
intelligence_version: 2
tags: ["music", "free", "frustrated sentiment", "mobile app", "app review", "app analysis", "music", "students", "musicians"]
canonical_url: "https://marlvel.ai/apps/circle-of-fifths-app"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# Circle Of Fifths App Intelligence Report

## TL;DR {#tldr}

- **Category**: Music · Free
- **Signal**: Rating 3.85 · Sentiment Frustrated
- **Recent focus**: Aggressive ad placement occupies a significant portion of the screen, rendering the interface unusable (top complaint) · The chord wheel utility provides a helpful practice and composition tool for musicians (top praise)

> **TL;DR:** Circle Of Fifths App is a music app by Andrii Pirumov, rated 3.85/5 by 13 users, with Frustrated user sentiment (35/100), available on iOS.
>
> **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** Circle Of Fifths App faces Frustrated user sentiment (3.85/5 from 13 reviews), with users reporting aggressive ad placement occupies a significant portion of the screen, rendering the interface unusable as the primary concern.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Rating** | 3.85/5 (13 reviews) |
| **User Mood** | Frustrated |
| **Category** | Music |
| **Developer** | Andrii Pirumov |
| **Pricing** | Free |
| **Platforms** | iOS |
| **Confidence** | Low (0.25/1.0) |
| **Data Age** | 10d |

## Metadata & Market Performance
- **Publisher:** Andrii Pirumov
- **Category:** Music
- **Target Audience:** Music students and musicians requiring a reference tool for music theory and key signatures.
- **Platforms:** iOS
- **Version Reviewed:** 2.0
- **Report Date:** 2026-09-20
- **Signal Count:** 4 reviews analyzed
- **Confidence:** Low (0.25/1.0)
- **App Store ID (iOS):** 1302884256
- **Bundle ID:** com.gmail.wesoftlab.circleoffifth
- **Data Window:** Analysis based on signals collected up to 2026-09-20

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** Circle Of Fifths App is a music theory reference tool for iOS that visualizes the chromatic scale and key signatures.
**Why users hire it:** The app serves as a quick-reference diagram for students and musicians, displacing the need for physical paper-based theory wheels.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Standard] Circle of Fifths Visualization:** Interactive diagram displaying the relationship between the 12 tones of the chromatic scale, key signatures, and major/minor keys.
- **[Standard] Key Signature Reference:** Clockwise navigation for sharp keys and counter-clockwise navigation for flat keys.
<!-- /section:features -->

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

Circle Of Fifths App maintains a 3.85-star rating across 13 total lifetime ratings. The lack of any feature updates since 2017 signals a complete absence of competitive positioning in the modern music education space.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Free
- **Tiers:** Free
- **Analysis:** The app is distributed as a free utility with no observable monetization or in-app purchase gates, relying entirely on ad inventory.

<!-- section:sentiment -->
## 🔴 User Sentiment (Low Confidence: 4 of 4 reviews analyzed) {#user-sentiment}
- **Overall Rating:** 3.85/5
- **Platform Split:** iOS 3.8/5 (13 ratings)
- **Overall Sentiment:** Frustrated

### Top Praises
- **The chord wheel utility provides a helpful practice and composition tool for musicians**

### Top Complaints (Impact Areas)

- **Aggressive ad placement occupies a significant portion of the screen, rendering the interface unusable**

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

**Core Strengths:**
- Interactive chord wheel provides a functional reference for music theory

**Growth Levers:**
- Adding MIDI or audio playback would differentiate the tool
- Implementing a premium ad-free tier could monetize the user base


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

- **Latest (v2.0, 8 years ago):** General bug fixes and stability improvements.
<!-- /section:whats-new -->

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

- No feature updates since 2017.
- Maintenance-only status for 8 years.

> **Cadence:** 1 total versions · 0 majors in last 6 months · 3198 days since last update

<!-- /section:momentum -->

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

Circle Of Fifths App is a music app that is completely free.
It holds a 3.85/5 rating from 13 reviews.

<!-- speakable-start -->
> **Bottom Line:** Circle Of Fifths App is a legacy utility that no longer meets modern usability standards. Sunset the product to avoid further negative sentiment, as the 8-year lack of investment makes competitive recovery impossible.
<!-- speakable-end -->

**Best for:** Music students and musicians requiring a reference tool for music theory and key signatures.

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

- [ ] [SUNSET] Sunset the product because the 8-year maintenance gap and negative sentiment indicate no path to viability → reduce brand drag
<!-- /section:pm-actions -->

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

The music theory utility market is consolidating around apps that provide interactive audio-visual feedback and frequent content updates. Circle Of Fifths App remains stagnant, and the lack of investment signals that it will continue to lose relevance to active, modern competitors.

- 🔴 The 8-year development hiatus confirms a maintenance-only posture, which guarantees further erosion of the user base as modern devices outpace the interface.
<!-- /section:outlook -->

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

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

| Metric | Value |
| :--- | :--- |
| Overall Rating | 3.85/5 |
| Total Reviews | 13 |
| Sentiment | Frustrated (35/100) |
| Confidence | Low |
| Pricing Model | Free |
| Platforms | iOS |
| Key Features | 2 analyzed |
| Outlook | Declining |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **Circle Of Fifths App** (this app) | 3.85/5 | Frustrated | Andrii Pirumov |
| [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:** Andrii Pirumov

## Data Sources & Links
- **App Store:** [View on Apple Store](https://apps.apple.com/us/app/circle-of-fifths-app/id1302884256?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
- [*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 Circle Of Fifths App suitable for beginners?

Yes, it provides a basic visual reference for key signatures and the chromatic scale, though users report that the interface is difficult to read on modern phones.

### Does Circle Of Fifths App have audio playback?

No, the app does not produce sound, which is a common complaint among users looking for an interactive learning experience.

### What is a free alternative to Circle Of Fifths App?

There are many active music theory apps on the App Store that offer audio playback and better interface scaling, though specific recommendations depend on your device.

## 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:** 0.25/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 4
- **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:** 10 days since last refresh

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