Comparison

Stone Echo vs PhaseX

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
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

PhaseX

This app offers a stereo phaser audio effect with three classic modes: MXR Phase 90, Phase 45, and Shin-ei Uni-Vibe. It allows for versatile sound shaping with simple parameters, providing classic and modern phaser sounds, including stereo phasing/vibrato as an alternative to chorus effects.

Highlights
  • Stereo phaser audio effect
  • Three classic modes (MXR Phase 90, Phase 45, Uni-Vibe)
  • Simple, versatile parameters
  • Modern phaser sound extensions
  • Stereo phasing/vibrato alternative to chorus
Features
Read full description

PhaseX is an interpretation of classic phaser effects with beautiful stereo sound. It offers 3 basic modes: MXR Phase 90, Phase 45 and Shin-ei Uni-Vibe. Its simple parameters offer standard phaser sounds as well as great modern extensions, making it versatile yet self-explanatory. Choose between typical classic phasing, more gentle Uni-Vibe feeling or the more subtle, less dominant (underestimated) phase 45 sound. "Modify" the classics with the feedback setting and, as special cherry on your cake, discover stereo phasing/vibrato as a nice alternative to chorus effects, avoiding the chorus/flanger inherent "fuzziness" of attack transients.

Screenshots

Stone Echo2 screens
PhaseX2 screens

Verdict

The call

The clearest difference is rating: PhaseX at 5.0 against Stone Echo's 2.8. PhaseX also leads on update cadence (every 2 weeks vs every 38 months). Stone Echo's advantage is price ($2.99 vs $5.99) and ratings volume (4 vs 1). 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

Stone Echo costs $2.99 and PhaseX $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

PhaseX holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

Stone Echo ships an update every 38 months, PhaseX every 2 weeks. Both last shipped on September 20, 2026.

Scorecard5 real differences · 5 level
Stone Echo versus PhaseX: the parameters behind the verdict, then further details
ParameterStone EchoPhaseX
Price$2.99 — better$5.99
Rating2.8 (4 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings4 — better1
Update frequencyEvery 38 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS10.0 — better17.6
Further details — not scored
Size9 MB7 MB
Age rating4+4+
DeveloperAleksandar Mlazevmattoncino software

Customer experience

Stone Echo

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

PhaseX

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stone Echo

No in-app purchases

None

PhaseX

No in-app purchases

Questions

Is Stone Echo free?
Stone Echo costs $2.99, with no in-app purchases.
Is PhaseX free?
PhaseX costs $5.99, with no in-app purchases.
Which has better reviews, Stone Echo or PhaseX?
PhaseX is rated higher. Stone Echo averages 2.8 out of 5 from 4 ratings, while PhaseX averages 5.0 from 1 ratings.
Do Stone Echo or PhaseX have ads?
Neither Stone Echo nor PhaseX shows ads.
Which is updated more often, Stone Echo or PhaseX?
Stone Echo ships an update every 38 months, and PhaseX every 2 weeks. Most recently, Stone Echo was updated on September 20, 2026 and PhaseX on September 20, 2026.

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