Comparison

Retromulator vs Aether Synth

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

Head to head
About

Retromulator

This app recreates legendary vintage synthesizers, samplers, and keyboards through accurate emulation. It functions as a standalone application or an AUv3 plugin, offering classic electronic music hardware sounds on iOS devices.

Highlights
  • Cycle-accurate hardware emulation
  • AUv3 plugin support
  • Standalone app functionality
  • Full MIDI control
  • ROM firmware loading
  • Background audio support
Features
Currently charting
Read full description

Retromulator is a multi-core retro hardware emulation app and AUv3 plug-in that brings legendary synthesizer, sampler, and keyboard cores back to life through authentic low-level emulation. Each core runs its actual firmware, physical model, or sample data — delivering the unmistakable character of the hardware that defined electronic music from the early 80s through the 2000s. — EMULATED CORES — VIRTUAL ANALOG SYNTHS Firmware-level chip emulation, enabled with the 56k cores option (requires M1 iPad or iPhone 15 Pro or newer): • Access Virus A, B and C — Motorola DSP 56300 recreation • Access Virus TI / TI2 / Snow — Motorola DSP 56300 recreation • Clavia Nord Lead 2X — Motorola DSP 56300 recreation • Waldorf microQ — Motorola DSP 56300 recreation • Waldorf Microwave XT — Motorola DSP 56300 recreation • Roland JP-8000 and JP-8080 — JE-8086 core by Giulio Zausa ANALOG SYNTHS • Oberheim Matrix-1000 — original firmware on an emulated Motorola 6809 board driving six CEM3396 voice models, with ROM banks 2 to 9 from the patch EPROM, a MIDI CC for each of the 96 patch parameters and LFO sync to the host tempo or MIDI clock FM SYNTHESIS • Yamaha DX7 — original chip set emulation, based on VDX7 by Charles Chiaccona • Yamaha OPL3 — Nuked OPL3 cycle-accurate FM by Nuke.YKT GM / GS SOUND MODULES • 88emu — Roland SC-88, SC-88VL, SC-88Pro, SC-8850 and SC-55mkII boards, emulation by Giulio Zausa, with GS variation, map and rhythm handling, program and drum kit names read straight from the board ROM, 16-part multitimbral operation, and a Standard MIDI File player with offline rendering to WAV or AAC. CHIPTUNE • Commodore 64 SID 6581/8580 — based on reSID. 3-voice polyphony, 8580 chip model with high-quality RESAMPLE, GoatTracker .sng / .ins bank loading (GTS3/4/5, GTI3/4/5) and .sid file import (PSID/RSID), full macro playback engine (wavetable, pulsetable, filtertable, speedtable) and live MIDI control of cutoff (CC 74), resonance (CC 71), pulse width (CC 75), vibrato (CC 1) and pitch bend. • Ayumi (AY-3-8910 / YM2149) — the PSG behind the ZX Spectrum, Amstrad CPC, Atari ST and MSX. Ayumi emulation by Peter Sovietov with the Ym2149Synth voice engine, 3-voice polyphony, switchable AY / YM engine, .ay patch loading, Factory and User banks, and 11 live CC controls. ORGAN • Hammond B3 with Leslie speaker — OpenB3, based on the setBfree engine by Michele Perrone. Upper, lower and pedal drawbars, percussion, vibrato and chorus, overdrive, reverb, three Leslie cabinets, keyboard split and .fxp presets ELECTRIC PIANO AND SAMPLER • Wurlitzer 200A — OpenWurli physical modelling by hal0zer0 (Rust ported to C++ by discoDSP) • Akai S1000 — SFZero sample engine by Steve Folta, with Bliss Sampler support and resampling engine by discoDSP (SF2 / SFZ / ZBP / ZBB) — KEY FEATURES — • Native AUv3 plug-in for AUM, Cubasis, GarageBand, Logic Pro and more • Standalone app for iPhone and iPad • Full MIDI control: CC, mod wheel, expression, pitch bend • 8-point sinc interpolation for sample playback • Auto-slice drum mapping and global retuning via MIDI • ROM firmware loading from original hardware • Background audio, iCloud and Files app integration • Optimised interpreter compatible with the iOS App Store sandbox

About

Aether Synth

This music creation app offers a professional synthesizer engine with dual-layer sound design and rhythmic motion. It can be used as a standalone workstation or as an AUv3 instrument within compatible iOS hosts for recording and production.

Highlights
  • AUv3 instrument support
  • Standalone synth workstation
  • Dual preset layering
  • Melodic and drum sequencers
  • Sampler tools
  • Multitrack audio workspace
  • Arpeggiator and motion controls
Read full description

Aether Synth is an AUv3 synthesizer, sequencer and sampler for iPhone and iPad, built for creating expressive sounds that move. Start with a sound, combine two sounds into something new, introduce motion, build a pattern, capture a sample, or simply play. Aether brings synthesis, sequencing, sampling and performance together in one instrument designed to keep ideas moving. CREATE YOUR OWN SOUND Build rich synth patches for pads, basses, leads, textures, atmospheres and evolving sounds. Aether is designed to make sound creation immediate. Shape a patch directly, explore presets for inspiration, or use Random Sound to discover combinations you might not have reached manually. The result can become a finished sound or the starting point for something completely different. DUAL — TWO SOUNDS BECOME ONE Dual lets you combine two independent sounds into a new composite instrument. Choose a sound for A. Choose another for B. Blend between them and shape the result. The two sides can complement each other, contrast with each other, or create something that neither patch produces alone. Save your favorite Blends and return to them later. MAKE SOUNDS MOVE Aether is built around motion as part of the instrument. Use Motion and Random Motion to animate sound over time and create patches that evolve rather than remain static. Movement can be subtle and organic or become a major rhythmic part of the sound. This makes Aether especially suited to evolving pads, shifting textures, rhythmic sounds and patches that respond like performances rather than snapshots. SEQUENCE IDEAS Turn sounds into patterns with Aether's built-in sequencer. Create melodic and rhythmic phrases, experiment with different rates and musical feels, and develop ideas without leaving the instrument. The arpeggiator provides another immediate way to transform held notes and chords into movement, while tempo synchronization keeps rhythmic material locked to the music. SAMPLING Capture and work with audio directly inside Aether. Use sampling alongside synthesis to bring recorded material into the same creative environment as your patches, patterns and performances. A sample can become part of a larger musical idea instead of living in a separate workflow. PERFORM Aether is designed to be played. Use the keyboard and performance controls to shape sounds in real time, then connect a MIDI controller when you want a more traditional playing experience. Velocity, sustain and expressive controls allow patches to respond dynamically instead of behaving like static presets. DISCOVER INSTEAD OF SEARCHING Sometimes you know exactly what sound you want. Sometimes you don't. Random Sound and Random Motion make exploration part of the workflow. Generate a new direction, keep what works, reshape it, combine it with another sound in Dual, and continue from there. The goal is not randomness for its own sake. It is getting from a blank idea to something musically useful quickly. STANDALONE OR AUV3 Use Aether as a standalone instrument on iPhone and iPad, or load it as an AUv3 instrument inside compatible hosts and DAWs. That means the same sound-design environment can work as an instrument on its own or become part of a larger mobile production setup. BUILT FOR MUSICIANS Aether brings together: • Synthesizer sound design • Dual layered instruments and saved Blends • Motion and evolving sound • Random Sound and Random Motion • Preset exploration • Sequencing • Arpeggiation • Sampling • Performance controls • MIDI • Standalone operation • AUv3 plugin support Whether you're designing an evolving ambient texture, building a bass or lead, creating a rhythmic patch, experimenting with layered sounds, or starting a new musical idea from scratch, Aether is designed to keep the distance between inspiration and sound as short as possible. Create a sound. Make it move. Turn it into music.

Screenshots

Retromulator1 screens
Aether Synth4 screens

Verdict

The call

The clearest difference is price: Aether Synth at $2.99 against Retromulator's $19.99. Aether Synth also leads on review sentiment (67% vs 50%). Retromulator's advantage is chart position (#189 vs unranked) and iOS requirement (15.0 vs 17.0). On update cadence, ads, in-app purchases and monetization model 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

Retromulator costs $19.99 and Aether Synth $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Retromulator ships an update every 3 days, Aether Synth every 6 days. Both last shipped on October 18, 2026.

Scorecard4 real differences · 7 level
Retromulator versus Aether Synth: the parameters behind the verdict, then further details
ParameterRetromulatorAether Synth
Price$19.99$2.99 — better
Rating—4.7 (9 ratings) — better
Positive reviews50.0% of reviews66.7% of reviews — better
Number of ratings—9 — better
Update frequencyEvery 3 days — betterEvery 6 days
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#189 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size83 MB33 MB
Age rating4+4+
DeveloperDiscoDSP LLCJacob Kirk

Customer experience

Retromulator

Written reviews6 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Aether Synth

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews6 reviews
Positive66.7%
Neutral16.7%
Negative16.7%

In-app purchases

None

Retromulator

No in-app purchases

None

Aether Synth

No in-app purchases

Questions

Is Retromulator free?
Retromulator costs $19.99, with no in-app purchases.
Is Aether Synth free?
Aether Synth costs $2.99, with no in-app purchases.
Do Retromulator or Aether Synth have ads?
Neither Retromulator nor Aether Synth shows ads.
Which is updated more often, Retromulator or Aether Synth?
Retromulator ships an update every 3 days, and Aether Synth every 6 days. Most recently, Retromulator was updated on October 18, 2026 and Aether Synth on October 18, 2026.

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