Comparison

Harmonaut vs G.ROUND

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

Head to head
About

Harmonaut

Create music by feel without needing music theory. This app generates rich chords and smooth progressions, allowing you to shape the mood with intuitive controls. Save and reorder your musical ideas effortlessly.

Highlights
  • Play by feel, no theory required
  • Shape mood with tension and brightness faders
  • Smooth voice leading for flowing progressions
  • Chords named for musicians
  • Save and reorder progressions
  • Works on iPhone and iPad
Features
Read full description

Harmonaut™ is a chord instrument you play by feel. Press a key and hear a rich chord, voice-led smoothly from the last one, no theory needed. Build a progression, shape its mood, and export it as MIDI for your track. Two faders let you shape the mood as you play: more tension or less, brighter or darker, even major to minor. Chase a moody electronic progression, a warm lo-fi loop, a jazzy turn, a cinematic swell, or a simple pop hook. It all comes from your intent, not from naming chords. HOW IT PLAYS • Tension that actually resolves: chords that lean, pull home, and land, so your progression goes somewhere instead of just floating • Every one of the twelve keys is in play: reach past the obvious chords for richer, more surprising color, and it still sounds right • Build a whole progression, not just four chords: every chord you play lands in your trail, ready to reorder or duplicate to try new versions in seconds • Pick up right where you left off: your ideas are saved for you TAKE IT TO YOUR TRACK • Export any progression as a MIDI file and drop it into BandLab, GarageBand, or any DAW that opens MIDI, then play it through any instrument you like • Export to iReal Pro format to keep a chord chart or practice over the changes • Harmonaut Pro unlocks MIDI export, iReal Pro export, and unlimited saved progressions IT SOUNDS GOOD FOR A REASON Every chord is voice-led from the one before it, live, as you play: the notes move the shortest way, so a progression flows instead of jumping around. That's the finished feeling you hear in the songs you love. Push Intensity and the voicings open up: lush 9ths, bright 13ths, and altered dominants like G7#9b13, the colors session keyboard players reach for. And Harmonaut names every chord the way musicians actually write it, like Ebmaj7, so you can hand your progression to a session player, a bandmate, or a producer and they'll play it back exactly, first time. No box to buy, nothing to charge, no menus to dig through. It's already in your pocket. Whether it's your first progression or a sound you can hear but can't name, Harmonaut meets you where you are. See the end user license agreement at the following link: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

G.ROUND

Features
Read full description

G.ROUND is a generative performance instrument built for musicians who want to create grooves, chord progressions, basslines, and evolving synth textures from one expressive interface. At the center of G.ROUND are two harmonic wheels: choose a chord, shape its color, change its mode, and instantly turn musical ideas into playable progressions. Every engine follows the other: drums, bass, synth, arpeggiator, recorder, and MIDI output stay locked together while you perform. Build a beat with the drum sequencer, design each drum voice with layered synthesis and modulation, generate basslines that follow your harmony, then shape a four-voice synth with oscillator, filter, envelopes, glide, LFO, delay, reverb, and advanced voicing controls. G.ROUND is not just a sequencer. It is an instrument that reacts to harmony. Record a chord performance, edit it as musical information, then keep changing the sound around it. Swap drum patterns, reshape the bass, alter the synth, enable the arpeggiator, change presets, or send MIDI to external gear without losing the progression that started the idea. Features: • Dual-wheel harmonic performance interface • Chromatic and diatonic chord control • Chord extensions, harmonic colors, and “Nerd Mode” options • Four-voice polyphonic synth engine • Arpeggiator with multiple rates, swing, gate, octave range, chord patterns, and variation • Monophonic bass synth with root, pattern, walking, melodic, acid, riff, and blues-style behaviors • Drum sequencer with kick, snare, and hi-hat lanes • Two-layer drum voice design with oscillator/noise, envelopes, filter, tone, and level controls • Per-drum modulation synced to tempo or free-running in Hz • Harmonic performance recorder with bar-synced recording and playback • Detailed MIDI track editor for recorded chord progressions • Up to 99 complete session presets • Global mixer with synth, bass, drums, and master volume control • Delay and reverb for synth textures • Voice-leading, strumming, modulation, and pitch-bend performance controls • MIDI output via cable, Bluetooth MIDI, IDAM, and CoreMIDI destinations • Multiple visual themes and adjustable internal sample rate Whether you are sketching a new track, exploring harmony, designing electronic grooves, or controlling external instruments, G.ROUND gives you a fast, tactile way to turn one gesture into a complete musical system. Start with a chord. Let the machine move. Shape everything. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.paulgiorgi.com/privacy/g-round

Screenshots

Harmonaut4 screens
G.ROUND4 screens

Verdict

The call

The clearest difference is in-app purchases: Harmonaut at none against G.ROUND's 3. Harmonaut also leads on iOS requirement (17.0 vs 26.0). On price, 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. G.ROUND sells 3 in-app purchases, starting at $1.99 per month. Harmonaut asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Harmonaut versus G.ROUND: the parameters behind the verdict, then further details
ParameterHarmonautG.ROUND
PriceFreeFree
Rating5.0 (6 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 10 days—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better26.0
Further details — not scored
Size117 MB32 MB
Age rating4+4+
DeveloperDistrict One Mobile, LLCPaolo Giorgi

In-app purchases

None

Harmonaut

No in-app purchases

3 purchases

G.ROUND

Subscriptions2
  • G.ROUND Monthly$1.991 Month
  • G.ROUND Yearly$12.991 Year
One-time1
  • G.ROUND Lifetime$34.99

Questions

Is Harmonaut free?
Harmonaut is free to download, with no in-app purchases.
Is G.ROUND free?
G.ROUND is free to download, with in-app purchases available.
Do Harmonaut or G.ROUND have ads?
Neither Harmonaut nor G.ROUND shows ads.

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