# TfxEcho vs sumFX

The clearest difference is review sentiment: TfxEcho at 80% against sumFX's 55%. TfxEcho also leads on price ($4.99 vs $9.99) and rating (4.7 vs 4.4). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

TfxEcho costs $4.99 and sumFX $9.99 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 4.4. Both are backed by a comparable volume of ratings — 12 and 12 respectively. Written reviews point the same way: 80% of TfxEcho's written reviews are positive against 55% of sumFX's.

TfxEcho ships an update every 3 months, sumFX every 6 months. The most recent releases landed on September 20, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | TfxEcho | sumFX |
| --- | --- | --- |
| Price | **$4.99** | $9.99 |
| Rating | **[4.7 (12 ratings)](https://appshunter.io/ios/app/tfxecho/id1523777426/reviews)** | [4.4 (12 ratings)](https://appshunter.io/ios/app/sumfx/id6450494474/reviews) |
| Number of ratings | 12 | 12 |
| Positive reviews | **80.0% of reviews** | 54.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Paid | Paid |
| Best chart rank | **#185** | — |
| Size | 1 MB | 44 MB |
| Requires iOS | 13.5 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryo Togawa](https://appshunter.io/developer/1474193056) | [OSC Audio](https://appshunter.io/developer/1693533681) |

## 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


### sumFX

[App page](https://appshunter.io/ios/app/sumfx/id6450494474)

This app is a versatile audio effects processor for musicians. It offers a modular design with multiple high-quality FX modules and customizable slots, allowing for quick creation of unique sounds. Focus on your music with intuitive controls and visual feedback.

**Highlights:** Modular multi-FX processor, 8 high-quality FX modules, 8 FX slots with Wet/Dry control, 2 LFOs per slot, 50+ cross-platform presets, Pre/post waveform view

**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 sumFX free?

sumFX costs $9.99, with no in-app purchases.

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

TfxEcho is rated higher. TfxEcho averages 4.7 out of 5 from 12 ratings, while sumFX averages 4.4 from 12 ratings.

### Do TfxEcho or sumFX have ads?

Neither TfxEcho nor sumFX shows ads.

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

TfxEcho ships an update every 3 months, and sumFX every 6 months. Most recently, TfxEcho was updated on September 20, 2026 and sumFX on September 7, 2026.

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