Focus is fragile. Sleep is elusive. Analog & acoustic music, natural soundscapes, and custom noise — informed by research on attention, sleep, and sound perception. Focus Collection is Spindles’ dedicated focus system, offering three distinct paths to sustained attention. Harmonic Fields provides distraction-free expansive atmospheres, Melodic Focus offers evolving melodies and gentle motion, and ADHD Beats delivers rhythmic structure for restless minds. Together they form a handcrafted approach to deep work built from analog synthesis, vintage instruments, custom noise profiles, and natural recordings. Rather than looping a single texture or shuffling tracks, these listening environments are designed to support concentration gently and sustainably — helping you drop into flow and stay there. Sleep Spindles is a dedicated sleep system designed around the full arc of a night’s rest. Rather than playing a single track on loop, Sleep Spindles moves through three intentional stages: a calming introduction to ease you toward sleep, a deep overnight listening environment to keep you there, and a gentle Wake Transition to bring you back gradually. Every sound is chosen and sequenced with the same analog and acoustic care that defines the rest of Spindles. Beyond Focus Collection and Sleep Spindles, Spindles opens into an extensive sound environment spanning ten listening contexts — Sleep, Focus, Calm, Meditation, Yoga, Movement, Morning, Soundscapes, Tinnitus, and Acoustic. Explore purpose-composed music, immersive field recordings, custom noise profiles, binaural beats, and a curated collection of classical and contemporary piano repertoire recorded on a concert grand piano in a softly reverberant space. Together they form a flexible toolkit for focus, sleep, calm, meditation, and everyday listening. Analog Craft. Research Core. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Focus Collection is Spindles’ dedicated focus system, offering three distinct paths to sustained attention. Harmonic Fields provides distraction-free expansive atmospheres, Melodic Focus offers evolving melodies and gentle motion, and ADHD Beats delivers rhythmic structure for restless minds. Together they form a handcrafted approach to deep work built from analog synthesis, vintage instruments, custom noise profiles, and natural recordings. Rather than looping a single texture or shuffling tracks, these listening environments are designed to support concentration gently and sustainably — helping you drop into flow and stay there. Sleep Spindles is a dedicated sleep system designed around the full arc of a night’s rest. Rather than playing a single track on loop, Sleep Spindles moves through three intentional stages: a calming introduction to ease you toward sleep, a deep overnight listening environment to keep you there, and a gentle Wake Transition to bring you back gradually. Every sound is chosen and sequenced with the same analog and acoustic care that defines the rest of Spindles. Beyond Focus Collection and Sleep Spindles, Spindles opens into an extensive sound environment spanning ten listening contexts — Sleep, Focus, Calm, Meditation, Yoga, Movement, Morning, Soundscapes, Tinnitus, and Acoustic. Explore purpose-composed music, immersive field recordings, custom noise profiles, binaural beats, and a curated collection of classical and contemporary piano repertoire recorded on a concert grand piano in a softly reverberant space. Together they form a flexible toolkit for focus, sleep, calm, meditation, and everyday listening. Analog Craft. Research Core. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Deep focus doesn't happen in 3-minute tracks. Harmonic Fields is a handcrafted 90-minute sonic arc — analog synthesis, vintage instruments, custom noise profiles, and natural recordings — designed around how sustained attention actually works. For reading, writing, creative work, and extended concentration. Sleep Spindles guides your whole night through three stages: a calming introduction to help you fall asleep, deep overnight listening, and a gentle Wake Transition to bring you back. Spindles is an extensive toolkit: analog and electronic tones, immersive field soundscapes, and custom noise profiles — all created on analog gear. A curated collection of classical and contemporary piano repertoire, recorded on a concert grand piano in a softly reverberant space to soothe the nervous system. All organized within an elegant interface with deep timer, scheduling, and playlist features.

Deep focus doesn't happen in 3-minute tracks. Harmonic Fields is a handcrafted 90-minute sonic arc — analog synthesis, vintage instruments, custom noise profiles, and natural recordings — designed around how sustained attention actually works. For reading, writing, creative work, and extended concentration. Sleep Spindles guides your whole night through three stages: a calming introduction to help you fall asleep, deep overnight listening, and a gentle Wake Transition to bring you back. Spindles is an extensive toolkit: analog and electronic tones, immersive field soundscapes, and custom noise profiles — all created on analog gear. A curated collection of classical and contemporary piano repertoire, recorded on a concert grand piano in a softly reverberant space to soothe the nervous system. All organized within an elegant interface with deep timer, scheduling, and playlist features.

What's New in Version 2.5 Introducing Harmonic Fields — a new long-form listening experience designed to support sustained focus and deep work. Harmonic Fields is a 90-minute progression of slowly evolving sonic environments created to engage attention gently without demanding it. Built from modular synthesis, vintage instruments, subtle rhythmic structures, and immersive natural recordings — designed to create a stable cognitive atmosphere for reading, studying, creative work, and extended concentration. This release also expands and refines Sleep Spindles, our guided sleep-flow system designed to support the full arc of the night: Fall asleep with calming introductory music Transition into deeper overnight listening Wake gently with customizable Wake Transition settings Additional improvements: Refined navigation and playback behavior Updated Live Activity interactions Improved Sleep Spindles customization flow Visual and layout refinements throughout Performance improvements and bug fixes Handcrafted. Independent. Built for your brain.

What’s New in Version 2.5 Introducing Harmonic Fields — a new long-form listening experience designed to support sustained focus and deep work. Harmonic Fields is a 90-minute progression of slowly evolving sonic environments created to engage attention gently without demanding it. Built from modular synthesis, vintage instruments, subtle rhythmic structures, and immersive natural recordings, these pieces are designed to create a stable cognitive atmosphere for reading, studying, creative work, and extended concentration. This release also expands and refines Sleep Spindles, our guided sleep-flow system designed to support the full arc of the night: • Fall asleep with calming introductory music • Transition into deeper overnight listening • Wake gently with customizable Wake Transition settings Additional improvements: • Refined navigation and playback behavior • Updated Live Activity interactions • Improved customization flow for Sleep Spindles • Visual and layout refinements throughout the app • Performance improvements and bug fixes Thank you for listening and supporting independent music-driven wellness tools.

UX refinements

Minor ux adjustments.

Added a return to Playback Source feature.

Further UX refinements

UX refinements.

Advancements to Sleep Spindles mode, adding wake transition.

New UX. Recently played feature.

Sleep Spindles mode, bug squashing.

Sleep Spindles mode and analytics.

analytics

Sleep Spindles system and quick jumps to categories.

Sleep Spindles system.

Sleep Spindles Mode and email functions.

Sleep Spindles system.

Album filtering by type with quick jump buttons on home screen.

Fresh look with more descriptions and hints on the home page.

Fresh-look with more descriptions and hints on the home page.

Updates to handle global load-balancing servers/CDN. Cosmetic tweaks. Album play from artwork.

Scheduled Playback, Fadeout Timer, Meta Playlist, Notifications, Live Activities, Share Button.