# FAC Transient — FAC Fred Anton Corvest

> Dynamics processor for precise control of instrument attack and sustain stages. (iPhone/iPad app by Frederic Corvest.)

- Source: https://appshunter.io/ios/app/fac-transient/id1354088081 (this page in markdown: same URL + `.md`)
- Developer: [Frederic Corvest](https://appshunter.io/developer/1230164765)
- Category: Music
- Price: $9.99
- Rating: 4.80/5 from 71 App Store ratings · 23 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 19 MB
- Languages: American English
- Released: 2018-03-08
- Data updated: 2026-08-21
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/fac-transient/id1354088081/reviews.md

## What is FAC Transient?

FAC Transient as is suggested by the name is an outstanding dynamics processor providing precise design and control of the attack and sustain stages of your instruments. Transient designers or shapers are often associated with drum enhancements and only the best of them are versatile enough to suit most of the scenarios. Of course, you know that FAC takes pride in ensuring versatility in its product line, providing subtle to drastic changes. FAC Transient is no exception to the rule!

To meet this objective and to be ready for all the situations: drums, guitars, bass, vocal and much more. FAC Transient includes, in addition to the classic amplification or attenuation of the attack and sustain portion of your instrument, a fine control of the detection circuit involved in the processing.

Without going into technical details, there are three envelopes built from their respective detection circuits. The first one is the contour of the input signal, this includes similar processing available in Maxima and brings you control of the treshold, time and detector algorithm. The second and third one define the contour of the attack and sustain portions and brings you a total control of the depth and duration of each stage.

FAC Transient gives you all you need to design the shape of your instruments and provides them the place they deserve in your mix.

## Key features

- Precise attack and sustain control
- Versatile instrument shaping
- Subtle to drastic sonic changes
- Fine control of detection circuit
- Three envelope controls
- Adjustable depth and duration

## Chart rankings

- #188 in Top Paid · Music (US App Store)

## Recent user reviews (10 of 23)

All indexed reviews: https://appshunter.io/ios/app/fac-transient/id1354088081/reviews.md

### 1/5 — Needs Updated

*2026-05-08*

The plugin mutes audio in Cubasis 3 after you close the app and reopen it. There’s no way around enabling it other than removing the effect and then enabling it again

### 5/5 — Drum icing is what I call it

*2024-08-30*

Use the app on drums and you will be in love. I’m in love. Thanks for the good work!

### 5/5 — Stellar Transient Shaper

*2023-05-28*

This is my first purchase of an iOS app from Frederic Corvest. It is a fabulous transient designer. Extremely robust, intuitive, and musical, and useful on nearly any sound, not just percussion. 
This might be the best transient designer I’ve ever used, including my desktop apps.
Bravo, Frederic

### 5/5 — This app is very exquisite

*2021-03-01*

I’m learning it

### 5/5 — Absolutely amazing

*2020-06-11*

I use this app on almost every track I make to add punch and depth to my drums. Absolutely excellent

### 5/5 — Perfect!

*2020-03-29*

For my Drumtracks this is just perfect! I love your apps, keep on the good work!

### 1/5 — BeatMaker 3?

*2020-01-01*

Not working on BeatMaker 3. Any solutions?

**Developer response:** Hi, could you please contact me via the social media. Fac Transient is working in BM3, and part of a lot of producer BM3 projects. All the best, Fred

### 3/5 — Can I get a refund?

*2019-12-16*

I thought this would work for external audio and it does not, it is only an internal plugin and I have no software to use with it.  Can I get a refund?

### 5/5 — Great app

*2019-12-03*

Enjoyable

### 5/5 — Top of the top

*2019-10-15*

Best on iOS love his stuff

## Frequently asked questions about FAC Transient

### What does FAC Transient do?

FAC Transient is a dynamics processor designed to give you precise control over the attack and sustain stages of your instruments. It allows you to shape the initial impact and the lingering decay of your sounds, offering subtle enhancements or drastic transformations.

### What instruments can I use FAC Transient on?

This app is highly versatile and can be used on a wide range of instruments including drums, guitars, bass, vocals, and much more. Its design aims to provide precise control for almost any audio scenario.

### How does FAC Transient control the sound?

It offers fine control over the detection circuit and includes three envelopes. You can adjust the threshold, time, and detector algorithm for the input signal, and control the depth and duration of both the attack and sustain stages.

### Is FAC Transient free to use?

Based on the provided information, FAC Transient is a paid application. It does not have in-app purchases or ads, indicating a one-time purchase model.

### What makes FAC Transient different from other transient shapers?

FAC Transient distinguishes itself with its precise design and control over both attack and sustain stages, going beyond typical drum enhancement. It offers a fine control of the detection circuit and three distinct envelopes for detailed sound sculpting.

## Version history (last 5 releases)

### 1.3 — 2020-04-17

• NEW: Brand new UI design!
• NEW: Support of user presets saved from hosts
• NEW: Import/export of presets from/to "Files" (from the host App)
• Update of the support dialog in the host app
• Fix missing USB input interfaces in host app

### 1.2 — 2019-06-05

• NEW FEATURE: Addition of different views for portrait and landscape mode (iPhone/iPad)
• NEW FEATURE: Dynamic resizing according to the size provided by the host

Hey, I'm Fred developer of FAC. We share the same passion: MUSIC. A wonderful universal language and an amazing source of happiness.

FAC is a one person business, and as you may guess designing such apps is a very long process. Want to support? Please rate and review FAC Transient, and check out my other apps. You are my motivation, and as I’ve already tweeted, your support provides me an instant coding nitro boost. So the more you give the more you receive.

### 1.1.2 — 2018-12-22

• Consolidate view configuration management (Center View Position)
• Bug Fixes and stability improvement

### 1.1 — 2018-10-03

• Addition of a Soft Clipper
• Larger View
• Addition of Presets (Trap Beat, Ambience & Saturator)
• Update Existing Presets (Soft Clipper)
• Update Attack Time Knob Range
• Bug Fixes, Stability and Performance Improvement!

### 1.0.2 — 2018-03-14

- Fix compatibility issue with previous versions

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## More apps by Frederic Corvest

- [FAC Chorus](https://appshunter.io/ios/app/fac-chorus/id1230164766)
- [FAC Maxima](https://appshunter.io/ios/app/fac-maxima/id1323117302)
- [FAC Envolver](https://appshunter.io/ios/app/fac-envolver/id1378195291)
- [FAC Bandit](https://appshunter.io/ios/app/fac-bandit/id1458633968)
- [FAC Alteza](https://appshunter.io/ios/app/fac-alteza/id1489369665)

All apps by Frederic Corvest: https://appshunter.io/developer/1230164765

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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 2026-08-21.*