Beat Kitchen Harmonic Synth vs Leaf Light
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Beat Kitchen Harmonic Synth
Shape the overtone series directly to create unique sounds. This additive synthesizer allows real-time manipulation of harmonics, LFOs, and envelopes. Explore sound design and synthesis on your device.
- Additive synthesis engine
- Overtone series shaping
- Live waveform and spectrum response
- Modulation matrix with LFOs and envelopes
- AUv3 support
- On-device processing
Read full descriptionHide full description
BKS Harmonic is an additive synthesizer that builds sound from individual overtones, then gives you tools to shape, scan and filter them by harmony. Load it as an Audio Unit v3 inside AUM, GarageBand, Cubasis, Loopy Pro or any AUv3 host, or run it standalone. A TUNER THAT KNOWS ABOUT STRETCH Tune mode turns the scope into a tuner: it names the note it hears and shows how far sharp or flat it is in cents, with a ring that closes as you land on the pitch. It tunes against the stretch curve rather than equal temperament, so it follows a real instrument. Stretch shapes the overtones inside a note; Key Stretch makes the keyboard follow it, so octaves widen the way a piano's do. FOURTEEN TUNING SYSTEMS, AND A TEMPERAMENT EDITOR Equal and Just, five historical temperaments, and six from outside the European tradition including Maqam Rast, Turkish Rast, Slendro, Pelog and the Harmonic Series. The Temperament slider is a morph, not a switch: fully left is Just, fully right is whichever you chose. Twelve bars show any system as cents away from equal; drag one to make the tuning yours, then copy it out as plain text. Tunings save with the preset. FIVE HUNDRED SCALES Searchable by alternate name: malkauns, nikriz, bhupali and freygish find the right set. THE PARTIALS ARE THE INSTRUMENT The partials display shows every overtone in your sound, and four tools work on it directly. FOLD sweeps upper partials below the fundamental, redistributing energy across harmonic layers — not a filter. The OVERTONE SCAN steps a spotlight through individual partials with triangle, saw or random patterns, and can visit only partials in the active scale. The HARMONIC GATE reinforces partials whose pitch class matches your chord and suppresses the rest: capture a chord, follow MIDI, split the keyboard, or pick the notes on the gate's own keys. SCULPT draws the level and pan of every partial, slides the curve up the grid as a formant, and locks partials in place while the rest moves. THE HARMONIC VOCODER Pass live input or a sample through the synth as an effect. Your sound travels through a bank of tuned peaking bells rather than being replaced by filtered noise: open the Air and the source stays dry, tighten it and the bands resonate into it. Key Track is the mode switch: on it plays as an instrument, off it is a fixed filter you can sweep. Aimed at a sample, the bands track that sample's spectrum as it evolves. One level-matched Blend control crossfades it against the oscillators. PULSE-WIDTH MODULATION Set the core to a saw and Source 2 to a saw: the two ramps subtract, which is what a pulse wave is, and the phase between them sets the duty cycle. Modulate it and you have PWM. A preset in the Utility folder is ready to play. MODULATION A cog on almost every control, so the synth's own engine can drive nearly anything in the interface, including the display. Sources include velocity, envelopes, LFOs, how many notes you hold, how many oscillators sound, the synth's own output level, and Atmo, a shape driven by 84 years of barometric weather data from the Beat Kitchen Weather Sonification Project. Rates run from audio rate down to cycles that span years. THE SCOPE A stereoscope, oscilloscope, spectrum and a live per-partial display. Glow takes the trace from a hard line to a diffuse bloom, Colour sets the hue, Trace Speed and Dot set how it draws — and every one is a modulation target. Route velocity to Colour and the trace shifts as you play. LIVE INPUT A headphone button passes the side-chain straight to the output, so you can hear and see your input with nothing held: green when signal arrives, amber when a bus is connected but silent, red when nothing is. Resynth Speed locks a sample's playback speed to pitch, tape-style, or keeps them independent. Every control has a tooltip, presets work offline, and a harmony wheel follows what you play. One purchase, every update. Made by Beat Kitchen, a music production and teaching community.
Leaf Light
This app offers a unique audio experience, simulating a lightfield lenticular ambiance machine with flanger, delay, and reverb effects. Control sound parameters through a simulated tree canopy, blending natural sights and sounds for relaxation or musical creativity.
- Lightfield lenticular ambiance machine
- Flanger, delay, and reverb effects
- Simulated tree canopy control
- Time of Day, Brightness, Wind parameters
- Camera Distance, Aperture Focus, Light Trails effects
- Standalone or AUv3 host compatibility
Read full descriptionHide full description
Are you looking for a beautiful white noise machine to match your aesthetic and soothe your soul? Are you looking for a truly unique instrument effect for your music? What if we thought of your incoming instrument signal as the sun, split it through a tree canopy into dozens of copies, and then shifted the timing of those signals as the tree moved? Relax and invigorate with the natural sights and sounds of Leaf Light - the world's first lightfield lenticular ambiance machine and flanger/delay/reverb. With all parameters controlled by a simulated tree canopy, you'll be able to dial in the perfect sound with both your eyes and ears. Tune in the: - Time of Day (sound color) - Brightness (rays of sound, hi-freq) - Wind (motion of sounds) And for effect modes: - Camera Distance (Delay time and spread) - Aperture Focus (Lo-pass filter on repeats) - Light Trails (Delay feedback) Leaf Light is a new way to see and hear nature in unnatural environments. Enjoy the app in standalone or with AUv3 hosts. Headphones are recommended :)
Screenshots
Verdict
The clearest difference is update cadence: Beat Kitchen Harmonic Synth at every 3 days against Leaf Light's every 6 weeks. Beat Kitchen Harmonic Synth also leads on ratings volume (12 vs 2). Leaf Light's advantage is monetization model (free vs free with in-app purchases) and rating (5.0 vs 4.8). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Leaf Light holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Beat Kitchen Harmonic Synth has 12 ratings behind it against 2, so its average is the more settled of the two.
Beat Kitchen Harmonic Synth ships an update every 3 days, Leaf Light every 6 weeks. The most recent releases landed on October 1, 2026 and September 23, 2026 respectively.
| Parameter | Beat Kitchen Harmonic Synth | Leaf Light |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (12 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 12 — better | 2 |
| Update frequency | Every 3 days — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 59 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Beat Kitchen LLC | Radii Research |
Customer experience
Beat Kitchen Harmonic Synth
Leaf Light
In-app purchases
Beat Kitchen Harmonic Synth
No in-app purchases
Leaf Light
No in-app purchases
Questions
Is Beat Kitchen Harmonic Synth free?
Is Leaf Light free?
Which has better reviews, Beat Kitchen Harmonic Synth or Leaf Light?
Do Beat Kitchen Harmonic Synth or Leaf Light have ads?
Which is updated more often, Beat Kitchen Harmonic Synth or Leaf Light?
Other comparisons















