Comparison

Stone Echo vs HearSonic

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

HearSonic

Transform your listening experience with this audio processor. It enhances live audio for outdoor headphone use, offering spectral feedback and tonal shifts. Save custom soundscapes and record past moments with history recording.

Highlights
  • Band-selective spectral feedback
  • Sound Field sphere shaping
  • History Recording
  • On-device motion sensor integration
  • MIDI In for parameter control
  • AUv3 plugin support
Features
Read full description

HearSonic is a reactive granular processor with band-selective spectral feedback for live audio, built primarily for outdoor headphone listening. It also works as an AUv3 effect on instruments and recordings in a host. It combines several processing chains to produce rich overlays and warm or dark tonal shifts in received audio which transforms user's listening environment. - shape the sound with Sound Field sphere, Dark & Bright amounts, and many parameters - parameters sets can be saved in a session - standalone works with default microphone input only (you need headphones, otherwise the processing will not start) - has 'History Recording' with configurable length which runs continuously and allows capturing past moments - On device motion sensors can be used for sound field movement - MIDI In for chosen parameter - works as AU plugin in audio hosts with adjusted input signal processing

Screenshots

Stone Echo2 screens
HearSonic4 screens

Verdict

The call

The clearest difference is rating: HearSonic at 5.0 against Stone Echo's 2.8. HearSonic also leads on update cadence (every 3 days vs every 38 months). Stone Echo's advantage is price ($2.99 vs $7.99) and iOS requirement (10.0 vs 15.0). 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 HearSonic $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

HearSonic holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

UpkeepUpdate frequency

Stone Echo ships an update every 38 months, HearSonic every 3 days. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.

Scorecard4 real differences · 6 level
Stone Echo versus HearSonic: the parameters behind the verdict, then further details
ParameterStone EchoHearSonic
Price$2.99 — better$7.99
Rating2.8 (4 ratings)5.0 (2 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings4 — better2
Update frequencyEvery 38 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS10.0 — better15.0
Further details — not scored
Size9 MB15 MB
Age rating4+4+
DeveloperAleksandar Mlazevr6 appz

Customer experience

Stone Echo

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

HearSonic

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stone Echo

No in-app purchases

None

HearSonic

No in-app purchases

Questions

Is Stone Echo free?
Stone Echo costs $2.99, with no in-app purchases.
Is HearSonic free?
HearSonic costs $7.99, with no in-app purchases.
Which has better reviews, Stone Echo or HearSonic?
HearSonic is rated higher. Stone Echo averages 2.8 out of 5 from 4 ratings, while HearSonic averages 5.0 from 2 ratings.
Do Stone Echo or HearSonic have ads?
Neither Stone Echo nor HearSonic shows ads.
Which is updated more often, Stone Echo or HearSonic?
Stone Echo ships an update every 38 months, and HearSonic every 3 days. Most recently, Stone Echo was updated on November 11, 2026 and HearSonic on November 10, 2026.

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