Comparison

Arranger Pro vs Beat Kitchen Harmonic Synth

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

Head to head
About

Arranger Pro

Transform your mobile device into a professional arranger keyboard. Play melodies and chords while a virtual band provides real-time accompaniment, drums, and bass. Explore a vast library of sounds and musical styles for endless creative possibilities.

Highlights
  • Virtual backing band accompaniment
  • Extensive sound library
  • Diverse musical styles
  • Split keyboard functionality
  • Pitch bend and modulation wheels
  • Performance recording and sharing
  • MIDI keyboard support
Features
Read full description

Arranger Pro turns your iPhone or iPad into a real arranger keyboard. Play melodies on the right, hold a chord on the left, and a backing band follows you in real time, drums, bass and accompaniment that move with the song. It feels like an instrument, not a toy. Split the keyboard, layer two sounds on top, bend a note, ride the modulation wheel, change tempo, kick in an intro, drop a fill, end on cue. Your hands stay where they expect to be. PLAY WITH A BAND • Hold a chord and a full backing band plays along • Smart transposition follows your chord in any key • Intro, main variations, fills, breaks and endings on tap SOUNDS FOR EVERY SONG • Concert grand and electric pianos • Tonewheel and combo organs • Acoustic, electric and clean guitars • Strings, brass, woodwinds and synths • Pads, basses and rich layered tones STYLES FOR EVERY MOOD • Pop, ballad, rock, country and R&B • Dance, disco and groove • Latin and bossa • Swing, jazz and blues • Waltz, ballroom and world & traditional • Movie & show, solo piano BUILT LIKE A REAL ARRANGER • Split keyboard with adjustable split point • Layer two sounds on the upper zone • Pitch bend and modulation wheels • Transpose, octave and tempo on the fly • Built-in metronome with accent and beats per bar • Touch sensitivity for expressive play • Reverb and chorus presets CAPTURE & SHARE • Record performances with one tap • Replay and rename your takes • Render takes to a shareable audio file • Share recordings with friends and bandmates USE YOUR OWN MIDI KEYBOARD • MIDI in and out support • Bluetooth MIDI for wireless controllers • Use the app as a sound module for your hardware Tap "Get" to start playing. Your next song is one chord away. Terms of Use: https://alyakastudio.com/terms/ Privacy Policy: https://alyakastudio.com/privacy-policy/

About

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.

Highlights
  • Additive synthesis engine
  • Overtone series shaping
  • Live waveform and spectrum response
  • Modulation matrix with LFOs and envelopes
  • AUv3 support
  • On-device processing
Features
Read 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.

Screenshots

Arranger Pro4 screens
Beat Kitchen Harmonic Synth4 screens

Verdict

The call

The clearest difference is ads: Beat Kitchen Harmonic Synth at none against Arranger Pro's shown. Beat Kitchen Harmonic Synth also leads on update cadence (every 3 days vs every 3 months). On price, rating, ratings volume and in-app purchases 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. Arranger Pro sells 3 in-app purchases, starting at $4.99 per month and Beat Kitchen Harmonic Synth sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Beat Kitchen Harmonic Synth holds the better App Store score, 4.8 against 4.7. Both are backed by a comparable volume of ratings — 6 and 12 respectively.

UpkeepUpdate frequency

Arranger Pro ships an update every 3 months, Beat Kitchen Harmonic Synth every 3 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Arranger Pro versus Beat Kitchen Harmonic Synth: the parameters behind the verdict, then further details
ParameterArranger ProBeat Kitchen Harmonic Synth
PriceFreeFree
Rating4.7 (6 ratings)4.8 (12 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings612 — better
Update frequencyEvery 3 monthsEvery 3 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.216.0 — better
Further details — not scored
Size100 MB60 MB
Age rating4+4+
DeveloperAlper KahrimanBeat Kitchen LLC

Customer experience

Arranger Pro

All ratings6 ratings
Positive83.3%
Neutral16.7%
Negative0.0%

Beat Kitchen Harmonic Synth

All ratings12 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Arranger Pro

Subscriptions2
  • Arranger Pro Monthly$4.991 Month
  • Arranger Pro Yearly3 Days trial$24.991 Year
One-time1
  • Arranger Pro Lifetime$49.99
1 purchases

Beat Kitchen Harmonic Synth

One-time1
  • Full Unlock$14.99

Questions

Is Arranger Pro free?
Arranger Pro is free to download, with in-app purchases available.
Is Beat Kitchen Harmonic Synth free?
Beat Kitchen Harmonic Synth is free to download, with in-app purchases available.
Which has better reviews, Arranger Pro or Beat Kitchen Harmonic Synth?
Beat Kitchen Harmonic Synth is rated higher. Arranger Pro averages 4.7 out of 5 from 6 ratings, while Beat Kitchen Harmonic Synth averages 4.8 from 12 ratings.
Do Arranger Pro or Beat Kitchen Harmonic Synth have ads?
Arranger Pro shows ads; Beat Kitchen Harmonic Synth does not.
Which is updated more often, Arranger Pro or Beat Kitchen Harmonic Synth?
Arranger Pro ships an update every 3 months, and Beat Kitchen Harmonic Synth every 3 days. Most recently, Arranger Pro was updated on November 5, 2026 and Beat Kitchen Harmonic Synth on October 31, 2026.

Other comparisons