# TfxEcho vs isxynth

The clearest difference is rating: TfxEcho at 4.7 against isxynth's 3.7. TfxEcho also leads on update cadence (every 3 months vs every 34 months) and price ($4.99 vs $7.99). isxynth's advantage is review sentiment (100% vs 80%) and iOS requirement (11.0 vs 13.5). On ads, in-app purchases, monetization model and device support there is nothing between them.

TfxEcho costs $4.99 and isxynth $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TfxEcho holds the better App Store score, 4.7 against 3.7. Both are backed by a comparable volume of ratings — 12 and 3 respectively. Written reviews complicate that: 80% of TfxEcho's written reviews are positive against 100% of isxynth's, so the app with the better star average is not the one people write more warmly about.

TfxEcho ships an update every 3 months, isxynth every 34 months. The most recent releases landed on September 20, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | TfxEcho | isxynth |
| --- | --- | --- |
| Price | **$4.99** | $7.99 |
| Rating | **[4.7 (12 ratings)](https://appshunter.io/ios/app/tfxecho/id1523777426/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/isxynth/id6450951503/reviews) |
| Number of ratings | **12** | 3 |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 34 months |
| Monetization | Paid | Paid |
| Best chart rank | **#185** | — |
| Size | 1 MB | 8 MB |
| Requires iOS | 13.5 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryo Togawa](https://appshunter.io/developer/1474193056) | [Alexey Nadzharov](https://appshunter.io/developer/729549192) |

## What reviewers say

### TfxEcho

[App page](https://appshunter.io/ios/app/tfxecho/id1523777426)

**Currently charting:** #185 Top Paid · Music (US App Store)

This audio plugin offers a warm, dark echo effect inspired by analog delay units. It allows for adjustable delay times, feedback, and filters, with modulation capabilities and tempo syncing. The plugin captures high-frequency signals for a versatile sound.

**Highlights:** Echo and delay effect, BBD-inspired delay lines, Adjustable delay time (20-1200 ms), Feedback control (0-100%), Low-pass and high-pass filters, Modulation rate and width, Tempo sync

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### isxynth

[App page](https://appshunter.io/ios/app/isxynth/id6450951503)

This music effect plugin allows spectral cross synthesis and morphing between two input signals. It separates noise and tone components, offering controls for blending, freezing, and time-based delays. Gestures on controls can be recorded and played back for dynamic sound shaping.

**Highlights:** Spectral cross synthesis, Morphing between two input signals, Noise and tone component blending, Freeze control for spectral blurring, 3-second delay lines per input, Gesture recording and playback

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TfxEcho free?

TfxEcho costs $4.99, with no in-app purchases.

### Is isxynth free?

isxynth costs $7.99, with no in-app purchases.

### Which has better reviews, TfxEcho or isxynth?

TfxEcho is rated higher. TfxEcho averages 4.7 out of 5 from 12 ratings, while isxynth averages 3.7 from 3 ratings.

### Do TfxEcho or isxynth have ads?

Neither TfxEcho nor isxynth shows ads.

### Which is updated more often, TfxEcho or isxynth?

TfxEcho ships an update every 3 months, and isxynth every 34 months. Most recently, TfxEcho was updated on September 20, 2026 and isxynth on September 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*