Comparison

Harmonaut vs PNEUMATIC

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

Head to head
About

Harmonaut

Create rich musical chord progressions by feel, without music theory. Shape the mood with intuitive faders and export your creations as MIDI for use in any Digital Audio Workstation. Perfect for songwriters and producers looking for a new way to explore musical ideas.

Highlights
  • Play chords by feel, no theory required
  • Shape chord mood with tension and brightness faders
  • Build and reorder full chord progressions
  • Voice-led chords for smooth transitions
  • Export progressions as MIDI files
  • Export to iReal Pro format
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

PNEUMATIC

This app simulates a unique valve pressure synthesizer, allowing users to control pressure, tune resonance, and add buzzing whistles. It can be played directly on screen or with a MIDI keyboard, offering a distinctive soundscape.

Highlights
  • Pressure control
  • Resonant tuning
  • Buzzing whistle effect
  • MIDI keyboard support
  • Save and load presets
  • AUv3 instrument
Read full description

PNEUMATIC is a valve pressure synth from NOIDED Industries. Push the lever and pressure builds in the tank. The pipe starts to whistle, the leak screams higher and the gauge climbs. Let go and it slams back, bleeding off into silence. Push it all the way across and it latches for a sustained drone. PRESSURE sets how hard the tank fills. PIPE tunes the resonant noise. LEAK adds a buzzing whistle that rises with the pressure. BLEED decides how fast it all drains away. No extra hardware needed. Everything is played on screen. If you want, any standard MIDI keyboard or MIDI app can also play it, with every note transposing the whole machine. Play it from a MIDI keyboard and every note transposes the whole machine. Velocity and aftertouch push the lever for you. Standalone app and AUv3 instrument Full MIDI CC control of every parameter Optional MIDI keyboard support (velocity, aftertouch, mod wheel)Keyboard, velocity, aftertouch and mod wheel control Save and load your own presets Works in AUM, GarageBand, Cubasis and other AUv3 hosts Made in Rochdale, UI elements photographed from local industrial areas. STAY NOIDED.

Screenshots

Harmonaut4 screens
PNEUMATIC4 screens

Verdict

The call

The clearest difference is in-app purchases: PNEUMATIC at none against Harmonaut's 1. PNEUMATIC also leads on iOS requirement (15.6 vs 17.0). On price, rating, review sentiment and ratings volume 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. Harmonaut sells 1 one-off in-app purchase. PNEUMATIC asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Harmonaut against 5.0 for PNEUMATIC. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Scorecard3 real differences · 7 level
Harmonaut versus PNEUMATIC: the parameters behind the verdict, then further details
ParameterHarmonautPNEUMATIC
PriceFreeFree
Rating5.0 (7 ratings)5.0 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings7 — better4
Update frequencyEvery 9 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size117 MB16 MB
Age rating4+4+
DeveloperDistrict One Mobile, LLCAnthony Moran

Customer experience

Harmonaut

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

PNEUMATIC

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Harmonaut

One-time1
  • Harmonaut Pro$9.99
None

PNEUMATIC

No in-app purchases

Questions

Is Harmonaut free?
Harmonaut is free to download, with in-app purchases available.
Is PNEUMATIC free?
PNEUMATIC is free to download, with no in-app purchases.
Which has better reviews, Harmonaut or PNEUMATIC?
Harmonaut and PNEUMATIC are both rated 5.0 out of 5 on the App Store, from 7 and 4 ratings respectively.
Do Harmonaut or PNEUMATIC have ads?
Neither Harmonaut nor PNEUMATIC shows ads.

Other comparisons