# FAC Maxima — FAC Fred Anton Corvest > Automatic gain control and level maximization for audio processing. (iPhone/iPad app by Frederic Corvest.) - Source: https://appshunter.io/ios/app/fac-maxima/id1323117302 (this page in markdown: same URL + `.md`) - Developer: [Frederic Corvest](https://appshunter.io/developer/1230164765) - Category: Music - Price: $9.99 - Rating: 4.90/5 from 67 App Store ratings · 32 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 19 MB - Languages: American English - Released: 2017-12-21 - Data updated: 2026-08-15 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/fac-maxima/id1323117302/reviews.md ## What is FAC Maxima? FAC Maxima is an audio effect designed to provide automatic gain control of your audio materials to ensure that the levels stay consistent and never exceed 0dB. It's a clever combination of dynamic processors that can be set to provide a gentle transparent signal boost respecting the initial dynamic or significant colorised level maximisation. Thanks to a unique signal path, algorithms and a small set of parameters, FAC Maxima makes a complicated task easy. In addition to the classic final stage application, FAC Maxima excels on individual tracks too. With a few changes it's easy to go from the common gain deviation compensation, e.g. for vocals, to drastical audio changes that will bring your audio material to new territories: boost reverb tails, flattenize drums… The applications are various and the possibilities are limitless. • Get the final touch! FAC Maxima definitely makes audio louder and that makes it an effective tool in many mastering engineers’ arsenals. • Be creative! Emphasis subtitle details, sometimes floor contains treasure, you will have a completely new listen to your old tracks! The audio background may indeed contain noise, but sometimes also "pearls" that may be revealed. • Go further! Tired by the advertisement boost, or important speech level variation in broadcasting? Use FAC Maxima to maintain the level constant. DJ's may also benefit from the effects to normalise in real time the level of the mixed tracks. As with all FAC products the interface has a unique sober look and provides a great user experience. FAC Maxima also brings a real-time multi-waveform graph having a 6s buffer of the audio material before and after operations, this will help on setting the right parameters and have a visual feedback. ## Key features - Automatic gain control - Level maximization - Transparent signal boost - Creative colorization - Mastering tool - Individual track processing - Real-time multi-waveform graph ## Recent user reviews (10 of 32) All indexed reviews: https://appshunter.io/ios/app/fac-maxima/id1323117302/reviews.md ### 1/5 — I can't get it to work *2025-10-02* I would give this app a higher rating if I could figure out how to use it. I bought this app to use as a plugin for LumaFusion. I have tried to use it like I use any of the builtin audio plugins. I get no audio and adjusting any of the controls does nothing. If I disable this plugin I hear my audio. This might be a newbie issue but if I can't get it to work I can't rate it 5 stars. I really would love to give it 5 stars because I need this type of plugin. Any advice, help. I am running app/plugin in LumaFusion 5.2 on my M2 iPad Pro running iPadOS26. ### 3/5 — Too much latency *2025-07-06* Generally this plugin works nicely and levels the audio signal. Unfortunately it adds too much latency, so I cannot use it for live playing. ### 5/5 — Simply marvelous *2024-08-30* This app does a great job. Don’t go to far with it but find your sweet spot and it’s a go. Great work ### 5/5 — I LOVE THIS APP *2024-02-08* This is the best of all apps I run with Logic Pro ### 5/5 — Read below, I know you’re busy *2023-08-12* Fred, is the one of the most respected. Developer amongst the iOS community! If anyone is having trouble using his apps, I’m so sorry to be truthful and blatant, get the wisdom for sound design and audio production first, then go for these unparalleled app’s developed by this mighty developer! ### 2/5 — Does not self-load as GarageBand song editor starts. *2022-08-31* As title. Generally Fred’s apps are really good. But, in Late August, 2022, Maxima unloaded, and then despite me swiping away GarageBand and then restarting it, there seemed to be a ‘memory’ in Maxima, that it wasn’t loading. Never had that before with an Audio Unit. In other words, having found which audio unit it was that unloaded, after GB’s dialogue box appeared (unload/disable?), I virtual-powered-off and back on Maxima, and in that session of GB in the song editor, it appeared to recommence working, BUT… I copied the - now working - song as part of my workflow, then load it up in GB song editor, and although no notification appeared, FAC Maxima was not loaded. It’s unfortunately silently happening thereafter. Only happened since iOS/iPadOS 15.6 or the latest one with important security fixes, but I cannot say definitively this is the cause, it’s the only thing I personally changed about my ipad is all. iPad Pro 12.9” M1 is the one I have, 1.4Gb free SSD. I cannot use Maxima until it’s fixed. Comprehensively looked into contacting the developer. I am not on Twitter. The upshot is, I would have to remember to switch off Maxima and switch it back on every time I load a song in GB editor, with it in a track that’s in use. And, this cannot be done while the track is running, because that does not do the ‘fix’. I didn’t notice until after the Mastering process for me, where the drums seemed dead, and I traced it back to the effect not loading at startup. It’s just easier to use something else, or a different method to spruce up the drums, until Maxima is fixed. Take care all. ### 5/5 — It’s a beautiful thing. *2022-03-19* Everything from transparent and polished to bold and aggressive. This Dev is incredible. ### 5/5 — Best app ever *2022-01-25* Fantastic quality! ### 4/5 — Great sound but interface needs work *2020-12-02* The overall sound and presets are great. The presentation needs a little work. The metering could be more visible - its too tiny. Would be nIce if i could double-tap and just see the meters. Some knobs values only work in increments and you can’t enter any specific value you want to. I would highly recommend this app though, dont get me wrong. ### 3/5 — Great design; but save state issues? *2020-09-23* All of the positive reviews and word of mouth are true, this plugin does sound great, look great and offer a low cpu cost answer to metering + limiting - good luck running multiple FabFilter L2’s otherwise - however, my primary use is just that, multiple tracks needing a shiny and transparent gain control - for some reason as of my writing this, I lose my settings as they were set, seemingly randomly(?) but definitely after reloading a project (Cubasis 3) - not something I’m seeing with my other plugins so hoping it’s a bug that can be fixed on this end and not some weird unidentifiable quirk in iOS14 or Cubasis. **Developer response:** Thank you for your feedback, the state saving issue has been fixed by Apple in version 14.2. May I suggest you to update your system and update your rating. All the best, Fred ## Frequently asked questions about FAC Maxima ### What does FAC Maxima do? FAC Maxima is an audio effect that automatically controls gain to ensure audio levels remain consistent and do not exceed 0dB. It combines dynamic processors to offer both transparent signal boosting and significant, colorized level maximization. ### What are the key features of FAC Maxima? Key features include automatic gain control, level maximization with creative colorization, transparent signal boosting, versatile application on individual tracks or for mastering, and a real-time multi-waveform graph for visual feedback. ### How much does FAC Maxima cost? Based on the provided information, FAC Maxima is a paid application. There are no mentions of in-app purchases or subscription models, indicating a one-time purchase. ### What are some common use cases for FAC Maxima? Common use cases include mastering audio to make it louder, creative audio manipulation to reveal hidden details in tracks, compensating for gain deviation in broadcasting, and normalizing audio levels in real-time for DJs. ### Is FAC Maxima compatible with different audio materials? Yes, FAC Maxima is designed to work with various audio materials. It can be used for final stage mastering, on individual tracks for specific effects like boosting reverb tails or flattening drums, and in broadcasting to maintain constant speech levels. ## Version history (last 5 releases) ### 1.6 — 2020-04-26 • 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 ### 1.5 — 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 Maxima, 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. ### 1.4.2 — 2018-12-22 • Consolidate view configuration management (Center View Position) • Bug Fixes and stability improvement ### 1.4 — 2018-10-23 • Addition of a Stereo Link Knob (From Dual Mono to Full Stereo) • Addition of a new detector SUB (Sub bass) • Update SLOW detector presets to SUB • Bug Fixes, Stability and Performance Improvement! ### 1.3 — 2018-04-30 • New waveform viewer: optional scales, mirroring, threshold line feedback, VU Meter Peak/Rms and general widget optimisation. • Automatic setting of the startup view (small vs large). Can be changed if the host supports the view configuration management. ## Apps similar to FAC Maxima | App | Rating | Price | Category | | --- | --- | --- | --- | | [Radio 105 Indie](https://appshunter.io/ios/app/radio-105-indie/id1559928660) | — | Free | Music | | [Real Piano - Electric Keyboard](https://appshunter.io/ios/app/real-piano-electric-keyboard/id6446647820) | 1.0 (1) | Free | Music | | [OUT & PROUD LIVE](https://appshunter.io/ios/app/out-and-proud-live/id1562328760) | 5.0 (8) | Free | Music | | [Silo - Granulator and Reverb](https://appshunter.io/ios/app/silo-granulator-and-reverb/id6444164740) | 4.8 (32) | $9.99 | Music | | [Been Getting Fetty Radio](https://appshunter.io/ios/app/been-getting-fetty-radio/id6450182020) | 5.0 (4) | Free | Music | | [MusicPutty - Vocal Tune](https://appshunter.io/ios/app/musicputty-vocal-tune/id6444390100) | 4.4 (125) | Free | Music | ## More apps by Frederic Corvest - [FAC Chorus](https://appshunter.io/ios/app/fac-chorus/id1230164766) - [FAC Transient](https://appshunter.io/ios/app/fac-transient/id1354088081) - [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 --- *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 2026-08-15.*