Comparison

S vs JAX Kryostatic

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

JAX Kryostatic

This audio effect processor freezes and shifts live audio streams in real time. It offers intuitive touch controls for sound design and musical analysis, with a focus on low CPU usage.

Highlights
  • Real-time audio stream freezing
  • Spectrum shifting capabilities
  • Dual stereo FFT waterfall display
  • Touch and slide interface
  • Adjustable freezing intensity
  • Low CPU usage optimization
Features
Read full description

Technobabble: Synchronous polyphasic temporal compression for the coherent transsubstantiation of the phase-modulated frequency spectrum into a cross-dimensional, entropy-resistant acoustic singularity... to put it in simple terms: a baryonic resonance oscillation with fractal phase inversion that deconstructs the continuous time vector within the Hilbert space, freezing it inside an infinite, dimensionless audio event horizon. JAX Kryostatic is an AudioUnit (AUv3). AudioUnits require an audio host application. We produce audio tools exclusively for Apple platforms. The audio effect processor freezes your audio stream in real time. At the heart of its visualization lies an energy correlometer, alongside a dual stereo FFT waterfall display with adjustable flow speed. Using a "Touch and Slide" interface, you can intuitively freeze and shift the live stream's spectrum, visibly - even into extreme ranges. The freezing effect itself is automatic or freely adjustable, ranging from "Soft Iced" to "Hard Iced." So JAX Kryostatic serves equally well as a creative tool for sound design or simply as a musical analysis utility. This AudioUnit is highly optimized for real-time audio processing and very low CPU usage, as its entire graphical visualization is de-coupled and calculated / rendered directly on the GPU. Our new concept involves releasing some of our fully produced songs alongside our FRONTIER SERIES Audio Units. In doing so, we aim to illustrate our new guiding principle: providing musical tools rather than chasing obscure trends of noise production. The Manual is available for download at : https://audio.digitster.com/wp-content/uploads/2026/05/JAX-Kryostatic.pdf

Screenshots

S2 screens
JAX Kryostatic2 screens

Verdict

The call

The clearest difference is price: S at $2.99 against JAX Kryostatic's $12.99. S also leads on rating (2.6 vs 1.0) and ratings volume (11 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

S costs $2.99 and JAX Kryostatic $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

S holds the better App Store score, 2.6 against 1.0. That said, the two scores are not equally well evidenced: S has 11 ratings behind it against 1, so its average is the more settled of the two.

Scorecard4 real differences · 6 level
S versus JAX Kryostatic: the parameters behind the verdict, then further details
ParameterSJAX Kryostatic
Price$2.99 — better$12.99
Rating2.6 (11 ratings) — better1.0 (1 ratings)
Positive reviews31.3% of reviews—
Number of ratings11 — better1
Update frequencyEvery 7 months—
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.6
Further details — not scored
Size7 MB155 MB
Age rating4+4+
DeveloperPaul BetowskiJens Guell

Customer experience

S

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

JAX Kryostatic

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

S

No in-app purchases

None

JAX Kryostatic

No in-app purchases

Questions

Is S free?
S costs $2.99, with no in-app purchases.
Is JAX Kryostatic free?
JAX Kryostatic costs $12.99, with no in-app purchases.
Which has better reviews, S or JAX Kryostatic?
S is rated higher. S averages 2.6 out of 5 from 11 ratings, while JAX Kryostatic averages 1.0 from 1 ratings.
Do S or JAX Kryostatic have ads?
Neither S nor JAX Kryostatic shows ads.

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