Comparison

KEYCANVAS vs Harmonauta

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

Head to head
About

KEYCANVAS

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KEY CANVAS works natively with iDance Keyboards in wireless Bluetooth HID connectivity. No Cable needed, just turn on your Bluetooth on your iPad or iPhone, and enjoy Without any latency your iDance Music Keyboards. On Free version, Enjoy a Powerful one Engine TONES generator, with 100 Tones, and 200 Styles in Rhythms or Backing Tracks. Two in-app versions are available: For iDance Music Keyboards with Wireless Bluetooth connectivity For other Keyboards using MIDI cable or Wireless midi. Thanks for the in-app version, your KEY CANVAS offers a full Solution to record with the STUDIO mode, with 4x Channels Multi-Tracks with Tones, Solo, Pan, Mute controls, add 9 effects to your Tones or your Styles, and Play DJ Soundpads, with Guitar mode chords. Export your recorded song in Wave format and share it. The in-app version opens a Dual Tone Generator, with a Fader Morphing function to blend your 2 favorites tones. At the Octave you want, or Split your Keyboards with 2 differents tones. FAVORITES memory, lets you save all your setting in 8 immediate RECALL memory. Use the STYLES in the STUDIO mode, either Rhythms or Backing Tracks, can be recorded on the fly, with your keyboard play. Recording had never been easy, intuitive, and in Tempo !!! KEY CANVAS in-app versions integrates 7x Music modules: - PIANO mode with REPEATER, FILTER, TREMOLO and Pitch Bend articulation - DUAL Tones Engine with FADER MORPHING and SPLIT mode - 100 TONES - 200 STYLES with Rhythms and Backing Tracks, with Pith Shifter - 12 PADS organized in SOUNDPADS, Guitar Chords, Piano Chords, and DEEJAY - STUDIO mode with 4 Channels Muti-Tracks recorder with Versatile Mixer with all the controls you need to shape your sound - Double DSP processor of 9 effects for the STYLES or the TONES/ Features for the in-app are as below: Pitch Bend, Tremolo, REPEATER Tone effect Octave Control Filter Effect on TONE Duo / Split Function with MORPHING Fader Adjustable SPLIT POINT 100 Superb Tones in 5 categories: Keyboards, Guitars, Strings, Brass and Synth 9 Fabulous Drumkits including Vintage TR-808 200 STYLES as Backing Tracks or Rhythms 100 Backing Tracks in 8 Categories: Pop/Rock, Soul/RnB, Hip Hop, Blues, Jazz, Latin, World 100 Rhythms in 8 Categories: Pop/Rock, Soul/RnB, Hip Hop, Blues, Jazz, Latin, World Import Style from any audio, with Edit in/out tools on the fly + Rename Import Style Tempo/Pitch Shifter Control on the STYLES 4 PADS Bank: iDance, Guitar, Piano and DEEJAY 12 pads per Bank Pitch Bend Effect on the SOUNDPADS STUDIO Mode: 4x Channel Multi-Tracks Real time Recorder LOOP IN/OUT adjustable Solo, Volume, Mute, Pan, Controls for each Track EXPORT SONG as audio file Twin DSP Effects on STYLES and TONES, XY Kaoss Pads Styles 9 Effects for the STYLES: Reverb, Delay, Disto, DistoDelay, Chorus, Flanger,Warp Filter, Pitch Shifter, Formant 9 Effects for the Tones: Reverb, Delay, Disto, DistoDelay, Chorus, Flanger,Warp Filter, Pitch Shifter, Formant Dry/Wet Control for each EFFECT 8 FAVORITES memory, easy to set up and Recall. MIXER Pop up page with TONES, STYLES, PADS, and MASTER Fader control Midi Control for Non iDance Keyboards Support: info@idanceintl.com

About

Harmonauta

Features
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Harmonauta is a music maker for songwriters that starts where songs actually start: with a feeling. Instead of scales, wheels and chord tables, you get a living galaxy of sixteen emotions. Tap Longing, add a little Joy, pull Serenity closer, and the Core hums the key it hears. Forge it, and Harmonauta lays out a chord progression that carries that feeling: the right mode, the right movement, the right extensions, voiced and played back so you can judge it by ear. Then keep shaping. FORGE A TONE • Blend up to four emotions and weight them by dragging them toward the Core • Progressions built from a library of emotional archetypes across seven modes • Depth control: Pure triads, Rich sevenths, or Lush ninths and colour tones • Feel control: hold, pulse, strum, picked or piano comping, plus tempo and key • Genre: Pop, Rock, Hip-hop, R&B, Electronic, Folk, Jazz, Lo-fi, Bossa nova, MPB, Reggae or Blues, or let the feeling decide • A melody line written over your chords, shown as a piano roll, rerollable • Reroll for another take on the same feeling HEAR IT PROPERLY • Ten instruments (pad, glass keys, pluck, electric piano, nylon guitar, crunch guitar, organ, bells, strings, flute) and three basses • Drums with sixteen grooves, from a soft pulse and bossa to boom bap, swing, samba, one drop, four on the floor and a blues shuffle • Bass lines that play a real part: a pedal under calm, lush chords, root and fifth, octaves when it gets loud, a walking line through the key; genres bring their own, from a blues boogie to samba and bossa • Five spaces from dry to cathedral and plate • Binaural beat for headphones: a quiet tone in each ear around the key note, pulsing in time with the song • The screen stays awake while anything is playing • Auto picks all of it from the feeling or the genre; override anything in the Sound sheet RESHAPE ANY CHORD • Shards: smart substitutions for every chord, from relative minors and mediants to secondary dominants, tritone subs and borrowed colour • Change chord lengths, add and remove chords • See the guitar shape for every chord, with alternatives one tap away GROW IT INTO A SONG • The Journey builds an intro, verse, pre-chorus, chorus, bridge and outro from your seed • Tint any section with a different feeling and Harmonauta rewrites its harmony to match • Reorder, duplicate, repeat and regenerate sections • Play the whole arrangement end to end; the trail scrolls itself to the section being played TAKE IT WITH YOU • Guitar sheet PDF: chord diagrams above every bar, fingerings, barres, positions • MIDI export for any tone or full song with chord, bass line, melody and drum tracks, ready for your DAW • Copy a chord sheet as text • A library that remembers every tone and song with its mood Harmonauta is built for songwriters, composers, producers and anyone who has a feeling before they have a chord. It runs entirely on your device, with no account and no internet required.

Screenshots

KEYCANVAS4 screens
Harmonauta4 screens

Verdict

The call

The clearest difference is update cadence: Harmonauta at every 4 days against KEYCANVAS's every 4 months. KEYCANVAS's advantage is device support (3 vs 1) and iOS requirement (13.4 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

KEYCANVAS ships an update every 4 months, Harmonauta every 4 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Ā· 3 level
KEYCANVAS versus Harmonauta: the parameters behind the verdict, then further details
ParameterKEYCANVASHarmonauta
PriceFreeFree
Update frequencyEvery 4 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.4 — better17.0
Further details — not scored
Size514 MB3 MB
Age rating4+4+
DeveloperiDanceEvandro Guedes Machado

In-app purchases

None

KEYCANVAS

No in-app purchases

None

Harmonauta

No in-app purchases

Questions

Is KEYCANVAS free?
KEYCANVAS is free to download, with no in-app purchases.
Is Harmonauta free?
Harmonauta is free to download, with no in-app purchases.
Do KEYCANVAS or Harmonauta have ads?
Neither KEYCANVAS nor Harmonauta shows ads.
Which is updated more often, KEYCANVAS or Harmonauta?
KEYCANVAS ships an update every 4 months, and Harmonauta every 4 days. Most recently, KEYCANVAS was updated on October 25, 2026 and Harmonauta on October 31, 2026.

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