Comparison

ChordBloom vs Audonia

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ChordBloom

Features
Read full description

ChordBloom turns music theory into a garden. Chords bloom as petals around the key you're in — tap to hear them, wander to neighboring keys, and watch harmony make sense visually. EXPLORE HARMONY BY TOUCH Diatonic chords, the circle of fifths, relative and parallel keys, tritone substitutions, modal interchange — each view lays the theory out as petals you can play. Long-press to cycle extensions (7ths, 9ths, 13ths), choose close, open, or spread voicings, and phrase chords as blocks, strums, or arpeggios. REAL SYNTHESIS, ON DEVICE A full SuperCollider synth engine runs right on your phone alongside classic synth voices — warm pads, plucks, bells, keys, and ambient textures. Every note is synthesized live, and it all works completely offline. AI IMPROVISATION Let the built-in improviser play melodies over your chord changes while you drive the harmony. SAVE YOUR PROGRESSIONS Collect chords into palettes and build progressions you can come back to. MIDI OUTPUT — OPTIONAL UNLOCK Turn ChordBloom into a chord controller for your whole studio: a one-time in-app purchase unlocks BLE MIDI to hardware synths and CoreMIDI to DAWs and other iOS music apps. No account. No ads. No data collected.

About

Audonia

Develop your musical ear with interactive exercises on intervals, chord qualities, and progressions. Practice essential music theory skills without a teacher, hearing realistic piano sounds and seeing your answers.

Highlights
  • Interval training
  • Chord quality identification
  • Cadence recognition
  • Chord progression analysis
  • Real piano sound samples
  • Offline functionality
  • Light/dark mode
Read full description

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.

Screenshots

ChordBloom3 screens
Audonia4 screens

Verdict

The call

The clearest difference is in-app purchases: Audonia at none against ChordBloom's 1. On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. ChordBloom sells 1 one-off in-app purchase. Audonia asks for nothing beyond the download.

UpkeepUpdate frequency

ChordBloom ships an update every 4 days, Audonia weekly. The most recent releases landed on October 18, 2026 and October 16, 2026 respectively.

Scorecard1 real difference · 9 level
ChordBloom versus Audonia: the parameters behind the verdict, then further details
ParameterChordBloomAudonia
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 4 days — betterWeekly
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size4 MB4 MB
Age rating4+4+
DeveloperJames HurlbutNenufar Lane LLC

In-app purchases

1 purchases

ChordBloom

One-time1
  • MIDI Output$4.99
None

Audonia

No in-app purchases

Questions

Is ChordBloom free?
ChordBloom is free to download, with in-app purchases available.
Is Audonia free?
Audonia is free to download, with no in-app purchases.
Do ChordBloom or Audonia have ads?
Neither ChordBloom nor Audonia shows ads.
Which is updated more often, ChordBloom or Audonia?
ChordBloom ships an update every 4 days, and Audonia weekly. Most recently, ChordBloom was updated on October 18, 2026 and Audonia on October 16, 2026.

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