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Coastline - Audio Effect

Coastline - Audio Effect

Instant atmosphere generator

10 ratings
1 review
🎵 Music
$14.99

Details

  • Released
  • Updated
  • June 25, 2026
  • July 27, 2026

Features

Developer

Aqeel Aadam
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About

This app generates unique audio atmospheres and textures for music production. It uses additive and granular synthesis to add depth and character to tracks, offering extensive modulation and a dual-engine sustainer.

✓Dual-engine audio sustainer
✓Additive and granular synthesis
✓Custom sample support
✓Intermodulation and advanced filtering
✓Extensive modulation options
✓Cross-platform preset sharing
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What's New in Coastline

1.0.2

July 27, 2026

- Added an option to include a dry/wet slider by default. - Added the ability to lock the input volume when loading presets. - Fixed crashes with reloading projects that include audio. - Modulation sources can now be dragged directly to other modulation amounts, to modulate them. - Fixed Audio Matrix samples not playing until a Sustainer starts. - Improved efficiency of graphics rendering. - Fixed some graphics issues with animations. - Added some parameters for automation ("learn")

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User reviews

Most RecentHighest RatedLowest Rated

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.
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FAQ

What is Coastline?

Coastline is an audio effect application designed to generate unique atmospheres and textures for music. It utilizes a dual-engine sustainer with advanced synthesis and filtering capabilities to enhance musical compositions.

What kind of synthesis does Coastline use?

Coastline employs both additive and granular synthesis. The 'Tide' engine uses additive synthesis to reimagine sound frequencies, while the 'Glade' engine uses granular synthesis to stretch sounds infinitely without clicks.

Can I use my own samples with Coastline?

Yes, Coastline supports custom samples. You can load your own samples into the 'Audio Matrix' to introduce entirely new textures and intermodulate them with other audio channels.

How does Coastline handle modulation?

Coastline offers extensive modulation capabilities. You can modify any control using multiple LFOs, sequencers, smooth random sources, and performance effects to create dynamic and evolving sounds.

Is Coastline available on multiple platforms?

The application is available for iPhone, iPad, and iPod. Desktop versions for macOS and Windows are also available in VST3, AU, and AAX formats.

How much does Coastline cost?

Coastline is a paid application, priced at $11.99. This one-time purchase grants you full access to all of its features.

Does Coastline have ads?

No, Coastline is ad-free. As a paid application, it does not contain any advertisements, allowing for an uninterrupted creative workflow.

How often is Coastline updated?

Coastline was last updated on June 26, 2026, with version 1.0.1. While specific update frequency isn't detailed, this indicates ongoing support and development from the developer.