Sur Tuner: Tanpura, Tabla, Sur

Sur Tuner is an all-in-one Indian Classical Music Riyaz studio: a precision Swara pitch tuner, concert-grade acoustic Tanpura drone, pitch-matched Tabla accompaniment, and 1-tap Riyaz vocal recorder—100% free, offline, and completely ad-free.

Whether you are practicing daily vocal Riyaz (Swar Sadhana, Alankar, Sargam, Khayal) or tuning an Indian instrument, Sur Tuner replaces western chromatic guitar tuners with a circular Swara mandala rooted in Adhara Shadja (relative Sa).

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4-IN-1 RIYAZ STUDIO
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1. REAL-TIME CIRCULAR SWARA PITCH TUNER
• Instant Vocal & Instrument Pitch Monitor: Watch your voice, Bansuri, Harmonium, Violin, or Sitar align on the 12-Swara dial with zero latency.
• Relative to Your Sa (Safed & Kali Scales): Select any tonic from C to B (Safed 1 to Kali 5). All 12 Swaras (Shuddha, Komal Re/Ga/Dha/Ni, Teevra Ma) map dynamically to your scale.
• Microtonal Cent & 22 Shruti Precision: Real-time cent deviation meter (-50 to +50 cents) turns green when you lock into perfect Sur.
• Saptak (Octave) Indicator: Automatically detects Mandra Saptak (Lower), Madhya Saptak (Middle), and Taar Saptak (Upper) octaves.
• Bilingual Swara Labels: Switch seamlessly between Devanagari Hindi (सा रे ग म प ध नि) and English (Sa Re Ga Ma Pa Dha Ni).

2. CONCERT-GRADE ACOUSTIC TANPURA DRONE
• Authentic Real Tanpura Sound: Dual-layer acoustic resonator bed paired with real open-string plucks for a rich, meditative Jiva overtone.
• Pa, Ma & Ni String Tuning: Switch effortlessly between Pancham (Pa), Madhyam (Ma), and Nishad (Ni) first-string configurations.
• Continuous Background Playback: Practice with screen off or control Tanpura and Tabla directly from your lock-screen notification.

3. PITCH-LOCKED ACOUSTIC TABLA ACCOMPANIMENT
• Tuned to Your Sa: Real acoustic Dayan and Bayan samples that automatically pitch-match to your selected tonic scale.
• Essential Taals & Prakars: Practice with Teentaal (16 matras) and Keherwa (8 matras), including Mool Theka, Bhajani, and Drut variations.
• Wide Tempo & Laya Control: Smooth 40 to 320 BPM slider with live Matra beat cycle, Sam/Tali/Khali indicators, and Bol display.

4. 1-TAP RIYAZ RECORDER & INSTANT SHARE
• Studio-Clear Vocal Recording: Tap the mic icon on the tuner screen to record your Riyaz live while monitoring your Swara stability ribbon.
• Smart Acoustic Auto-Balance: Built-in vocal clarity DSP automatically balances speaker Tanpura and Tabla volume so your voice always shines through clearly.
• Share with Your Guru in 1 Tap: Export compact, high-quality .m4a audio recordings directly to WhatsApp, Telegram, or Google Drive for music class feedback.

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CRAFTED FOR INDIAN MUSICIANS
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• 6 Curated Themes: Midnight Cyan, Royal Gold, Carnatic Crimson, Forest Bansuri, Sunset Marigold, and Daylight Ivory (Light Mode).
• Custom Mic Sensitivity: Fine-tune microphone gain to filter room noise or pick up soft humming.
• Built for Hindustani & Carnatic Vocalists, Bhajan & Kirtan singers, Bansuri flute, Harmonium, Sitar, Sarod, Veena, Violin, Dilruba, and Esraj players.

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100% FREE, OFFLINE & PRIVACY-FIRST
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• Zero Ads & No Subscriptions: No banners, popups, or audio interruptions during your sacred Riyaz.
• 100% Offline & Lightweight: Under 3 MB download. Works anywhere without internet.
• Complete Privacy: Pitch analysis runs ephemerally in device RAM, and your Riyaz recordings stay 100% private on your phone until you choose to share them.

Download Sur Tuner today and bring effortless Sur and Laya to your daily Riyaz!

Recent changes:
Seamless Microphone Onboarding: Fixed an issue on fresh installs where microphone access wasn't prompted promptly.
Permission Recovery & Settings Shortcut: Added clear permission status banners and 1-tap buttons to grant access or open App Settings if previously declined.
Instant Resume Sync: Enabling microphone permissions in device settings now immediately activates live pitch tracking upon return without an app restart.