Estua: An endless sound space for focus and sleep

Are you tired of repetitive playlists or those empty 30-minute background music tracks? Estua offers a completely different sound experience. No pre-recorded audio files. No predictable loops that pull your brain away from focus. Every sound you hear is generated directly on your phone in real-time — continuously changing, entirely unique, and never repeating.

Why is Estua different? The biggest weakness of current sound apps is repetition. The human ear is very sensitive; whenever it recognizes a loop, you will inadvertently be pulled out of a relaxed state. Estua thoroughly solves this issue with an audio engine that automatically renders on the device, providing a natural and endless flow of sound.

Four specialized sound spaces:

• Sleep: Minimalist, warm tones to help you drift into deep sleep.
• Relaxation: A wide, soft sound space to relieve tension.
• Focus: A steady rhythm that eliminates surrounding noise for effective work.
• Recovery: Gentle sounds to help balance your body after intense activity.

Outstanding features:

• Self-evolving music: The Living mode automatically shifts the music style so your surroundings always feel fresh without being distracting.
• 100% Offline Operation: No internet required, no account creation needed, and no streaming data consumption.
• Sharing & Exact Recreation: Each listening session is tagged with a "seed code." You can input this code to listen to the exact sound you liked again or share the link with friends.
• Keepsake: Supports exporting listening sessions to high-quality WAV files (5, 15, or 30 minutes).
• Work & Health Tools: Integrated Pomodoro, sleep timer (volume gradually decreases and then turns off), sleep reminders, and streak tracking.
• Support for Exercise & Breathing: Guides breathing rhythms with sound without looking at the screen. Sync Mindful Minutes data with Apple Health and supports Siri Shortcuts.
• Intelligent Adaptation (Optional): Automatically adjusts sound according to heart rate, movement, and environmental noise (default is off).

Absolute Privacy We do not collect data. Estua does not require an account, does not embed tracking SDKs, and no information leaves your device. The label "Data Not Collected" on the App Store is our genuine commitment, not a marketing gimmick.

Transparent Pricing Enjoy 90 minutes for free each day: Unlock the full power of the engine, 100 sound styles, and completely ad-free. Upgrade to Estua Premium for unlimited duration, WAV Keepsake file exports, and unlimited access to Movement sessions.