Comparison

Rhythm Ace vs Morphix Synthesizer

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

Head to head
About

Rhythm Ace

This app is a faithful simulator of a vintage 1967 drum machine, recreating its authentic analog sounds and rhythm presets. It allows for real-time synthesis of percussion, pattern layering, and individual voice muting for unique groove creation.

Highlights
  • Faithful vintage drum machine simulation
  • Real-time synthesized analog sounds
  • 16 classic rhythm presets
  • Authentic pattern combining
  • Individual voice cancel controls
  • Precision tempo control
Features
Read full description

Rhythm Ace is a faithful simulator of the Ace Tone FR-1 — one of the earliest consumer drum machines, built in Japan in 1967 and the ancestor of the legendary Roland rhythm machines. Every sound is synthesized in real time using classic transistor-style audio circuits — no samples, no loops. Just pure, characterful analog-era percussion the way it was meant to sound. Eight synthesized voices Bass Drum · Snare · Low Conga · High Conga · Cymbal · Claves · Cowbell · Maracas 16 classic rhythm presets Waltz, Bossa Nova, Samba, Rock, Swing, Foxtrot, and more — all faithfully recreated from the original FR-1 diode matrix. Authentic pattern combining Select multiple rhythm buttons to layer patterns exactly like the original hardware — the diode matrix OR-combines their steps, letting you build complex grooves from simple presets. Voice cancel controls Mute individual instruments on the fly with the dedicated cancel buttons, just like the original panel. Precision tempo control Large rotary knob for natural, tactile BPM adjustment. Sample-accurate scheduling Built on a lookahead audio clock for tight, rock-solid timing — no drift, no jitter. Whether you're a vintage gear enthusiast, a music producer hunting for retro textures, or just curious what the dawn of the drum machine sounded like, Rhythm Ace brings a slice of music history to your iPhone.

About

Morphix Synthesizer

This app is a polyphonic morphing wavetable synthesizer that recreates a classic lost instrument. It features a morphing oscillator, state-variable filter, and built-in flanger, allowing for evolving sound textures. It can be used standalone or within a DAW.

Highlights
  • Morphing wavetable oscillator
  • State-variable filter
  • Independent ADSR envelopes
  • Tempo-syncable LFO
  • Built-in stereo flanger
  • 64 factory presets
  • AUv3 plugin support
Features
Read full description

https://youtu.be/pwx72zQD0p8 Morphix - Morphing Wavetable Synthesizer Morphix is a polyphonic morphing wavetable synth and a faithful reconstruction of the lost 2005 FSR Morphite. Its architecture, parameters, and complete 64-patch factory bank were reverse-engineered from the original and rebuilt from scratch with JUCE — now a modern, multi-platform instrument themed after Aleph Void. A morphing oscillator feeds a state-variable filter, an amp VCA, and a stereo flanger, shaped by independent amplitude and filter ADSRs and a tempo-synced LFO. Sweep the morph parameter for evolving, animated textures — from glassy pads to gritty leads — all wrapped in a clean, dark Aleph Void interface. Features • Morphing wavetable oscillator into a state-variable filter (cutoff / resonance / env / keytrack) • Independent amplitude and filter ADSR envelopes • Tempo-syncable LFO routable to morph and cutoff • Built-in stereo flanger • Full pitch section with bipolar tune / fine • 64 factory presets recovered from the original synth • Import / Export your own .vstpreset patches • Branded Aleph Void UI — void palette, violet accent, JetBrains Mono type • AUv3 plug-in for use in GarageBand, AUM, Logic, and other AUv3 hosts Plays in your favorite DAW or stands alone. Built by Aleph Void. https://morphix.alephvoid.com

Screenshots

Rhythm Ace1 screens
Morphix Synthesizer1 screens

Verdict

The call

The clearest difference is price: Rhythm Ace at Free against Morphix Synthesizer's $1.99. Morphix Synthesizer's advantage is rating (3.7 vs 2.0) and update cadence (every 2 weeks vs every 2 months). On review sentiment, 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

Rhythm Ace is free to download; Morphix Synthesizer costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Morphix Synthesizer holds the better App Store score, 3.7 against 2.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

Rhythm Ace ships an update every 2 months, Morphix Synthesizer every 2 weeks. The most recent releases landed on September 24, 2026 and September 7, 2026 respectively.

Scorecard7 real differences · 3 level
Rhythm Ace versus Morphix Synthesizer: the parameters behind the verdict, then further details
ParameterRhythm AceMorphix Synthesizer
PriceFree — better$1.99
Rating2.0 (1 ratings)3.7 (3 ratings) — better
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings13 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhoneiPhone, iPad, iPod, Mac — better
Requires iOS18.013.0 — better
Further details — not scored
Size6 MB14 MB
Age rating4+4+
DeveloperTero AarnioAleph Void LLC

Customer experience

Rhythm Ace

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Morphix Synthesizer

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Rhythm Ace

No in-app purchases

None

Morphix Synthesizer

No in-app purchases

Questions

Is Rhythm Ace free?
Rhythm Ace is free to download, with no in-app purchases.
Is Morphix Synthesizer free?
Morphix Synthesizer costs $1.99, with no in-app purchases.
Which has better reviews, Rhythm Ace or Morphix Synthesizer?
Morphix Synthesizer is rated higher. Rhythm Ace averages 2.0 out of 5 from 1 ratings, while Morphix Synthesizer averages 3.7 from 3 ratings.
Do Rhythm Ace or Morphix Synthesizer have ads?
Neither Rhythm Ace nor Morphix Synthesizer shows ads.
Which is updated more often, Rhythm Ace or Morphix Synthesizer?
Rhythm Ace ships an update every 2 months, and Morphix Synthesizer every 2 weeks. Most recently, Rhythm Ace was updated on September 24, 2026 and Morphix Synthesizer on September 7, 2026.

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