Comparison

DirectionalEQ vs Stone Echo

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

Head to head
About

DirectionalEQ

This audio plugin allows independent equalization of different directions within the stereo field. It offers five bands with advanced filter types, enabling precise adjustments to specific audio directions for a more nuanced sound. Designed for use within compatible music production host apps.

Highlights
  • Independent equalization of stereo field directions
  • Five bands with state-of-the-art filter types
  • 64-bit processing and 2x oversampling
  • Specify direction for each band's operation
  • Works as an Audio Unit or Inter App Audio plugin
Features
Read full description

Traditional EQs influence the spectrum of the whole stereo field simultaneously. L/R or Mid-Side-EQs allow you to treat the two channels or the mid and the side signal simultaneously. DirectionalEQ takes this concept one big step further: now you can equalize all directions in the stereo field independently! With five bands, each of them providing state-of-the-art filter types (including 64 bit processing and 2x oversampling) plus the unique ability to specify the direction in which the channel is operational. So you need more bass at 2 o’clock, less midrange at 11 o’clock and a bit more treble from the left? No problem at all, that’s exactly what this EQ has been made for! This app is intended to work as an Audio Unit or Inter App Audio plugin within a compatible host app like Garageband, Cubasis or Auria.

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
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

Screenshots

DirectionalEQ2 screens
Stone Echo2 screens

Verdict

The call

The clearest difference is rating: DirectionalEQ at 3.6 against Stone Echo's 2.8. DirectionalEQ also leads on update cadence (every 19 months vs every 38 months) and ratings volume (14 vs 4). Stone Echo's advantage is price ($2.99 vs $9.99) and review sentiment (50% vs 33%). 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

DirectionalEQ costs $9.99 and Stone Echo $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

DirectionalEQ holds the better App Store score, 3.6 against 2.8. Both are backed by a comparable volume of ratings — 14 and 4 respectively. Written reviews complicate that: 33% of DirectionalEQ's written reviews are positive against 50% of Stone Echo's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

DirectionalEQ ships an update every 19 months, Stone Echo every 38 months. Both last shipped on October 7, 2026.

Scorecard5 real differences · 5 level
DirectionalEQ versus Stone Echo: the parameters behind the verdict, then further details
ParameterDirectionalEQStone Echo
Price$9.99$2.99 — better
Rating3.6 (14 ratings) — better2.8 (4 ratings)
Positive reviews33.3% of reviews50.0% of reviews — better
Number of ratings14 — better4
Update frequencyEvery 19 months — betterEvery 38 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.3 — better10.0
Further details — not scored
Size11 MB9 MB
Age rating4+4+
DeveloperChristian SiedschlagAleksandar Mlazev

Customer experience

DirectionalEQ

All ratings14 ratings
Positive57.1%
Neutral14.3%
Negative28.6%
Written reviews6 reviews
Positive33.3%
Neutral16.7%
Negative50.0%

Stone Echo

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

In-app purchases

None

DirectionalEQ

No in-app purchases

None

Stone Echo

No in-app purchases

Questions

Is DirectionalEQ free?
DirectionalEQ costs $9.99, with no in-app purchases.
Is Stone Echo free?
Stone Echo costs $2.99, with no in-app purchases.
Which has better reviews, DirectionalEQ or Stone Echo?
DirectionalEQ is rated higher. DirectionalEQ averages 3.6 out of 5 from 14 ratings, while Stone Echo averages 2.8 from 4 ratings.
Do DirectionalEQ or Stone Echo have ads?
Neither DirectionalEQ nor Stone Echo shows ads.
Which is updated more often, DirectionalEQ or Stone Echo?
DirectionalEQ ships an update every 19 months, and Stone Echo every 38 months. Most recently, DirectionalEQ was updated on October 7, 2026 and Stone Echo on October 7, 2026.

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