# Byna: Binaural Beats & Sleep — Free Focus & Meditation Tones > Binaural beats app for sleep, focus, and meditation with real-time audio synthesis. (iPhone/iPad app by Felix Asencio.) - Source: https://appshunter.io/ios/app/byna-binaural-beats-and-sleep/id6760296839 (this page in markdown: same URL + `.md`) - Developer: [Felix Asencio](https://appshunter.io/developer/1883692175) - Category: Health & Fitness, Lifestyle - Price: Free - Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed - Age rating: 12+ - Requires: iOS 15.1 · 40 MB - Languages: English - Released: 2026-03-12 - Data updated: 2026-06-05 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/byna-binaural-beats-and-sleep/id6760296839/reviews.md ## What is Byna? Fall asleep faster. Focus deeper. Meditate without the noise. Byna plays two slightly different tones -- one in each ear -- and your brain does the rest. It's called binaural beats, and it's been studied since the 1970s. Your brainwaves naturally sync to the difference between the tones, gently guiding you toward the state you choose. Completely free. No ads. No accounts. No data collection. Ever. -- 7 SCIENCE-BACKED PRESETS -- Each preset is tuned to a specific brainwave band: - Wind Down (Delta, 2 Hz) -- Ease into deep sleep - Quick Recharge (Delta, 3 Hz) -- A restorative pause - Open Mind (Theta, 5 Hz) -- Explore quiet awareness - Still Mind (Theta, 6 Hz) -- Settle into meditation - Quiet Focus (Alpha, 10 Hz) -- Calm, clear concentration - Deep Work (Beta, 18 Hz) -- Sustained mental focus - Peak Awareness (Gamma, 40 Hz) -- Heightened clarity -- REAL-TIME AUDIO SYNTHESIS -- Byna generates pure tones in real time -- no pre-recorded loops, no compressed audio files. Each session creates fresh sine waves at precise frequencies, so what you hear is mathematically exact. Carrier frequencies are held in the 200-500 Hz range where binaural perception is strongest. -- VISUAL ANIMATIONS -- 4 animation modes -- Pulse, Morph, Glow, and Ripple -- sync to your session's beat frequency. Watch the visuals breathe at the same rhythm your brain is following, or close your eyes and just listen. -- PINK & BROWN NOISE -- Layer soft pink or brown noise under your binaural tones to mask distracting sounds. Helpful in noisy environments or when the pure tones feel too exposed on their own. -- THOUGHTFUL DESIGN -- - Sessions start with a gentle fade-in and gradual frequency progression - Volume is capped at 70% for hearing safety - Sleep presets skip the fade-out (because you're asleep) - Works completely offline -- no internet needed - Keep Screen On option for uninterrupted visual sessions - Auto-fullscreen mode for immersive listening -- WHY FREE? -- Most binaural beats apps charge $10-15/month for what is, at its core, two sine waves. The science is public domain. The math is simple. Byna exists to prove that a good binaural beats experience doesn't need a paywall. No premium tier. No "unlock for $9.99/month." Just headphones and a calm mind. -- HEADPHONES REQUIRED -- Binaural beats only work with headphones or earbuds. Each ear needs to hear a different frequency for the effect to occur. Any wired or wireless headphones will work. Built with care. Free forever. ## Key features - Binaural beats for sleep and focus - 7 science-backed presets - Real-time audio synthesis - Customizable visual animations - Pink and brown noise layering - Offline functionality - Hearing safety volume cap ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/byna-binaural-beats-and-sleep/id6760296839/reviews.md ### 5/5 — ❤️❤️❤️❤️❤️ *2026-03-20* I really love this app! I like the meditation tracker, ranks and badges! I’m trying to reach Zen Master level! ## Frequently asked questions about Byna ### What are binaural beats and how does Byna use them? Binaural beats are auditory illusions created by playing two slightly different frequencies, one in each ear. Byna uses this principle to gently guide your brainwaves towards desired states like sleep or focus, based on scientific research. ### Does Byna have ads? No, Byna is completely free and contains no advertisements. The developer has stated that the app is free forever and does not include any ads. ### What devices does Byna support? Byna is available for iPhone, iPad, and iPod. It is designed to work on iOS devices. ### How does Byna ensure hearing safety? Byna caps the volume at 70% to protect your hearing during use. This thoughtful design choice ensures a safe and comfortable listening experience. ### Can I use Byna without an internet connection? Yes, Byna works completely offline. This means you can use it anywhere without needing an internet connection, making it ideal for travel or areas with poor reception. ### What is the age rating for Byna? Byna has an age rating of 12+. This indicates it is suitable for users aged 12 and older. ### How often is Byna updated? The latest version of Byna is 1.2.3, and it was last updated on March 28, 2026. This suggests a relatively recent update, indicating ongoing development. ### What are the different presets available in Byna? Byna offers 7 science-backed presets: Wind Down (Delta, 2 Hz) for sleep, Quick Recharge (Delta, 3 Hz), Open Mind (Theta, 5 Hz) for awareness, Still Mind (Theta, 6 Hz) for meditation, Quiet Focus (Alpha, 10 Hz), Deep Work (Beta, 18 Hz) for concentration, and Peak Awareness (Gamma, 40 Hz) for clarity. ## Version history (last 5 releases) ### 1.2.3 — 2026-03-28 Removed unused in-app purchase framework for a cleaner, lighter app. Byna is and always will be 100% free. Headphones required for binaural beats to work. ### 1.2.2 — 2026-03-25 Your calm just got a companion. NEW: - Journey tab — track sessions, streaks, milestones, and your listener rank - Volume slider now adjusts audio during playback IMPROVED: - Gentle review prompt after your third session Headphones required for binaural beats to work. ### 1.2.1 — 2026-03-20 Small improvements, same calm. IMPROVED: - Better search visibility with updated metadata - Gentle review prompt after your third session Headphones required for binaural beats to work. ### 1.2.0 — 2026-03-19 Track your practice. NEW: - Journey tab — see your total sessions, minutes, and streaks at a glance - Rank progression from Newcomer to Sage as you build your practice - 16 milestone badges for sessions, streaks, bands explored, and more - Most-played preset and sessions-by-brainwave-band breakdown Headphones required for binaural beats to work. ### 1.0 — 2026-03-12 No release notes. ## Related topics [free binaural beat apps](https://appshunter.io/ios/topics/free-binaural-beat-apps) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*