Comparison

S vs Hyper Boost

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

Head to head
About

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.

Highlights
  • Single-screen interface
  • Fast, hands-on patching
  • Vintage 1970s synth sound
  • Dual oscillators
  • Resonant ladder filter
  • Multiple modulation sources
Features
Read full description

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

About

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.

Highlights
  • 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
Read full description

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

S2 screens
Hyper Boost2 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
S versus Hyper Boost: the parameters behind the verdict, then further details
ParameterSHyper Boost
Price$2.99Free — better
Rating2.6 (11 ratings)5.0 (3 ratings) — better
Positive reviews31.3% of reviews—
Number of ratings11 — better3
Update frequencyEvery 7 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.614.0 — better
Further details — not scored
Size7 MB12 MB
Age rating4+4+
DeveloperPaul BetowskiSketch Audio, LLC

Customer experience

S

All ratings11 ratings
Positive27.3%
Neutral27.3%
Negative45.5%
Written reviews16 reviews
Positive31.3%
Neutral25.0%
Negative43.8%

Hyper Boost

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

S

No in-app purchases

2 purchases

Hyper Boost

One-time2
  • Two-week TrialFree
  • Full Unlock$9.99

Questions

Is S free?
S costs $2.99, with no in-app purchases.
Is Hyper Boost free?
Hyper Boost is free to download, with in-app purchases available.
Which has better reviews, S or Hyper Boost?
Hyper Boost is rated higher. S averages 2.6 out of 5 from 11 ratings, while Hyper Boost averages 5.0 from 3 ratings.
Do S or Hyper Boost have ads?
Neither S nor Hyper Boost shows ads.
Which is updated more often, S or Hyper Boost?
S ships an update every 7 months, and Hyper Boost every 6 weeks. Most recently, S was updated on October 7, 2026 and Hyper Boost on September 21, 2026.

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