Mode Circle is an interactive music theory tool for iOS that visualizes diatonic scales and modal relationships via a generalized circle of fifths.

The App DNA

What makes this app unique?

The app removes the cognitive friction of visualizing complex scale relationships, though the lack of interval data limits its utility for beginners.

For Music students and musicians seeking an interactive visual reference for diatonic scales and music theory.

What does it look like?

Key features

Interactive Circle of Fifthsedge

Visualizes 12x7 diatonic scales with interactive playback and root note shifting.

Multi-View Scale Arrangementsedge

Organizes 84 scales by tone, fundamental, degree, brightness, or fifth/semitone relationship.

Note Carpet Integrationedge

Links to the Note Carpet app for extended music theory workflows.

How much does it cost?

freeFree

The app is distributed as a free tool with no visible in-app purchases or subscription gates.

Velocity

Dormant developmentShow more...

The app has not received a store update in 1,105 days, indicating a complete cessation of development activity. There is no evidence of ongoing maintenance, feature expansion, or live operations. The project appears to be abandoned by its developer.

See all version history

Who built it?

Dr. Garbers Softwareentwicklung

5 apps tracked · Music

Musk MIDI PlayerMusk MIDI PlayerMIDI SolFa Mode-Go-RoundMIDI SolFa Mode-Go-RoundGuidonische HandGuidonische HandMusk MIDI KeyboardMusk MIDI Keyboard
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User Sentiment

What do users think recently?

Review voice lately leans mixed. Users appreciate educational tool helps musicians grasp complex musical modes and their relationships through a clear interface.

How are ratings & reviews evolving?

App Store
4.60 · 5

What users say, by theme

What Users Love
  • Educational tool helps musicians grasp complex musical modes and their relationships through a clear interface
What Frustrates Users
  • Lack of major and minor interval displays prevents novice musicians from using the app effectively

2 of 2 recent reviews analyzed · limited sample

Read the full review analysis

Competition

Competitive landscape for Mode Circle

How's the Music market?

Mode Circle holds a 4.6-star rating across 5 total ratings on the iOS platform. The lack of updates for over 1,100 days signals a maintenance-only posture that limits its competitive standing.

The rivals identified

The Analyst's Read

Key takeaways for Mode Circle

Where is it heading?

The music theory tool market is consolidating around apps with frequent live-ops and comprehensive interval training. Mode Circle's maintenance-only status leaves it exposed to rivals that offer a more complete educational path, which will likely lead to a decline in new-user acquisition.

  • The three-year development gap signals a maintenance-only posture, which erodes the app's ability to compete against frequently updated music theory tools.
  • The core visualization remains a useful educational resource, but it requires fundamental interval data to remain relevant for novice musicians.

The SWOT

Core Strengths
  • Interactive circle of fifths visualization clarifies complex modal relationships
Critical Frictions 1 weakness inside
Growth Levers
  • Adding fundamental interval data would lower the barrier for novice learners
Market Threats 1 threat identified

Next best moves

1 Invest

Ship major and minor interval displays because it is the top-requested missing feature for novices → increase user retention

The counter-intuitive read

The app's three-year silence is its biggest asset: it provides a stable…

Read the full take

Bottom line

The clear visualization of modal relationships provides value, but the three-year development gap and missing interval data limit its reach. Adding fundamental interval displays would unlock the novice segment and address the primary churn driver.

Unlock 1 critical friction, 1 market threat and the analyst’s take.

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FAQ

Is Mode Circle suitable for beginners?
While the app provides a clear visual reference for modal relationships, users report that the lack of major and minor interval displays makes it difficult for beginners to use effectively.
Does Mode Circle have a paid version?
No, Mode Circle is currently distributed as a free tool with no in-app purchases or subscription gates.
What is the difference between Mode Circle and other theory apps?
Mode Circle focuses specifically on visualizing 12x7 diatonic scales via an interactive circle of fifths, whereas other theory apps often include broader interval training and ear-training exercises.

Sources

  1. [1] App Store, source

Report last updated

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Mode Circle, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Mode Circle Intelligence Report.” Updated Sep 20, 2026. https://marlvel.ai/apps/mode-circle

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