S vs Hyper Boost
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
S
This semi-modular synthesizer app for iPad offers a hands-on sound design experience with a single-screen interface for intuitive patching. It delivers a warm, vintage sound inspired by 1970s synthesizers, featuring dual oscillators, resonant filters, and multiple modulation sources.
- Single-screen interface
- Fast, hands-on patching
- Vintage 1970s synth sound
- Dual oscillators
- Resonant ladder filter
- Multiple modulation sources
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S-Modular is a semi-modular synthesiser for iPad, designed for fast, hands-on patching without clutter. Everything is presented on a single screen, making sound design immediate and intuitive. Simply drag from one jack to another to create connections. S-Modular delivers a distinctive vintage sound inspired by classic 1970s synthesis — warm, rich, and full of character. Features Dual oscillators 24 dB/oct ladder filter Resonant high-pass and low-pass filters Two LFOs Four-step CV sequencer Four-track mixer Audio and CV splitter Two AHR envelope generators Delay effect
Hyper Boost
Enhance your audio with a versatile two-band tone control and a powerful soft clipper. Achieve bold saturation or precise mix adjustments with adjustable clipping algorithms and real-time visualizers. Offers smooth transitions, CPU-saving bypass, and cross-platform compatibility.
- Two-band tone control with tilt filters
- Soft clipper with adjustable drive and ceiling
- Three clipping algorithms (Juicy, Tight, Hardest)
- Real-time curve visualizer
- Morph settings for smooth transitions
- AUv3 plugin and standalone app support
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Simple, but deadly. Hyper Boost combines a two-band tone control with a hard-hitting soft clipper. Use it early in the chain as a bold saturation effect or throw it on late for subtle, precision mix adjustments. A power-up for your sound. Tone Control - Retro-inspired treble and bass tilt filters. Gentle, not surgical - Adjustable center frequency - Three configurations: Pre (EQ before clipper), Post (EQ after clipper), Emphasis (saturate a frequency band while keeping flat response overall) - Output trim Clipper - Drive input up to +36 dB - Adjustable ceiling and edge for precise control over the clipping curve - Three clipping algorithms: - Juicy: reproduces an infamous stock clipper - Tight: adapted from a classic soft-knee limiter - Hardest: loud and brash hardware-style clipping - Real-time curve visualizer with max peak metering Core Features - Morph Settings for smooth transitions between two complete configurations - Auto Bypass saves CPU when input is silent - AB settings comparison - HQ mode with 4x oversampling and ADAA - One-click loudness matching - All parameters automatable with precise playback - Light and dark interface modes - Internal undo/redo - Auto gain - Use your AUv3 plug-in in a compatible host app or DAW - Standalone app includes support, manual links and in-app purchase options for license purchase Two-week trial included, one-time purchase for full unlock. Unlock your plug-in via in-app purchase from the standalone app or activate in the plug-in using an existing desktop license. Your in-app purchase activates the plug-in on all of your iOS devices. Owners can claim a crossgrade code in the standalone app to receive a discount on a desktop license. Check out our YouTube: https://www.youtube.com/@sketchaudio Read the manuals: https://sketchaudio.com/manuals/
Screenshots
Verdict
The clearest difference is price: Hyper Boost at Free against S's $2.99. Hyper Boost also leads on rating (5.0 vs 2.6) and update cadence (every 6 weeks vs every 7 months). S's advantage is in-app purchases (none vs 2) and ratings volume (11 vs 3). On ads, device support and iOS requirement 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
Hyper Boost is free to download; S costs $2.99 up front. Hyper Boost sells 2 one-off in-app purchases. S asks for nothing beyond the download.
Hyper Boost holds the better App Store score, 5.0 against 2.6. Both are backed by a comparable volume of ratings — 11 and 3 respectively.
S ships an update every 7 months, Hyper Boost every 6 weeks. The most recent releases landed on October 7, 2026 and September 21, 2026 respectively.
| Parameter | S | Hyper Boost |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 2.6 (11 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 31.3% of reviews | — |
| Number of ratings | 11 — better | 3 |
| Update frequency | Every 7 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Paul Betowski | Sketch Audio, LLC |
Customer experience
S
Hyper Boost
In-app purchases
S
No in-app purchases
Hyper Boost
- Two-week TrialFree
- Full Unlock$9.99









