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Afterglow - Audio Finalizer by LEWIS GARETH K LE VAL (Released)
https://apps.apple.com/app/id6762629714
Your music deserves a proper ending. Not a rough export left to chance, not a generic limiter slapped across the master bus and hoped for the best, but a real finishing process that treats your music with the care it took to make it. Afterglow is a complete mastering processor built exclusively for ambient music, and everything about it, from the signal chain to the controls to the way it thinks about loudness, has been designed around what ambient music actually needs.
Drone, dark ambient, field recordings, sleep music, cinematic textures, generative soundscapes: whatever corner of the ambient world you work in, Afterglow speaks your language.
Auto: Your Instant Starting Point
Load your finished track into Afterglow, press Auto, and watch it work. Auto analyses your audio in full, reading its loudness, spectral character, low-end weight, high-frequency energy, and peak levels, then sets a complete starting configuration across every module. In seconds, you have a considered, intelligent first pass across the entire chain, ready for you to refine. It is the kind of head start that used to require either years of experience or a lot of expensive time in someone else's studio.
A Five-Stage Chain Built for Atmosphere:
Bloom opens the chain with tonal shaping: a tilt EQ that shifts the entire spectral balance warmer or brighter in a single move, a sub shelf for adding foundation to deep drones or taming an unruly low end, an air shelf that brings shimmer and life to reverb tails and soft pads, and a rumble filter that quietly removes the subsonic frequencies your ears cannot hear but your limiter absolutely can. A real-time spectrum analyser shows you the full picture as you work.
Glow adds harmonic warmth through gentle saturation, coaxing the kind of analogue richness out of a digital recording that makes it feel like something was always there rather than something that was added. The right amount of Glow is the amount you cannot quite identify, only appreciate.
Glue brings the track together. As a bus compressor voiced specifically for slow-moving, dynamic material, it adds cohesion and weight without flattening the life out of your music. Parallel compression blending lets you dial in as much presence as you want while keeping the natural rise and fall of your dynamics completely intact.
Space transforms the stereo field using mid/side processing, widening the image, shifting the balance between the centre and the sides, or softening the outer edges with diffusion so that reverbs and textures feel less like a stereo recording and more like a surrounding environment. This is where ambient music becomes immersive.
Lift closes the chain with a true-peak look-ahead limiter that brings your master to its final level cleanly and safely. Set your ceiling, bring up the gain, and let Lift protect the output without leaving a fingerprint on the music. Ambient masters tend to breathe more freely at a moderate level, and Lift is designed with that in mind.
A Complete Ambient Mastering Workflow in Your Hands
As a standalone app, Afterglow is a full "finalizing" environment. Import your audio, run Auto, shape the result with the five modules, and export directly to WAV, AIFF, FLAC, ALAC, or AAC at up to 32-bit float quality, all processed offline at full resolution. As an AUv3 plugin, it drops straight into any compatible host or DAW on your master bus.
Your music spent hours, weeks, or months being built into something worth hearing. Afterglow is how it gets finished.
Important Information:
Afterglow works on iPhone, but was built for iPad. Please consider this before purchase.
The "Auto" feature is only present in the standalone version of the app, not the AUv3 extension. This is because the analyser needs to read the full audio file from start to finish for best results.
Afterglow is not a replacement for professional mastering, but a tool for adding a final polish to your ambient tracks.
Details:
Universal: Yes
Minimum OS version: 17.0
Comments
So is this like what you can master in Logic Pro for IPad or Isotope mastering apps in regards analysis of your mixes?
I wondered about this also, I like the mastering assistant in Logic for it simple mix elevation (for a simple man etc). I would love to hear from users here (or the proud owner etc) in which ways does this significantly differ? It's not a matter of saving the money, I would happily buy it, but only with a differential purpose etc.
Hi there! Thank you for your interest 🙂
It does overlap a bit with Logic’s mastering assistant or iZotope in that it analyses your track and gives you a starting point, but the intention is quite different. Those tools are generally aiming for a more “standard” master, with loudness, punch, tonal balance, and translation across systems. That works really well for most genres, but it’s often the opposite of what ambient needs.
Mastering ambient is a pretty different process. You’re not trying to push level or make things hit harder, you’re trying to preserve depth, movement, and space. If you lean too much on loudness or heavy compression, it can flatten the track and reduce that sense of immersion.
Afterglow is built around this idea. The Auto feature isn’t trying to push your mix toward a fixed target, it’s more about understanding what’s already there and building a chain that keeps the dynamics and low-level detail intact. So it’s less about competing with those tools and more about doing a slightly different job, specifically for ambient and textural work.
When using Logic’s mastering assistant, it’s easy to overdo things, especially with ambient. The processing is designed to cover a wide range of genres, so the range goes from very subtle to quite strong. With ambient, that can make it feel like nothing is happening at first, so it’s natural to keep pushing until you clearly hear the effect, which is often where things begin to lose depth.
Afterglow is designed a bit differently. The tools and effects are deliberately tuned for ambient, so their ranges, curves, and behaviour stay within what tends to work for that style. Even when you push things, it remains more about shaping and supporting the track rather than transforming it, which makes it much harder to accidentally flatten or over-process the piece.
Hmmmmm. Fascinating.
Hmmmmm. Fascinating.
I like it - ran the auto mode over a few bits last night and it sounded great.
sounds like a handy tool.
how is it as realtime fx for a live act for example!?
how is it on cpu !?
thnx
Excellent response, and thank you. Have bought and look forward to having an (ambient) fiddle. Keep up the work!
Curious btw why this is listed under the Entertainment section of the AppStore rather than the Music section! @lewisleval
Fantastic stuff. While I have a personal attachment to my original mixes, this does objectively make them better.
Yes, this is handy, I like it.
How does this compare with or/ does it play well with Klevgrand grand finale 2?
I think it might be weird/unnecessary to combine them. There are a few things that are different - if you look at the ui of both for a minute or two, you'll easily observe this yourself tbh. There are probably other more technical differences too about how the compressor etc is set up.
The handy thing about Afterglow is that it can analyze the input audio to auto generate its settings. Grand Finale doesn't do that. If that's something you think is important or useful for your work/playflow, you might like to have Afterglow even if you have Grand Finale 2.
Thanks @Gavinski … I knew you’d know a good straight answer!
I like the sound of it in theory , will probably grab it…
Thought I'd give Afterglow a go as I'm on iPhone only and can't use Logic's Mastering Assistant.
)
Don't really do ambient, so have been experimenting a little on other non-ambient music. (Am I the only one?
And, I'm happy (and at the same time sad) to say that the Afterglow 'Auto' feature does a better job at mastering than I do - with some very minor tweaks. Thanks @lewisleval, hopefully Afterglow will make it into my workflow and save me a lot of time - perhaps you should think about creating a range of mastering apps tailor-made for other genres.
I tried running some presets from Exosphere into both to compare them. With Klevgrand you have to dial it down a bit to match them as afterglow is more subtle. Overall, after playing with them both for a while I preferred afterglow. It’s much simpler to use and brought out the details in the sound nicely. One thing I noticed, I checked the stereo widening with Toneboosters GonioMeter and afterglow did a better job in this respect, with klevgrand it was showing correlation problems with its stereo widening above 10Khz.
Thanks @cytone …really appreciated !
I grabbed it in the end… still exploring.
As @pbelgium will know iPhone is fiddly, also it doesn’t load as an au in wavebox..
I use grand finale 2 inside wavebox, load au, set your dials and render the result,
Hopefully that might get fixed.
I tried auto in afterglow on one track and it super compressed and flatted the track added some pulsing artefacts… might’ve already applied a preset though…not too sure… will try and recreate.
I’ve had a few successful,more subtle results too, will keep testing!
I would have considered most of what we’re dealing with here as entertainment….particularly illustrated on some of the more friction filled threads.🤷♂️
Has anyone been able to load this as an AU in Wavebox?
I’m getting black screen and crashes?
No response from @lewisleval
Email bounced,
??
I like to master inside wavebox using Klevgrand Grand Finale 2, this must be possible???
Can confirm, not working in Wavebox, also TwistedWave - works fine in Neon Audio Editor, AUM, Cubasis, and Koala.