Chordio+ vs Audonia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chordio+
This music creation and learning tool offers an interactive way to explore chords and scales. It helps users compose songs, store progressions, and connect MIDI controllers for real-time feedback. Ideal for musicians, composers, and educators seeking to enhance their music theory knowledge and creative output.
- Build chord progressions with a sequencer
- Chord and scale exploration modes
- MIDI controller integration
- Custom chord creation and editing
- Export MIDI to DAWs
- Learn songs with adjustable speed and pitch
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Looking for a spark for your upcoming song or unsure about the names of chords to communicate with fellow musicians? Introducing Chordio+, a powerful tool for composition and music theory that offers an enjoyable and interactive experience. This app allows you to explore chords and scales in a fun and engaging way. It also provides a convenient platform for storing all your distinctive musical chord progressions in a single location. As a result, Chordio becomes an indispensable resource for contemporary music producers, composers, and educators. Take your music theory knowledge to the next level and create innovative chord progressions for your latest composition. With a range of internal sounds included, you can explore the tool's features without needing any other external equipment. Connect your MIDI controller to Chordio+ and see chord names appear on the Grand Staff in real-time as you play. Solo over chord progressions using the built-in sounds, and quickly rearrange or transpose chord progressions on the fly for added flexibility. Chordio+ empowers you to unleash your creativity and take your music to another level. The main features are divided into four workspaces: Composition • Build-in sequencer to create chord progressions. • Build-in Chord progression generator. • Create custom chords, edit existing chords, get chord inversions, and extended chords. • Drag & Drop to change the song structure. • Transpose the entire chord progression with a single tap. • Create a playlist of custom chord progressions. • A Chord Types & Voicings panel helps you generate new chords. • Play-along with a backing rhythm track. • Save/load songs, export it as MIDl to your favourite DAW. • Download chord progressions from a growing collection of Chord Packs. • Features a chord transformer that allows you to easily substitute a selected chord with a suggested alternative. Modes • Interactive way to learn what scales are associated with each mode. • Practice modes in Chordio+. • Change tonic, mode, and layout to discover the relationship between musical notes, chords, and scales. Scales • Practice scales with a metronome in all keys. • Contains more than 40 scales you can work with. • Staff view for chords and scales. • Tap on scale notes to show their corresponding intervals. Lessons • Learn to play songs at your own pace. • Download music from a growing collection of Lesson Packs. • Lessons can be slowed down or pitch changed. KEY FEATURES: • MIDI keyboard support. • Build progressions using the chord generators. • Export MIDI to your DAW or sequencer. • Custom chords, edit existing chords, get extended chords. • Play internal sounds. • Arpeggio, strum and performance modes. • Mac version include a detachable resizable Grand Staff, Chord Display, and Keyboard Views. • Customise the Keyboard highlight color. • Select chord, to display a range of related scales and chords. • Tap a note on the Grand Staff to highlight it with a color. • Choose from selection of backing rhythms that fit specific genres. • Chord Pattern playback Always backup your chord progressions!
Audonia
Develop your musical ear with exercises on intervals, chord qualities, and progressions. Learn to identify musical elements like a conservatory student, with instant feedback and generated content. Practice anytime, anywhere, even offline.
- Interval identification
- Chord quality recognition
- Cadence identification
- Chord progression analysis
- Instant feedback and comparison
- Offline functionality
- Real piano sound samples
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Ear-training exercises on intervals, chord qualities, cadences, and chord progressions. The cadences and progressions follow common-practice harmony and voice-leading, the style taught in university and conservatory theory courses: the leading tone rises to the tonic, sevenths resolve down, and parallel fifths and octaves are avoided. What you hear sounds like real music, not random notes. Practice the ear-training skills music schools teach and test, on your own, without a teacher at the piano. The exercises: • Intervals: Name the interval between two notes, ascending, descending, or harmonic. • Chord Qualities: Identify a chord's quality across voicings, played as a block or an arpeggio. • Cadences: Recognize Authentic, Plagal, Half, and Deceptive cadences. • Chord Progressions: Identify each chord in a functional progression, with optional inversions and the dominant seventh. Why Audonia: • Compare to hear the difference. After you answer, replay your pick against the correct one. • See what you heard. Every answer names what was played: the notes of an interval or chord, or the chords and their inversions in a cadence or progression. • Endless practice. Every exercise is generated fresh on your phone, so you never run out and never repeat a worksheet. • Works offline. Generation runs entirely on your device; no connection needed. • Light or dark mode. Follows your system preferences, or set it yourself in Settings. • Real piano. Sampled from an actual grand piano, not synthesized tones.
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Verdict
The clearest difference is review sentiment: Audonia at 100% against Chordio+'s 33%. Audonia also leads on rating (5.0 vs 2.3) and in-app purchases (none vs 10). Chordio+'s advantage is iOS requirement (15.0 vs 17.0). On price, ratings volume, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Chordio+ sells 10 one-off in-app purchases. Audonia asks for nothing beyond the download.
Audonia holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 6 and 3 respectively. Written reviews point the same way: 33% of Chordio+'s written reviews are positive against 100% of Audonia's.
Chordio+ ships an update every 5 weeks, Audonia every 9 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | Chordio+ | Audonia |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (6 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 6 — better | 3 |
| Update frequency | Every 5 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 154 MB | 5 MB |
| Age rating | 17+ | 4+ |
| Developer | One In A Billion Ltd | Nenufar Lane LLC |
Customer experience
Chordio+
Audonia
In-app purchases
Chordio+
- Free Chord PackFree
- RnB Chords No.1$1.99
- Neo-Soul Tunes 1$4.99
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- Neo-Soul Progressions 1$4.99
- II-V-I Progressions$4.99
- Jazz Progressions 1$4.99
- RnB Progressions 1$4.99
- Chord Progressions 251 No.1$4.99
- Classical Progressions 1$4.99
- Unlock App$6.99
Audonia
No in-app purchases









