Morphix Synthesizer vs SL Echo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Morphing wavetable oscillator
- State-variable filter
- Independent ADSR envelopes
- Tempo-syncable LFO
- Built-in stereo flanger
- 64 factory presets
- AUv3 plugin support
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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
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | Morphix Synthesizer | SL Echo |
|---|---|---|
| Price | $1.99 — better | $6.99 |
| Rating | 3.4 (5 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 2 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 14 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleph Void LLC | VIACHESLAV ZHILTSOV |
Customer experience
Morphix Synthesizer
SL Echo
In-app purchases
Morphix Synthesizer
No in-app purchases
SL Echo
No in-app purchases









