Comparison

CrossOver Filter vs JAX Stereo Tool (AU)

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

Head to head
About

CrossOver Filter

Design and simulate car stereo or home audio crossover filters with professional precision. Calculate various filter types, Q factors, and component values. Includes signal generation and project sharing features.

Highlights
  • Crossover filter calculation (2-way, tweeter, mid-range, subwoofer)
  • Selectable Q factor of Merit (Butterworth, Bessel, etc.)
  • Zobel and Speaker Attenuation calculation
  • Notch circuit calculation
  • Component value calculation (resistors, coils, capacitors)
  • Speaker cable attenuation and resistance calculation
  • Signal generator (frequency sweep, noise)
  • Project PDF/image generation and sharing
Features
Read full description

Designs and simulates the Crossover Filter of your car stereo system or home in a simple and professional way at the same time. Features and Functions: • Crossover Filter Calculation for Two-Way 6 / 12 / 18 and 24dB / octave. • Crossover Filter Calculation for Tweeter to 6 / 12 / 18 and 24dB / octave. • Crossover Filter Calculation for Mid-range to 6 / 12 and 18dB / octave. • Crossover Filter Calculation for Subwoofer / Woofer to 6 / 12 / 18 and 24dB / octave. Ability to select the "Q factor of Merit" in Two-Way, Tweeter and Subwoofer / Woofer (Butterworth, Bessel, Chebyshev, Linkwitz-Riley and Linear Phase). • Zobel Circuit Calculation. • Speaker Attenuation Calculation. • "Check Projects" of filters already existing. • Notch Circuit Parallel Calculation. • Notch Circuit Series Calculation. • Calculating Resistances, Coils and Capacitors in series or parallel connections. • Calculation Speaker Cable Attenuation and Cable Resistance with selection of metal cable (Copper, OFC Copper, LC-OFC Copper, Tin-Plated Copper, Nichel-Plated Copper, Silver and Aluminium). • Conversion table for AWG / mm / mm2. • Signal Generator, slide to select the Frequency from 20Hz to 20KHz, Sweep Up and Sweep Down to 20Hz/20KHz, Ascending tones, Descending tones, Pink Noise and White Noise. • Assembly diagram of Crossover. • Generates PDF files or image files to share or save your project. • Sharing of projects through Mail, iMessage and Social networks. • Saving of project in Photo, iBooks, Note, Dropbox, Google Drive, Evernote, etc. • Printing of project.

About

JAX Stereo Tool (AU)

This audio processing tool allows users to visually manipulate the stereo image of digital audio. It functions as a mastering effect, enabling real-time adjustment of stereo width and the recovery of mono compatibility. The app includes a correlograph for visual feedback and optimization.

Highlights
  • Visual stereo image manipulation
  • Real-time stereo width adjustment
  • Mono compatibility recovery
  • Integrated correlograph for visual feedback
  • Audio Unit (AUv3) plugin format
  • System-wide availability
Features
Read full description

JAX Stereo Tool is a visual Audio Unit plugin for manipulating the stereo image of digital audio. The distribution app comes with an embedded plug-in (Audio Unit) that is available system-wide when you install the app. You should be able to use it with most supporting host applications. Audio Units are Apple's recommended method for providing shared audio effects for applications and audio editors. You can load the plugin into any host application that supports at least stereophonic audio effect plug-ins (in Audio Unit format - AUv3) with its own user interface. JAX Stereo Tool has its main use as a mastering effect, that allows you to modify the stereo image of your audio by narrowing or widening it in a controlled manner. That is, the stereo output can be continuously adjusted in the basic function of pure mono to very wide stereo. This happens in real time and you can observe the result with the integrated correlograph, controlling and optimizing the audio thanks to this helpful additional visual information. One of the special functions of JAX Stereo Toolis to recover lost mono-compatibility. This technique is conceptually quite simple and effective but somewhat difficult to understand. Please read the manual for further details. The manual is shipped with the app or available on the product website at https://audio.digitster.com

Screenshots

CrossOver Filter4 screens
JAX Stereo Tool (AU)4 screens

Verdict

The call

The clearest difference is review sentiment: JAX Stereo Tool (AU) at 80% against CrossOver Filter's 33%. JAX Stereo Tool (AU) also leads on rating (4.4 vs 2.7) and update cadence (every 11 days vs every 4 months). CrossOver Filter's advantage is price ($1.99 vs $5.99) and iOS requirement (8.2 vs 12.0). 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

CrossOver Filter costs $1.99 and JAX Stereo Tool (AU) $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

JAX Stereo Tool (AU) holds the better App Store score, 4.4 against 2.7. That said, the two scores are not equally well evidenced: JAX Stereo Tool (AU) has 27 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 33% of CrossOver Filter's written reviews are positive against 80% of JAX Stereo Tool (AU)'s.

UpkeepUpdate frequency

CrossOver Filter ships an update every 4 months, JAX Stereo Tool (AU) every 11 days. The most recent releases landed on October 6, 2026 and October 12, 2026 respectively.

Scorecard6 real differences · 4 level
CrossOver Filter versus JAX Stereo Tool (AU): the parameters behind the verdict, then further details
ParameterCrossOver FilterJAX Stereo Tool (AU)
Price$1.99 — better$5.99
Rating2.7 (3 ratings)4.4 (27 ratings) — better
Positive reviews33.3% of reviews80.0% of reviews — better
Number of ratings327 — better
Update frequencyEvery 4 monthsEvery 11 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.2 — better12.0
Further details — not scored
Size28 MB10 MB
Age rating4+4+
DeveloperPasquale PuglisiJens Guell

Customer experience

CrossOver Filter

All ratings3 ratings
Positive33.3%
Neutral33.3%
Negative33.3%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

JAX Stereo Tool (AU)

All ratings27 ratings
Positive85.2%
Neutral0.0%
Negative14.8%
Written reviews10 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

None

CrossOver Filter

No in-app purchases

None

JAX Stereo Tool (AU)

No in-app purchases

Questions

Is CrossOver Filter free?
CrossOver Filter costs $1.99, with no in-app purchases.
Is JAX Stereo Tool (AU) free?
JAX Stereo Tool (AU) costs $5.99, with no in-app purchases.
Which has better reviews, CrossOver Filter or JAX Stereo Tool (AU)?
JAX Stereo Tool (AU) is rated higher. CrossOver Filter averages 2.7 out of 5 from 3 ratings, while JAX Stereo Tool (AU) averages 4.4 from 27 ratings.
Do CrossOver Filter or JAX Stereo Tool (AU) have ads?
Neither CrossOver Filter nor JAX Stereo Tool (AU) shows ads.
Which is updated more often, CrossOver Filter or JAX Stereo Tool (AU)?
CrossOver Filter ships an update every 4 months, and JAX Stereo Tool (AU) every 11 days. Most recently, CrossOver Filter was updated on October 6, 2026 and JAX Stereo Tool (AU) on October 12, 2026.

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