--- title: "Coastline - Audio Effect - Reviews, Revenue and Downloads in United States | Apple App Store" description: "Atmosphere machine. Texture generator. Harmonic workstation. A dual-engine audio sustainer with intermodulation, advanced filtering, support for custom samples, and more – all in the service of adding" --- # Coastline - Audio Effect — United States > Instant atmosphere generator ![Coastline App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/a8/8e/64/a88e646a-68a8-46a8-758c-7046eb8e50fe/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png) **Developer:** [Aqeel Aadam](https://apptail.io/developer/aqeel-aadam-kDbg) **Category:** Music **Rating:** 5.0/5 (12 ratings) **Price:** $14.99 **Bundle ID:** com.AqeelAadamMusic.Coastline **Store:** Apple App Store **Country:** United States **Version:** 1.0.5 (released 2026-09-30) **Original Release:** 2026-06-25 **App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6780281953) **AppTail Page:** [https://apptail.io/app/coastline-audio-effect-hcEA/united-states](https://apptail.io/app/coastline-audio-effect-hcEA/united-states) ## Coastline Description Atmosphere machine. Texture generator. Harmonic workstation. A dual-engine audio sustainer with intermodulation, advanced filtering, support for custom samples, and more – all in the service of adding depth and character to your music. Coastline uses a combination of additive and granular synthesis to stretch sounds infinitely. It creates complementary ambience for any sound or composition. It brings a textural “je ne sais quoi” that makes your tracks stand out and feel more alive. Move as quickly as you want: slap it on a track for instant atmosphere, or use it as the recording and processing hub of entire compositions. All recordings happen immediately and automatically – set one volume threshold, and sit back. ENGINES AND EFFECTS • Tide – an additive synthesizer for reimagining sound. Control which frequencies of the input are mapped to oscillators, rebalance them to highlight harmonic or inharmonic characteristics, and introduce new frequencies with waveshaping. • Glade – a granular synthesizer that stretches sound forever with no clicks or transients. Balance the original timbre of your sound against Tide’s distillation of it. • Audio Matrix – route any channel in Coastline to intermodulate another. Create unique harmonic distortions, or load samples to introduce a completely new texture. Includes built-in field samples for naturalistic textures. • Filter – a multi-mode filter for all audio in Coastline, featuring feedback modulation, stereo spread, and independent per-channel controls. • Reverb – a downsampling reverb with a highly configurable chorus section for blending the results of Coastline and introducing another layer of texture and modulation. FEATURES • Modulation – modify any control in Coastline with multiple LFOs, sequencers, smooth random sources, and performance effects. • Presets – full preset control over every parameter in Coastline. Cross-platform preset format for sharing with friends. • Waymaker – connect to Coastline’s sibling application, Waymaker, for sequencing and additional control over the pitch of Coastline’s output. Includes 20+ presets by Peter Bark and imago meri. Also available for macOS and Windows in VST3 / AU / AAX formats from Aqeel Aadam Sound. ## Coastline Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/87/d7/63/87d763d1-637e-adbe-4209-cb84a3e4761c/coastline_iphone_screenshot.PNG/2778x1284.png) ## Coastline Rating Breakdown in United States - 5 stars: 12 (100%) - 4 stars: 0 (0%) - 3 stars: 0 (0%) - 2 stars: 0 (0%) - 1 stars: 0 (0%) ## Coastline Reviews in United States ### ***** "The quest may be over" for an app as evocative as Michael Norris' Spectral Dronemaker AU plugin that I've been missing since abandoning MacOS. While I've found related iOS apps such as Velvet Machine, Magma, Cascade, Alteza or Stellarvox all uniquely useful, Coastline produces something closest to the mesmerizing wall of sound I recall from the former plugin. Playing my classical guitar through it, with an expression pedal assigned to vary hold time, opens a world of expression. -- jeffry-s, 2026-09-06 ### ***** "Lovely behind Guitar" This app makes really lovely, evolving drones that live very well behind solo lines and riffs. The modulation options make it really special for me: I can set it up so it only opens up for input at the beginning of a measure; so I can hit a chord, then noodle around with solos and licks over the top of it. Or I can just leave the input open at a particular threshold and let the app take in the louder bits while I’m playing and so they jangle together in new and interesting ways. And then set up an envelope to swell into the sound as the input goes quiet. And on and on. I also just love this dev’s background designs - they offer a really beautiful representation of what the app is doing to your sound. I’ll be playing around with this one for a long time. -- greteswogh, 2026-07-03 [View all Coastline reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews) ## Coastline Discovered Keywords - audio effect - coastline ## Coastline Available In - [United States](https://apptail.io/app/coastline-audio-effect-hcEA/united-states) - [Germany](https://apptail.io/app/coastline-audio-effect-hcEA/germany) - [Canada](https://apptail.io/app/coastline-audio-effect-hcEA/canada) - [Denmark](https://apptail.io/app/coastline-audio-effect-hcEA/denmark) - [Estonia](https://apptail.io/app/coastline-audio-effect-hcEA/estonia) - [Spain](https://apptail.io/app/coastline-audio-effect-hcEA/spain) - [Finland](https://apptail.io/app/coastline-audio-effect-hcEA/finland) - [Australia](https://apptail.io/app/coastline-audio-effect-hcEA/australia) - [Hungary](https://apptail.io/app/coastline-audio-effect-hcEA/hungary) - [Ireland](https://apptail.io/app/coastline-audio-effect-hcEA/ireland) - [Netherlands](https://apptail.io/app/coastline-audio-effect-hcEA/netherlands) - [Portugal](https://apptail.io/app/coastline-audio-effect-hcEA/portugal) - [Saudi Arabia](https://apptail.io/app/coastline-audio-effect-hcEA/saudi-arabia) - [Sweden](https://apptail.io/app/coastline-audio-effect-hcEA/sweden) - [Tunisia](https://apptail.io/app/coastline-audio-effect-hcEA/tunisia) - [Greece](https://apptail.io/app/coastline-audio-effect-hcEA/greece) - [Switzerland](https://apptail.io/app/coastline-audio-effect-hcEA/switzerland) - [Chile](https://apptail.io/app/coastline-audio-effect-hcEA/chile) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. 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