Comparison

Saucillator vs Harmonic 639

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

Head to head
About

Saucillator

Create and play custom synthesizers and instruments on your mobile device. Manipulate oscillators and effects with touch, record live loops, and design unique sounds with a variety of timbres and customizable effects. Supports AUv3 for use in other music production apps.

Highlights
  • Custom synthesizer creation
  • Touchscreen oscillator manipulation
  • Live looping and recording
  • AUv3 instrument support
  • Multi-track looper and beat generator
  • Parametric EQ and filters
  • MIDI controller support
Features
Read full description

Musical inspiration at the touch of your fingertips - from doodle to zen in seconds. Inspired by the Korg Kaossilator and Moog synthesizers, Saucillator transforms mobile devices into a platform for creating, playing, and sharing digital synthesizers. Users use the touchscreen to manipulate oscillators and effects, and can also do live-looping and recording. Our goal is to be beginner friendly while at the same time offering all the deep, complex features traditional synth users love. Saucillator also now supports AUv3 so you can use many of its features in AUv3-supported host applications (tested with AUM, Loopy Pro, Garageband. Note that some host applications only support some output). A multi track looper and beat generator are available to create synth loops and synchronize a beat/click track alongside it. Loops can be modified, toggled, and added as you're playing. Users are able to play custom modular synthesizers using the x-y axes of the touchscreen. The x-axis corresponds to amplitude (volume) and the y-axis corresponds to frequency (pitch). Playback can also be looped, recorded, and EQed using a Parametric EQ. An Arpeggiator play mode also allows the touched notes to be arpeggiated, with customizable rate, pattern, gate, etc. On top of performing, users are able to create their own custom synthesizers, which consist of a custom timbre and user-defined effects. A variety of timbres are included: Sine, Square, Saw, Pulse, Noise, Theremin, "Singing Saw", "Electric Eel", and "Starslide" (among many more). These, as well as any user-created synths, can be mixed and matched at different harmonics, amplitudes, and phases to create custom sounds. Each synth has customizable fx parameters as well, including Envelope (ADSR - attack & release), Vibrato LFO (rate & depth), Tremolo, Reverb, Delay, Chorus, Distortion, Parametric EQ, and Note Lag (Portamento). We also include a Filter (low-pass, highpass, bandpass) that can be modulated using an Envelope or LFO. Custom synths can also be shared with the Saucillator community via an easy built-in sharing tool. Download other users' synths or upload your own, all from in app! Other abilities: -Choose scale: Pentatonic, Major, Minor, Blues, or Chromatic (among others). -Choose the base note for the pad. -Control the grid size. -Record to disk. -Live visualization of waveforms. -Play synths with external midi controllers -AUv3 instrument support Saucillator. I think it's the sauce, boss!

About

Harmonic 639

This app uses 639 Hz music and affirmations to help users release limiting beliefs and cultivate abundance. It offers a structured 21-day journey with personalized daily sessions and progress tracking.

Highlights
  • 639 Hz frequency music
  • Affirmations synced on screen
  • Personalized daily sessions
  • 21-day scarcity to abundance journey
  • Progress tracking dashboard
  • Mood-based browsing
  • Cinematic visual canvas
Features
Read full description

The thoughts that won’t stop. The patterns you can’t break. The version of you that keeps getting stuck. This is where that changes. Harmonic 639 is a 639 Hz music app designed to help you release limiting beliefs and step into the life you’ve been building toward. 168 cinematic tracks. Affirmations synced on screen. Personalized daily sessions. A 21-day journey from scarcity to abundance — and the tools to watch yourself shift. This isn’t a playlist. It’s a practice. YOUR 21-DAY SHIFT — SCARCITY TO ABUNDANCE A structured 21-day journey divided into three phases: Foundation, Building, and Activation. Each day, three tracks chosen for exactly where you are in the shift. Your progress tracked session by session. The change visible in front of you. Most people notice something different by day 7. THREE ZONES. ONE TAP TO MEET THE MOMENT. → Ground. Settle in. For winding down, journaling, evening resets, or before a tough conversation. Music for: Worthiness · Composure · Confidence. → Flow. Tune in. For workouts, deep work, creative sessions, the long commute. Music for: Momentum · Receiving. → Amplify. Lift off. For the gym, vision boarding, presentations, the moments that matter. Music for: Attraction · Manifestation · Abundance. TRACK YOUR SHIFT — THE PROGRESS DASHBOARD → Your 639 Story — days of practice, sessions completed, tracks finished, top zone → Abundance Balance — a real-time radar across all 7 frequency codes. See where you’re flowing and where you’re stuck. → Code Activity — listening streaks per code, with 30/90/all-time filters → Zone Rings — a visual map of how you’re moving across Ground, Flow, and Amplify over time → Your Flow This Week — bar chart of daily listening minutes. Consistency made visible. → Balance Trend — 30-day line chart of your abundance balance score → Level System — 100 levels across 10 tiers, earned through sessions, streaks, and journey completions HARMONIC MESSENGER — YOUR DAILY SIGNAL A personalized message delivered each morning on your home screen. Built from your quiz answers, listening history, and current journey progress. Not generic advice — a signal for exactly where you are right now, with tracks you can tap directly into. WHAT MAKES THIS DIFFERENT → 639 Hz Frequency Foundation Every composition is tuned to 639 Hz — the ancient solfeggio frequency of the heart. → Affirmations on Screen See the lyrics as you hear them. Reading and hearing simultaneously doubles the reinforcement. Current line highlighted. Toggle on or off. → Cinematic Visual Canvas Full-screen looping video behind every track — ocean surfaces, golden light, the world’s most beautiful places. Not a static player. An experience. → Browse by Mood Ten emotional states — Calm & Safe, Grounded, Confident, Powerful, Trust & Surrender, Growth & Progress, Leadership, Creative Flow, Identity & Becoming, Warm & Open. The right session for exactly how you feel right now. → Smart Playlists + Build Your Own Liked Tracks, Most Played, Recently Played, New to You — auto-built from your listening. Plus create your own playlists on top. THE 7 CODES Future Self Abundance — the debut series from Cre8tor Code. Seven codes. 168 tracks. All tuned to 639 Hz. Worthiness · Attraction · Confidence · Receiving · Success Identity · Manifestation · Momentum TRY PREMIUM FREE FOR 7 DAYS Full access — all 168 sessions, all 7 codes, all three zones, 21-day journey, full progress tracking, Harmonic Messenger daily signals. Cancel anytime. After trial: $9.99/month · $19.99/3 months · $69.99/year. Best with headphones. The 639 Hz frequencies are spatial — full stereo is how they land. harmonic639.com Terms of Use: https://harmonic639.com/terms

Screenshots

Saucillator4 screens
Harmonic 6394 screens

Verdict

The call

The clearest difference is in-app purchases: Saucillator at none against Harmonic 639's 3. Saucillator also leads on ads (none vs shown) and ratings volume (38 vs 1). On price, rating 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. Harmonic 639 sells 3 in-app purchases, starting at $9.99 per month. Saucillator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Saucillator against 5.0 for Harmonic 639. That said, the two scores are not equally well evidenced: Saucillator has 38 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Saucillator ships an update every 9 days, Harmonic 639 monthly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard6 real differences · 4 level
Saucillator versus Harmonic 639: the parameters behind the verdict, then further details
ParameterSaucillatorHarmonic 639
PriceFreeFree
Rating4.9 (38 ratings)5.0 (1 ratings) — better
Positive reviews92.9% of reviews—
Number of ratings38 — better1
Update frequencyEvery 9 days — betterMonthly
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better17.0
Further details — not scored
Size96 MB70 MB
Age rating4+4+
DeveloperGreen Noise LLCRobin Webber

In-app purchases

None

Saucillator

No in-app purchases

3 purchases

Harmonic 639

Subscriptions3
  • Harmonic 639 Monthly$9.991 Month
  • Harmonic 639 Quarterly$19.993 Months
  • Harmonic 639 Annual$69.991 Year

Questions

Is Saucillator free?
Saucillator is free to download, with no in-app purchases.
Is Harmonic 639 free?
Harmonic 639 is free to download, with in-app purchases available.
Which has better reviews, Saucillator or Harmonic 639?
Harmonic 639 is rated higher. Saucillator averages 4.9 out of 5 from 38 ratings, while Harmonic 639 averages 5.0 from 1 ratings.
Do Saucillator or Harmonic 639 have ads?
Harmonic 639 shows ads; Saucillator does not.
Which is updated more often, Saucillator or Harmonic 639?
Saucillator ships an update every 9 days, and Harmonic 639 monthly. Most recently, Saucillator was updated on November 5, 2026 and Harmonic 639 on October 31, 2026.

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