Comparison

NoteHound 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

NoteHound

Features
Read full description

NoteHound is the music practice app for musicians who learn by ear. Slow any song to 0.1× without dropping the key. Loop the trickiest bar with sample-accurate A-B markers and a count-in click. Transcribe what you hear onto a piano roll, a 4-to-8-string guitar tab, or a live fretboard. Export to MIDI, PDF, MusicXML, plain-text tab, or a ZIP bundle for your teacher. No subscription. No account. Your audio and your transcriptions stay on your device. FEATURES SLOW DOWN MUSIC • 0.1× to 3.0× variable speed • Pitch-preserving time-stretch — the key never changes, even at the extremes • Speed ramp: automatically walk a loop from slow to performance tempo over n repetitions • Tap tempo and BPM detection • Tempo-map aware — handles songs that change tempo A-B LOOPING & PRACTICE TOOLS • Sample-accurate loop boundaries on the waveform • Count-in beats and pre-roll bar so you join the loop on the downbeat • Per-loop speed settings • Named sections (verse / chorus / solo / bridge) painted onto the waveform • Audio notes — pin a voice memo anywhere on the waveform (a fingering cue, a practice reminder, a note from a teacher) and the recording auto-plays when the playhead reaches that point • Practice tracking with mastery stages: learning → practising → up-to-speed → mastered • Per-loop attempt history with max-speed-reached PIANO ROLL EDITOR • Tap notes onto a quantised grid; drag, multi-select, group, draw • Audio sync — your transcription follows the recording bar by bar • Independent display transpose so you can read in any key • Plays through nine built-in synth voices LIVE FRETBOARD VIEW • Tap a note, see exactly where it lives on the neck • Multi-string highlighting for chord shapes • Adapts automatically to the project's tuning (standard, drop D, drop C, DADGAD, baritone, 7- and 8-string) • Full-fingerboard or focused-range display • Pairs with the tab editor — every note tapped on the tab lights up on the fretboard, and vice versa GUITAR TAB EDITOR • 4 to 8 strings, any tuning • 25+ articulations: bends, slides, hammer-ons, pull-offs, harmonics, palm mutes, ghost notes, dead notes, vibrato, trills, grace notes, tied notes, let-ring • Automatic fret-position suggestions based on the previous and next notes • Audio sync with the recording so the tab cursor tracks playback • Works for guitar, bass, baritone guitar, 7- and 8-string electric, ukulele 9-INSTRUMENT MULTI-TOUCH KEYBOARD • Acoustic piano, electric piano, Rhodes, organ, synth pad, strings, bass, guitar, vibraphone • Velocity-sensitive on supported devices • Doubles as a real-time MIDI-input target MIDI • Class-compliant USB and Bluetooth MIDI controllers — plug in, no drivers, no setup • Learn-mode mapping for any control to any parameter (foot pedal → play/pause, knob → speed, pad → loop toggle) • Real-time note input straight to the piano roll • MIDI file import preserves notes, tempo map, and section markers EXPORT • MIDI, PDF, MusicXML, plain-text tab, .tab, or a ZIP bundle of all of them • Hand a transcription to any DAW or notation app: Logic Pro, Ableton Live, Sibelius, Dorico, MuseScore, Finale, Guitar Pro FREE vs PRO Free includes two starter projects, basic A-B looping, the on-screen keyboard, and the 0.25× to 1.5× speed range. NoteHound Pro is a one-time $4.99 unlock — no subscription, restore on every device with the same Apple ID. Pro adds: • Unlimited projects • Full 0.1× to 3.0× speed range • Piano roll editor • Guitar tab editor + live fretboard view • MIDI input and MIDI file import • Every export format • Speed ramp, named sections, audio notes per section DESIGNED FOR Self-taught guitarists, pianists, and bassists. Music students. Music teachers preparing materials. Producers reverse-engineering a sample. Drummers learning fills. Anyone who learns songs by ear. Requires iPhone or iPad on iOS 17 or later. No account needed.

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

NoteHound4 screens
JAX Kryostatic2 screens

Verdict

The call

The clearest difference is price: NoteHound at Free against JAX Kryostatic's $12.99. JAX Kryostatic's advantage is in-app purchases (none vs 1). 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

NoteHound is free to download; JAX Kryostatic costs $12.99 up front. NoteHound sells 1 one-off in-app purchase. JAX Kryostatic asks for nothing beyond the download.

Scorecard2 real differences · 7 level
NoteHound versus JAX Kryostatic: the parameters behind the verdict, then further details
ParameterNoteHoundJAX Kryostatic
PriceFree — better$12.99
Rating—1.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 9 days—
AdsNoNo
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better17.6
Further details — not scored
Size109 MB155 MB
Age rating4+4+
DeveloperFrancesco FarruggiaJens Guell

In-app purchases

1 purchases

NoteHound

One-time1
  • NoteHound Pro$9.99
None

JAX Kryostatic

No in-app purchases

Questions

Is NoteHound free?
NoteHound is free to download, with in-app purchases available.
Is JAX Kryostatic free?
JAX Kryostatic costs $12.99, with no in-app purchases.
Do NoteHound or JAX Kryostatic have ads?
Neither NoteHound nor JAX Kryostatic shows ads.

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