iFretless Brass vs Stone Echo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iFretless Brass
This app allows string instrument players to create expressive music using a variety of brass and synth sounds. It features detailed sample libraries and advanced touch sensitivity for natural performance. Supports MIDI and Audio Unit integration for external devices and recording apps.
- Expressive brass and synth sounds
- Detailed sample library
- Advanced touch pressure detection
- Natural vibrato and slides
- MIDI input/output support
- Audio Unit integration
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iFretless Brass enables guitar and string instrument players to play expressive music with a variety of instruments. It includes a detailed library of samples from real brass instruments as well as a collection of classic synth sounds. Each note is sampled at nine different volume levels in order to capture the full range of tones produced by the original instrument. Key features: 1) Supports MIDI input and output for interface with external devices such as digital pianos and electronic wind instruments as well as virtual MIDI compatible iOS apps. 2) A patented algorithm uses the accelerometer accurately detects touch pressure on the screen and respond with dynamic selection of samples of the appropriate timbre and volume. 3) Responds to fretless vibrato and between-note slides in a natural way, making it one of the most expressive performance interfaces available anywhere. 4) MPE MIDI support 5) Audio Unit support allows you to use the app as a virtual instrument inside of audio recording and mixing apps such as GarageBand Sound library includes: Euphonium Trombone Trumpet Trumpet 2 Flugelhorn Tuba French Horn Muted Trumpet and a collection of classic synth samples
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
Screenshots
Verdict
The clearest difference is rating: iFretless Brass at 4.9 against Stone Echo's 2.8. iFretless Brass also leads on update cadence (every 6 weeks vs every 38 months) and review sentiment (68% vs 50%). Stone Echo's advantage is price ($2.99 vs $9.99) and iOS requirement (10.0 vs 15.6). 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
iFretless Brass costs $9.99 and Stone Echo $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
iFretless Brass holds the better App Store score, 4.9 against 2.8. Both are backed by a comparable volume of ratings — 10 and 4 respectively. Written reviews point the same way: 68% of iFretless Brass's written reviews are positive against 50% of Stone Echo's.
iFretless Brass ships an update every 6 weeks, Stone Echo every 38 months. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.
| Parameter | iFretless Brass | Stone Echo |
|---|---|---|
| Price | $9.99 | $2.99 — better |
| Rating | 4.9 (10 ratings) — better | 2.8 (4 ratings) |
| Positive reviews | 68.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 10 — better | 4 |
| Update frequency | Every 6 weeks — better | Every 38 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 10.0 — better |
| Further details — not scored | ||
| Size | 241 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Blue Mangoo Consulting Company Limited | Aleksandar Mlazev |
Customer experience
iFretless Brass
Stone Echo
In-app purchases
iFretless Brass
No in-app purchases
Stone Echo
No in-app purchases









