Comparison

Hillman Synth vs Phase Monkey

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

Head to head
About

Hillman Synth

This app emulates vintage combo-organs and string machines with analog-inspired sound generation. It offers four selectable waveforms per note, adjustable octaves, and built-in ensemble, phaser, and reverb effects for rich soundscapes.

Highlights
  • Analog-inspired sound generation
  • 4 selectable waveforms per note
  • Adjustable octave offset
  • Ensemble chorus effect
  • 4-pole phaser effect
  • Lush reverb effect
Read full description

Hillman is a synthlike instrument inspired by old combo-organs, string machines and similar vintage gear. 4 voices per note, each with selectable waveform (transistorish, tubeish, sine and special plasma), octave switch and a level control. Sounds are generated with an analog approach, but does not use samples or sampled wavetables. --- User interface --- Voices Level - Level control. Type - Select between Transistor, Tube, Sine-wave or a special plasma oscillator. Octave - Octave offset for each note voice. (-1 to +2). --- ADSR Envelope controls --- FXs Ensemble - A classic ensemble chorus with 3 different modes Phaser - 4 pole phaser with 2 different modes with different frequency ranges and notch depths. Reverb - Lush reverb which ranges from small room to churchlike halls. Output level - Overall level control --- Full documentation available inside the app or at https://klevgrand.se/downloads/hillman-docs/

About

Phase Monkey

Explore a versatile digital synthesizer inspired by 1980s phase distortion technology. Create a wide range of sounds from warm pads to aggressive basses with its unique engine and eight-stage envelopes. Optimized for touch interaction, it also supports MIDI controllers and runs across Apple devices.

Highlights
  • Phase distortion synth engine
  • Eight-stage envelopes
  • Touch-first interface
  • AUv3 plugin support
  • Universal Apple purchase
  • MIDI controller support
  • iCloud preset syncing
Read full description

Phase Monkey is a polyphonic synthesizer inspired by the classic phase distortion synthesizers of the mid-1980s. However, instead of being a direct copy, Phase Monkey presents a fresh take on the classic sound engine, including the rare eight-stage envelopes. The result is a surprisingly versatile digital instrument that can produce anything from warm pads to shimmering leads to snarling basses. Whatever you do, don’t have fun with it! Features: - Focused, fun, and characterful synth engine - Touch-first design, almost the entire screen is part of a control - Runs standalone or as AUv3 plug-in (in compatible host) - Universal purchase on Apple platforms: runs on iPhone, iPad, and Mac - Presets synced across your devices via iCloud - Hook up a MIDI controller to play with a keyboard (optional) Details: - Eight classic phase distortion waveforms - Dedicated modulation oscillator for ring or noise modulation - Three rare eight-stage envelopes - Complex modulation of pitch and timbre possible via envelopes - LFO with five waveforms for classic modulation sounds - Master controls: portamento, random voice pan, onboard chorus, gain - Key behavior modes: poly, monophonic retrig, monophonic legato - Additional MIDI modulation sources: mod wheel, pitch bend, velocity, aftertouch (channel), key follow - Includes 40 highly usable factory presets to get you started making music Check out our YouTube: https://www.youtube.com/@sketchaudio Read the manuals: https://sketchaudio.com/manuals/

Screenshots

Phase Monkey3 screens

Verdict

The call

The clearest difference is update cadence: Phase Monkey at weekly against Hillman Synth's every 17 months. Phase Monkey also leads on rating (4.8 vs 4.4) and price ($5.99 vs $10.99). Hillman Synth's advantage is iOS requirement (13.0 vs 15.0). On review sentiment, ratings volume, ads 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

Hillman Synth costs $10.99 and Phase Monkey $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Phase Monkey holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 18 and 17 respectively. Written reviews complicate that: 75% of Hillman Synth's written reviews are positive against 71% of Phase Monkey's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Hillman Synth ships an update every 17 months, Phase Monkey weekly. The most recent releases landed on September 8, 2026 and July 16, 2026 respectively.

Scorecard5 real differences · 5 level
Hillman Synth versus Phase Monkey: the parameters behind the verdict, then further details
ParameterHillman SynthPhase Monkey
Price$10.99$5.99 — better
Rating4.4 (18 ratings)4.8 (17 ratings) — better
Positive reviews75.0% of reviews — better71.4% of reviews
Number of ratings18 — better17
Update frequencyEvery 17 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod, Mac — better
Requires iOS13.0 — better15.0
Further details — not scored
Size7 MB15 MB
Age rating4+4+
DeveloperKlevgrand Produkter ABSketch Audio, LLC

Customer experience

Hillman Synth

All ratings18 ratings
Positive83.3%
Neutral5.6%
Negative11.1%
Written reviews12 reviews
Positive75.0%
Neutral8.3%
Negative16.7%

Phase Monkey

All ratings17 ratings
Positive94.1%
Neutral0.0%
Negative5.9%
Written reviews7 reviews
Positive71.4%
Neutral14.3%
Negative14.3%

In-app purchases

None

Hillman Synth

No in-app purchases

None

Phase Monkey

No in-app purchases

Questions

Is Hillman Synth free?
Hillman Synth costs $10.99, with no in-app purchases.
Is Phase Monkey free?
Phase Monkey costs $5.99, with no in-app purchases.
Which has better reviews, Hillman Synth or Phase Monkey?
Phase Monkey is rated higher. Hillman Synth averages 4.4 out of 5 from 18 ratings, while Phase Monkey averages 4.8 from 17 ratings.
Do Hillman Synth or Phase Monkey have ads?
Neither Hillman Synth nor Phase Monkey shows ads.
Which is updated more often, Hillman Synth or Phase Monkey?
Hillman Synth ships an update every 17 months, and Phase Monkey weekly. Most recently, Hillman Synth was updated on September 8, 2026 and Phase Monkey on July 16, 2026.

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