Comparison

JAX DYNAMICS vs SING

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

Head to head
About

JAX DYNAMICS

This audio processing tool functions as a single-band dynamics processor with parallel processing capabilities. It's distributed as an app extension for use within compatible music applications across Apple devices.

Highlights
  • Single band dynamics processor
  • Parallel processing (mix)
  • AudioUnit (AUv3) format
  • Universal app for Apple devices
  • System-wide usage with hosts
Features
Read full description

The JAX DYNAMICS : Limiter is a single band dynamics audio processor and supports parallel processing option (mix) too. The JAX Limiter is a dynamics processor in AudioUnit (AUv3) format. The audio unit itself (an app extension) is embedded into a small demo app. This is required for app distribution on Apple platforms. Installing the app will make the audio unit available for system wide usage with audio unit hosts (music apps), which support loading 3rd party app extensions in AUv3 format. There is a manual for our Dynamics Series Basic located at : https://audio.digitster.com/jax-dynamics-compressor A basic demonstration video for the dynamics series can be seen here : https://youtu.be/hOwM1t6jYes?si=gqlpp6oQRXtUuj8V This app is truly 'universal', meaning, unit is available for : - MacOS (Silicon) - iOS (iPhone) - iPadOS (iPads) - visionOS (Apple Vision Pro) Please note, that AudioUnits (AUv3) require a dedicated supporting host application to perform.

About

SING

This app helps users improve their singing by providing real-time pitch analysis and vocal isolation. It offers tools for mic and speaker optimization and organized track management for practice sessions.

Highlights
  • Real-time pitch analyzer
  • Vocal isolation
  • Mic & speaker optimization
  • Track management
  • Personalized practice
Features
Read full description

SING — VOCAL PRACTICE STUDIO Practise singing with live pitch feedback, reference tracks, local vocal isolation, and precise control over difficult song sections. SING is a vocal practice studio for singers, vocal students, performers, choir members, songwriters, and bedroom producers. See your vocal pitch in real time, compare your voice with a reference track, isolate vocals on your device, change pitch and speed, and practise the exact part of a song you want to improve. SING WITH LIVE PITCH FEEDBACK Use your microphone as a real-time vocal pitch monitor. Watch your pitch while you sing and compare your voice with a reference vocal, melody, or instrumental track. The pitch analyzer can work with: - Your microphone. - A reference vocal. - An instrumental or backing track. - One or two reference tracks in a composition. Use the live pitch display to practise singing in tune, improve note accuracy, and understand where your voice is above or below the target. CALIBRATE ONCE. SING IN SYNC. Measure playback and recording timing from the home screen, then apply the correction globally across SING. The calibration helps align monitoring for headphones, speakers, Bluetooth devices, and external audio equipment. Recalibrate when you change your microphone, headphones, speakers, or other audio equipment. PRACTISE DIFFICULT SONG SECTIONS Select a specific range of a song and practise it repeatedly instead of replaying the entire track. - Loop a phrase or section. - Slow down the tempo. - Change the pitch to suit your vocal range. - Compare your performance with a reference. - Focus on the notes and passages that need work. Use range clipping to create focused vocal exercises from any part of an imported track. ISOLATE VOCALS LOCALLY Split an imported track into vocal and instrumental stems using on-device processing. Create a backing track, practise with the original vocal as a reference, study vocal phrasing, or compare your performance with the original arrangement. Core local audio processing does not require an online account or a cloud upload. BUILD A VOCAL PRACTICE COMPOSITION Import or record audio directly into a composition. Arrange audio tracks on a timeline, move and crop sections, change pitch and speed, and create a practice setup that fits your voice. A composition can contain your reference vocal, instrumental track, recorded takes, and separated stems in one organised workspace. MANAGE YOUR PRACTICE LIBRARY Create, search, import, export, share, and organise compositions in one place. Keep your practice tracks, recordings, backing tracks, and vocal exercises together instead of switching between separate audio apps. WHO IS SING FOR? - Singers practising songs, scales, and difficult vocal passages. - Vocal students working on pitch accuracy and consistency. - Choir members preparing vocal parts. - Performers preparing for auditions or live shows. - Songwriters checking melodies and vocal ideas. - Bedroom producers creating vocal practice tracks. Start with the live pitch analyzer, then create a composition when you are ready to practise with a song. SING is free to try. Optional one-time upgrades may provide more saved compositions and advanced composition, analysis, and export features. AUDIO RIGHTS Only import and share audio that you own or are authorised to use. SING does not provide copyrighted songs and does not bypass streaming-service restrictions.

Screenshots

JAX DYNAMICS4 screens
SING4 screens

Verdict

The call

The clearest difference is price: SING at Free against JAX DYNAMICS's $4.99. SING also leads on update cadence (every 6 days vs every 2 months). JAX DYNAMICS's advantage is rating (3.0 vs 1.0). On ratings volume, ads, in-app purchases 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

SING is free to download; JAX DYNAMICS costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

JAX DYNAMICS holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

JAX DYNAMICS ships an update every 2 months, SING every 6 days. The most recent releases landed on September 22, 2026 and September 15, 2026 respectively.

Scorecard4 real differences · 5 level
JAX DYNAMICS versus SING: the parameters behind the verdict, then further details
ParameterJAX DYNAMICSSING
Price$4.99Free — better
Rating3.0 (2 ratings) — better1.0 (1 ratings)
Number of ratings2 — better1
Update frequencyEvery 2 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size26 MB189 MB
Age rating4+4+
DeveloperJens Guellsanasofthk

Customer experience

JAX DYNAMICS

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

SING

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

In-app purchases

None

JAX DYNAMICS

No in-app purchases

None

SING

No in-app purchases

Questions

Is JAX DYNAMICS free?
JAX DYNAMICS costs $4.99, with no in-app purchases.
Is SING free?
SING is free to download, with no in-app purchases.
Which has better reviews, JAX DYNAMICS or SING?
JAX DYNAMICS is rated higher. JAX DYNAMICS averages 3.0 out of 5 from 2 ratings, while SING averages 1.0 from 1 ratings.
Do JAX DYNAMICS or SING have ads?
Neither JAX DYNAMICS nor SING shows ads.
Which is updated more often, JAX DYNAMICS or SING?
JAX DYNAMICS ships an update every 2 months, and SING every 6 days. Most recently, JAX DYNAMICS was updated on September 22, 2026 and SING on September 15, 2026.

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