Comparison

Stone Echo vs JAX DYNAMICS

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

Head to head
About

Stone Echo

This app creates a unique echo effect with adjustable frequency modulation, inspired by Mayan pyramid acoustics. It offers musical and experimental soundscapes, functioning as a standalone application or an AUV3 plugin.

Highlights
  • Frequency changing echo effect
  • Phase modulated frequency
  • Standalone app and AUV3 plugin
  • Adjustable time, feedback, and level
  • UFO mode for experimental sounds
Features
Currently charting
Read full description

Echo effect Audio Unit V3 inspired by the mayan pyramids acoustic echo. I come up with a complex phase modulated frequency of the echo so you can change it’s frequency signature. It is kind of changing the material of the reflective surface and I called it “Stone F”. I have made the echo to sound more music friendly to me but there is button called “UFO” and if you press it the effect is more close to the mayan just shifting the frequency backwards (I liked that better). You can also control the feedback of the phase modulation. The effect can work as a stand alone app and as an audio unit AUV3 plug-in. Stone Echo is an effect that is heavy on the CPU Controls: - Time - time offset of the echo - Stone F - frequency response of the echo - Feedback - echo feedback - Level - the volume of the echo - UFO - heavy modulated echo

About

JAX DYNAMICS

This audio processing tool offers a single-band dynamics processor with versatile stereo operation modes, including independent and linked mid/side processing. It also features a parallel processing option for enhanced audio manipulation. The tool is distributed as an app extension for use within compatible music applications.

Highlights
  • Single-band dynamics processor
  • Multiple stereo operation modes
  • Independent and linked mid/side processing
  • Parallel processing (mix) option
  • AudioUnit (AUv3) format
  • Universal app for macOS, iOS, iPadOS, visionOS
Features
Read full description

The JAX DYNAMICS : Compressor is a single band dynamics audio processor and supports different stereo operation modi (like independent stereo, linked stereo, independent mid/side and linked mid/side processing) and has a parallel processing option (mix) too. The JAX Compressor 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.

Screenshots

Stone Echo2 screens
JAX DYNAMICS4 screens

Verdict

The call

The clearest difference is review sentiment: JAX DYNAMICS at 100% against Stone Echo's 50%. JAX DYNAMICS also leads on rating (3.7 vs 2.8) and update cadence (every 2 months vs every 38 months). Stone Echo's advantage is chart position (#191 vs unranked) and price ($2.99 vs $4.99). On ratings volume, ads, in-app purchases and monetization model 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

Stone Echo costs $2.99 and JAX DYNAMICS $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, 3.7 against 2.8. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews point the same way: 50% of Stone Echo's written reviews are positive against 100% of JAX DYNAMICS's.

UpkeepUpdate frequency

Stone Echo ships an update every 38 months, JAX DYNAMICS every 2 months. The most recent releases landed on August 14, 2026 and September 22, 2026 respectively.

Scorecard6 real differences · 5 level
Stone Echo versus JAX DYNAMICS: the parameters behind the verdict, then further details
ParameterStone EchoJAX DYNAMICS
Price$2.99 — better$4.99
Rating2.8 (4 ratings)3.7 (3 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings4 — better3
Update frequencyEvery 38 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#191 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better14.0
Further details — not scored
Size9 MB26 MB
Age rating4+4+
DeveloperAleksandar MlazevJens Guell

Customer experience

Stone Echo

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

JAX DYNAMICS

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stone Echo

No in-app purchases

None

JAX DYNAMICS

No in-app purchases

Questions

Is Stone Echo free?
Stone Echo costs $2.99, with no in-app purchases.
Is JAX DYNAMICS free?
JAX DYNAMICS costs $4.99, with no in-app purchases.
Which has better reviews, Stone Echo or JAX DYNAMICS?
JAX DYNAMICS is rated higher. Stone Echo averages 2.8 out of 5 from 4 ratings, while JAX DYNAMICS averages 3.7 from 3 ratings.
Do Stone Echo or JAX DYNAMICS have ads?
Neither Stone Echo nor JAX DYNAMICS shows ads.
Which is updated more often, Stone Echo or JAX DYNAMICS?
Stone Echo ships an update every 38 months, and JAX DYNAMICS every 2 months. Most recently, Stone Echo was updated on August 14, 2026 and JAX DYNAMICS on September 22, 2026.

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