Afterglow vs UVB
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Afterglow
This app provides a professional audio mastering process specifically designed for ambient music. It offers automated starting points and a five-stage signal chain to enhance tonal shaping, harmonic warmth, cohesion, stereo imaging, and final limiting for immersive soundscapes.
- Automated audio analysis and configuration
- Five-stage mastering signal chain
- Tonal shaping with tilt EQ and shelves
- Harmonic saturation for analogue warmth
- Bus compression for cohesion
- Mid/side processing for stereo field enhancement
- True-peak look-ahead limiter
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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.
UVB
This app recreates the eerie sound and look of Russian numbers stations, like the famous UVB-76. It allows you to trigger broadcasts for creative projects, streams, or as a prop, offering an offline emulation of these mysterious shortwave signals.
- Recreates UVB-76, the Buzzer
- Emulates Pip and Squeaky Wheel signals
- Offline functionality
- Trigger broadcasts on cue
- Cold War prop for streams/videos
- Ambient music layering
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UVB-76, the Buzzer, and other Russian numbers stations, recreated on your iPhone. Unlike a real numbers station, this app can start a transmission on cue. IS IT REAL? No, and that is the point. This is an offline emulator, not a receiver. It does not pick up the live signal from Russia. It recreates the eerie sound and look of a shortwave numbers station, so you can trigger a broadcast whenever you want, for a performance, a stream, a video, an installation, a game, or as a prop. ABOUT UVB-76 AND THE BUZZER UVB-76, nicknamed the Buzzer and sometimes called Russia's doomsday radio, is a shortwave station on 4625 kHz that has broadcast a monotonous buzzing tone for decades from near Moscow. Every so often the buzz stops and a Russian voice reads a string of numbers and code words. No one officially claims it, its purpose has never been confirmed, and that mystery is exactly why people go looking for it. BEYOND THE BUZZER The app also recreates two more famous signals: the Pip on 5448 kHz and the Squeaky Wheel (S32) on 5473 kHz. Switch between the three like presets, each on its own frequency, with its own marker tone and its own Russian voice reading coded messages. WHO USES IT Musicians layer it into ambient and experimental tracks. Streamers and filmmakers use it as a Cold War prop. Fans of the mystery just let it buzz in the background. FREQUENTLY ASKED QUESTIONS Is UVB-76 still broadcasting? Yes. The real station near Moscow is still active on 4625 kHz and has never officially gone silent. This app is a standalone recreation of it, so it keeps buzzing even with no radio and no internet. What is UVB-76 used for? Officially undisclosed. Theories range from a military command channel to simply keeping a frequency occupied. In this app the buzz and the numbers are yours to trigger for creative work. How do you listen to the real UVB-76? You need a shortwave radio tuned to 4625 kHz, or an online WebSDR receiver. This app does not receive that signal. It emulates the experience, so you can hear a numbers station anytime, with no equipment at all. Where is UVB-76 located? The transmitter is believed to sit near Povarovo, not far from Moscow, in Russia. What does the Buzzer do? It transmits a repeating buzz tone almost continuously, interrupted now and then by spoken Russian letters and numbers in the Monolith format. Are there still numbers stations? Yes. Numbers stations still send coded broadcasts on shortwave today, and enthusiasts around the world log and record them. This app is a tribute to that world. Has a numbers station ever been decoded? The messages are thought to use one-time pads, which are effectively unbreakable without the key, so the codes themselves stay secret. The fascination is in the ritual, not the answer. Works fully offline on iPhone and iPad. No signal required.
Screenshots
Verdict
The clearest difference is price: UVB at Free against Afterglow's $7.99. Afterglow's advantage is ratings volume (5 vs 1). On rating, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
UVB is free to download; Afterglow costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Afterglow against 5.0 for UVB. That said, the two scores are not equally well evidenced: Afterglow has 5 ratings behind it against 1, so its average is the more settled of the two.
| Parameter | Afterglow | UVB |
|---|---|---|
| Price | $7.99 | Free — better |
| Rating | 5.0 (5 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | 1 |
| Update frequency | — | Every 9 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 21 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | LEWIS GARETH K LE VAL | Maxim Oransky |
In-app purchases
Afterglow
No in-app purchases
UVB
No in-app purchases









