Comparison

Morphix Synthesizer vs SL Echo

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

Head to head
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

About

SL Echo

This audio effect app provides animated delay and space for musical decisions on iPad. Easily adjust time, feedback, and tone for various repeat styles, while maintaining a clear dry signal with stereo width and ducking. It supports AUv3 integration with popular music hosts.

Highlights
  • Animated delay and space effects
  • Adjustable time and feedback
  • Tone shaping controls
  • Stereo width and ducking
  • AUv3 support
  • Standalone preview mode
  • Factory and user presets
Features
Read full description

SL Echo is a focused AUv3 delay effect designed for fast musical decisions on iPad. Move from a close vocal pocket to wide, evolving repeats without navigating complex pages. • Time and feedback for slapback or long trails • Tone shaping for darker or brighter repeats • Stereo width and ducking for a clear dry signal • Factory presets and local user presets • AUv3 support for compatible iPad music hosts Works as a standalone preview app and as an AUv3 effect in GarageBand, AUM, Cubasis, BeatMaker 3 and other compatible hosts.

Screenshots

Morphix Synthesizer1 screens
SL Echo3 screens

Verdict

The call

The clearest difference is rating: SL Echo at 5.0 against Morphix Synthesizer's 3.4. SL Echo also leads on update cadence (every 5 days vs every 2 weeks). Morphix Synthesizer's advantage is price ($1.99 vs $6.99) and ratings volume (5 vs 1). On ads, in-app purchases, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Morphix Synthesizer costs $1.99 and SL Echo $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

SL Echo holds the better App Store score, 5.0 against 3.4. That said, the two scores are not equally well evidenced: Morphix Synthesizer has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Morphix Synthesizer ships an update every 2 weeks, SL Echo every 5 days. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

Scorecard5 real differences · 5 level
Morphix Synthesizer versus SL Echo: the parameters behind the verdict, then further details
ParameterMorphix SynthesizerSL Echo
Price$1.99 — better$6.99
Rating3.4 (5 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings5 — better1
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size14 MB18 MB
Age rating4+4+
DeveloperAleph Void LLCVIACHESLAV ZHILTSOV

Customer experience

Morphix Synthesizer

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

SL Echo

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Morphix Synthesizer

No in-app purchases

None

SL Echo

No in-app purchases

Questions

Is Morphix Synthesizer free?
Morphix Synthesizer costs $1.99, with no in-app purchases.
Is SL Echo free?
SL Echo costs $6.99, with no in-app purchases.
Which has better reviews, Morphix Synthesizer or SL Echo?
SL Echo is rated higher. Morphix Synthesizer averages 3.4 out of 5 from 5 ratings, while SL Echo averages 5.0 from 1 ratings.
Do Morphix Synthesizer or SL Echo have ads?
Neither Morphix Synthesizer nor SL Echo shows ads.
Which is updated more often, Morphix Synthesizer or SL Echo?
Morphix Synthesizer ships an update every 2 weeks, and SL Echo every 5 days. Most recently, Morphix Synthesizer was updated on October 6, 2026 and SL Echo on September 30, 2026.

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