Stone Echo vs TimeVerb
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Frequency changing echo effect
- Phase modulated frequency
- Standalone app and AUV3 plugin
- Adjustable time, feedback, and level
- UFO mode for experimental sounds
Read full descriptionHide 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
TimeVerb
This audio plugin combines a classic spring reverb emulation with a new digital reverb. It offers extensive control over both effects, allowing for parallel or series processing to create unique sonic textures and atmospheres.
- Spring reverb "Type 4" with feedback and stereo
- Digital reverb with pre-delay and room size
- Parallel and series effect processing
- Unlimited program storage
- 16 factory presets included
- AUv3 extension support
Read full descriptionHide full description
Please note: this is an AUv3 plugin that can be used with compatible host Apps. TimeVerb-X is a new plugin from GSi that combines GSi's “classic” Type4 spring reverb, first released in 2008, and a new algorithmic digital reverb. The “Type4” spring reverb emulation was originally inspired by an Accutronics reverb tank type 4, like those used in classic Hammond organs of the A100 series, also used in many famous electric guitar amplifiers. The digital reverb, instead, was first developed for the GSi Gemini sound module, but was also included in some Crumar hardware instruments. Both effects have been slightly expanded and further improved for the release of TimeVerb-X, as the spring reverb now features a self-oscillating feedback decay adjustment and a stereo width knob, and the digital reverb includes the early reflections section that was missing in the original project. Both reverbs put together make up a great sound when working in parallel, and create some interesting atmospheres when working in series. TimeVerb-X main features: - Spring reverb "Type 4" with feedback and stereo operation - Digital reverb with pre-delay, early reflections and room size adjustment - Built-in programmer with unlimited number of Programs (comes with 16 factory Programs) - Integrated user's manual - Comes with AUv3 extension
Screenshots
Verdict
The clearest difference is review sentiment: TimeVerb at 100% against Stone Echo's 50%. TimeVerb also leads on rating (5.0 vs 2.8) and update cadence (every 17 months vs every 38 months). Stone Echo's advantage is price ($2.99 vs $14.99). 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
Stone Echo costs $2.99 and TimeVerb $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
TimeVerb holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews point the same way: 50% of Stone Echo's written reviews are positive against 100% of TimeVerb's.
Stone Echo ships an update every 38 months, TimeVerb every 17 months. Both last shipped on November 11, 2026.
| Parameter | Stone Echo | TimeVerb |
|---|---|---|
| Price | $2.99 — better | $14.99 |
| Rating | 2.8 (4 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 | 4 |
| Update frequency | Every 38 months | Every 17 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 9 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleksandar Mlazev | Genuine Soundware |
Customer experience
Stone Echo
TimeVerb
In-app purchases
Stone Echo
No in-app purchases
TimeVerb
No in-app purchases









