# TfxMod — TimeFX Chorus / Flanger

> AudioUnit Extension plugin for chorus and flanger effects, inspired by BBD devices. (iPhone/iPad app by Ryo Togawa.)

- Source: https://appshunter.io/ios/app/tfxmod/id1524639578 (this page in markdown: same URL + `.md`)
- Developer: [Ryo Togawa](https://appshunter.io/developer/1474193056)
- Category: Music
- Price: $4.99
- Rating: 4.80/5 from 6 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.6 · 1 MB
- Languages: American English
- Released: 2020-07-25
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/tfxmod/id1524639578/reviews.md

## What is TfxMod?

TfxMod is a chorus / flanger effect AudioUnit Extension plugin. It uses delay lines which are inspired by BBD (bucket brigade device). The delay line is identical to the delay line of the TfxEcho except its buffer length. The delay line uses fixed length buffer and an artificial clock to sample input signal in variable sampling rate. When the delay time is changed, the delay line can produce pitch change effect which is similar to the behavior of the BBD based chorus / flanger unit.

Features

AudioUnit Extension

Chorus Effect
- Delay Time: From 1 ms to 40 ms
- Feedback: 0%
- Modulation width: From 0 ms to +/- 1 ms

Flanger Effect
- Modulation Mode: mode1, mode2, and mode3
- Delay Time: From 1 ms to 20 ms (mode1&2), From 1 ms to 13 ms (mode3)
- Feedback: From 0 % to 100 %
- Modulation width: From 0 ms to 39 ms (mode1), From 0 ms to 19 ms (mode2), From 0 ms to 12 ms (mode3)

Common
- Adjustable lowpass filter and high-pass filter.
- Modulation rate: From 0.01 Hz to 10 Hz
- LFO Frequency can be synced to the tempo provided by the host application.
- LFO Waveform: Continuously variable from sine wave to triangle wave.
- Stereo Width: LFO Phase offset from 0 degree to 180 degree.

Host Application
- Host application uses system audio input as an audio source and processed audio signal is routed to the system audio output.

## Key features

- Chorus and flanger effects
- BBD-inspired delay lines
- Adjustable delay time, feedback, and modulation
- Variable LFO rate and waveform
- Low-pass and high-pass filters
- Stereo width control

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/tfxmod/id1524639578/reviews.md

### 4/5 — Nailed Electric Mistress

*2022-03-18*

I am loving this app so far…I was trying to find an Electric Mistress type of sound and this app nailed it with a little tweaking. It also has the ability to do most other flange type sounds well with Flange 1-3. The only thing I would like to see if the ability to save presets. I don’t see a way to save them and I bumped one of the factory presets in Camelot Pro and erased all my work.

### 5/5 — Another great app from this dev

*2020-07-26*

Sounds great!

## Frequently asked questions about TfxMod

### What is TfxMod?

TfxMod is an AudioUnit Extension plugin that provides chorus and flanger audio effects. It is designed to emulate the sound of vintage bucket brigade devices (BBD) and can be used with compatible host applications on iOS.

### What devices does TfxMod support?

TfxMod is supported on iPhone, iPad, and iPod touch devices. It requires iOS 11.0 or later.

### How much does TfxMod cost?

TfxMod is a paid application, priced at $1.99. There are no in-app purchases or subscriptions required.

### What are the key features of TfxMod?

TfxMod offers adjustable delay times, feedback, modulation width, and LFO rates. It also includes adjustable low-pass and high-pass filters, and continuously variable LFO waveforms from sine to triangle.

### Can TfxMod be used offline?

As an AudioUnit Extension plugin, TfxMod requires a host application to function. Its offline usability depends on the host application's capabilities. The plugin itself does not require an internet connection to operate once installed.

### How often is TfxMod updated?

The latest version of TfxMod is 1.9, last updated on January 15, 2026. While specific update frequency isn't detailed, this indicates ongoing development.

### What is the age rating for TfxMod?

TfxMod has an age rating of 4+, making it suitable for users of all ages. This indicates no mature content is present in the application.

### Does TfxMod have ads?

No, TfxMod does not contain advertisements. As a paid application, it offers an ad-free experience for users.

## Version history (last 5 releases)

### 1.9 — 2026-01-15

Version 1.9 contains improvements and bug fixes.
- Support iOS 26 and iPadOS 26.

### 1.8 — 2023-09-18

Version 1.8 contains improvements and bug fixes.
- Support iOS 17 / iPadOS 17.

### 1.7 — 2023-06-08

Version 1.7 contains improvements and bug fixes.
- Fix a problem that AudioUnit Extension doesn't load in host application.

### 1.6 — 2022-09-09

Version 1.6 contains improvements and bug fixes.
- Support iOS 16 / iPadOS 16.

### 1.5 — 2021-09-17

Version 1.5 contains improvements and bug fixes.
- Support iOS 15 / iPadOS 15.

## Apps similar to TfxMod

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Mantis - BBD Echo](https://appshunter.io/ios/app/mantis-bbd-echo/id1673531514) | 5.0 (8) | $14.99 | Music |
| [Spatializer](https://appshunter.io/ios/app/spatializer/id1574889552) | 4.8 (27) | $6.99 | Music |
| [sumFX](https://appshunter.io/ios/app/sumfx/id6450494474) | 4.4 (12) | $9.99 | Music |
| [Phosphor 3](https://appshunter.io/ios/app/phosphor-3/id1499115553) | 4.7 (9) | $5.99 | Music |
| [Surreal Machines Crack](https://appshunter.io/ios/app/surreal-machines-crack/id6615060994) | 5.0 (3) | Free | Music |
| [resonatedo](https://appshunter.io/ios/app/resonatedo/id6444891127) | 5.0 (8) | $3.99 | Music |

## More apps by Ryo Togawa

- [VADrumSM](https://appshunter.io/ios/app/vadrumsm/id1474193057)
- [ChannelEqualizer](https://appshunter.io/ios/app/channelequalizer/id1513527511)
- [ChStrip](https://appshunter.io/ios/app/chstrip/id1518510831)
- [TfxEcho](https://appshunter.io/ios/app/tfxecho/id1523777426)
- [TfxReverb](https://appshunter.io/ios/app/tfxreverb/id1529840178)

All apps by Ryo Togawa: https://appshunter.io/developer/1474193056

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*