Stone Echo vs Trem
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
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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
Trem
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Trem-N-Verb is a stereo tremolo and reverb effect plugin for iOS. Combine classic rhythmic modulation with deep, lush reverberation to add movement and space to any sound. Whether you need a subtle shimmer or a dramatic pulsating swell, Trem-N-Verb gives you expressive control in a clean, intuitive interface. Features - Stereo tremolo with tempo-sync LFO (note values from 1/64 to 2 bars) - Rich stereo reverb with adjustable reverb time - Independent Reverb and Tremolo on/off switches - Two ready-to-play presets - Dry/Wet mix control - AUv3 compatible — works seamlessly in Logic Pro and GarageBand
Screenshots
Verdict
The clearest difference is price: Trem at $0.99 against Stone Echo's $2.99. Stone Echo's advantage is iOS requirement (10.0 vs 12.0). On ads, in-app purchases 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
Stone Echo costs $2.99 and Trem $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Stone Echo | Trem |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 2.8 (4 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 38 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 10.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 9 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Aleksandar Mlazev | Kenichi Nakamura |
In-app purchases
Stone Echo
No in-app purchases
Trem
No in-app purchases








