55+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our circle of fifth harmony list covers 55+ iPhone apps updated through June 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 3.8★ (4) | No | No | Jul 2026 |
| 2 |  | Free | 4.9★ (53) | No | No | Jul 2026 |
| 3 |  | Free | 4.9★ (222) | No | No | Jul 2026 |
| 4 |  | Free was $9.99 | 4.8★ (6.3K) | No | Yes | Jul 2026 |
| 5 |  | Free | 4.8★ (9.1K) | No | Yes | Jul 2026 |
| 6 |  | $4.99 | — | No | No | Jul 2026 |
| 7 |  | Free | 5.0★ (3) | No | No | May 2026 |
| 8 |  | $3.99 | 4.8★ (23) | No | No | Jun 2026 |
This application helps musicians organize music chords into harmonically strong progressions. It serves as a tool for understanding and creating musical sequences.
Explore musical harmony with an interactive circle of fifths and fourths. Build melodies by selecting keys and scales, and generate proper chords. Play chords and arpeggios with the built-in player.
Explore music theory with a visual representation of the 12 keys. Understand scales, compose chord progressions, and mix in key. Features color-coded relationships, key signatures, and sounded chords for each key.
This app helps musicians of all levels write songs, find chords, and learn music theory. It offers tools for chord and scale practice, MIDI and PDF export, and collaboration features for songwriters and producers.
Explore chords, scales, and progressions to compose music. Visualize musical structures on a virtual piano and staff, with interactive tools and audio playback. Ideal for musicians of all levels seeking inspiration and understanding.
Explore all 12x7 diatonic scales interactively. This app displays and plays selected scales, offering various arrangements and views based on scale tones, fundamentals, brightness, or relationships. It allows for highlighting specific modes or freely selecting any scale.
This app provides an interactive reference for understanding music scales and jazz harmony. It allows users to hear, visualize, and manipulate scales to deepen their comprehension of musical concepts. Features include expert write-ups, practical usage tips, and animated transformations between scales.
Explore the relationships between musical keys and their key signatures. This app visually represents the circle of fifths, showing how sharps and flats change as you move through the chromatic scale.
This music theory app serves as a comprehensive chord and scale dictionary for musicians. It offers tools for building chord progressions, exploring the circle of fifths, and creating custom libraries. Users can find chords and scales by inputting keys or using a MIDI keyboard, with options for detailed analysis and audio playback.
This music theory app serves as a comprehensive chord and scale dictionary for musicians. It aids in finding chords and scales by inputting keys, offers a chord progression builder, and allows users to create and save custom chords and scales. Practice and explore musical concepts with interactive tools.
This app helps musicians understand music theory with a color-coded circle of fifths. It quickly identifies accidentals for scales and modes, and allows users to listen to various scales. A helpful guide is included to maximize its utility.
This app helps musicians learn, identify, and explore musical chords, scales, and contexts. It answers questions about note relationships, chord names, and scale variations, with MIDI interaction capabilities.
Learn music theory with an interactive Circle of Fifths. Explore major and minor scales, hear them played, and understand key relationships easily. This app simplifies complex musical concepts for quick learning.
This music theory app visually represents the relationship between the 12 tones of the chromatic scale. It shows key signatures and associated major and minor keys, illustrating sharps and flats as you move clockwise or counter-clockwise.
This app helps musicians quickly create chord progressions, arpeggios, and melodies for their songs. It allows for easy editing, arrangement of song sections, and export to DAWs as MIDI files.
Learn a unique roman numeral notation system for jazz harmony. View chord progressions with equivalent roman numerals and transpose them in real-time across all keys. Integrates with iReal Pro for advanced chart viewing.
This app generates chords for music production, offering universal DAW and MIDI controller compatibility. It features smart voicing, strumming effects, and key signature selection to enhance compositions.