Super Serrated vs PX1 FM Synth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Super Serrated
Create rich, animated saw textures with a versatile supersaw synthesizer. Offers extensive modulation, filtering, and voice control for both standalone use and as an AUv3 plugin in DAWs.
- Supersaw oscillator with selectable saw count
- Resonant ladder-style filter
- Dual ADSR envelopes
- Dual LFOs with tempo sync
- Modulation matrix
- Standalone and AUv3 plugin support
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Super Serrated stacks up to 11 detuned saw waves per voice into huge, wide supersaw leads, pads, and basses. Play it as a standalone synth or load it as an AUv3 plugin in GarageBand, Logic Pro, Cubasis, AUM, Drambo, and other compatible hosts. Sliders instead of knobs keep the whole patch readable at a glance. Oscillator, filter, envelopes, LFOs, modulation, and voice controls are always within reach, with live visual feedback for the envelopes, filter, and LFOs. We play Super Serrated on our live electronic music streams alongside hardware synths. It's made for classic trance, EDM, and synthwave leads, wide pads and stacked chords, detuned unison basses, and brassy stabs. OSCILLATOR - Stereo supersaw oscillator with 1 to 11 saws - Detune, stereo width, unison mix, octave, and level controls - Sine sub-oscillator - Per-voice white noise VOICES - Up to 16 voices, shared between polyphony and unison - Unison adds extra detune spread - Poly, mono, and legato modes - Portamento for glides FILTER - Resonant ladder-style filter, 12 or 24 dB/octave - Low-pass, high-pass, and band-pass modes - Drive and bass boost MODULATION - Two ADSR envelopes - Two LFOs with sine, triangle, saw, square, and random shapes - Free-running or tempo-synced LFO rates - LFO depth, smoothing, bipolar/unipolar range, and reset on note - Modulation matrix with 7 routing slots PLAYING & CONNECTIVITY - Velocity, pitch bend, mod wheel, and channel aftertouch - USB, wired, and Bluetooth MIDI controllers - USB audio interfaces - Runs on iPhone, iPad, and Mac with Apple silicon
PX1 FM Synth
Create rich, wide stereo sounds with a dual-engine FM synthesizer. Explore classic 1980s digital synth tones, from electric pianos to metallic bells, with extensive operator and envelope controls. It functions as a standalone app or an AUv3 plugin for music production.
- Dual independent 6-operator FM engines
- 32 classic FM algorithms
- Per-operator envelopes and pan
- Five macro knobs for sound shaping
- Built-in reverb
- AUv3 plugin support
- Random patch generator
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PX1 is a dual-engine FM synthesizer inspired by the classic 6-operator digital synths of the 1980s. Each engine features six operators, 32 algorithms, and full envelope control — giving you everything from glassy electric pianos and punchy basses to evolving pads and metallic bells. What makes PX1 special is the dual-engine architecture. Two completely independent FM voices run side by side. Copy one engine to the other, make subtle changes, then use the Spread control to place them across the stereo field. The result is a lush, wide sound that a single FM engine simply cannot produce. FEATURES • Two independent 6-operator FM engines • 32 classic FM algorithms • Per-operator envelopes (4 rates + 4 levels) • Per-operator pan for detailed stereo placement • Five macro knobs — Brightness, Touch, Attack, Decay, Spread • Copy/Paste between engines for instant layering • Random patch generator exploring the classic FM sound palette • Built-in reverb (Size, Damp, Amount) • Mono, Legato, and Portamento modes • LFO with triangle, saw, square, and random waveforms • Pitch bend range and transpose controls • Key velocity sensitivity per operator • Keyboard rate scaling and level scaling • Operator Key Sync on/off for consistent or organic attacks AUv3 PLUGIN PX1 works as a standalone instrument and as an Audio Unit v3 plugin. Load it directly inside GarageBand, Logic Pro, AUM, Cubasis, or any AUv3-compatible host. Full parameter automation is supported — record knob movements in your DAW and play them back. DESIGNED FOR MUSICIANS The interface stays close to the original FM programming model that experienced synthesists know, while macro controls make it approachable for anyone. Turn one knob and shape the entire sound; dive into individual operators when you want surgical control. LISTEN TO EXAMPLES Hear PX1 in action — sound demos are available at: https://soundcloud.com/peter-sj-gren/sets/px1-demo Requires no in-app purchases. No subscriptions. No ads. No tracking.
Screenshots
Verdict
The clearest difference is price: Super Serrated at $5.99 against PX1 FM Synth's $14.99. On rating, ratings volume, update cadence and ads 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
Super Serrated costs $5.99 and PX1 FM Synth $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Super Serrated against 5.0 for PX1 FM Synth. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
Super Serrated ships an update every 4 weeks, PX1 FM Synth every 2 weeks. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.
| Parameter | Super Serrated | PX1 FM Synth |
|---|---|---|
| Price | $5.99 — better | $14.99 |
| Rating | 5.0 (2 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 | 2 |
| Update frequency | Every 4 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 18.6 | 17.6 — better |
| Further details — not scored | ||
| Size | 21 MB | 121 MB |
| Age rating | 4+ | 4+ |
| Developer | Wavefold Labs LLC | Peter Sjogren |
Customer experience
Super Serrated
PX1 FM Synth
In-app purchases
Super Serrated
No in-app purchases
PX1 FM Synth
No in-app purchases









