Karunattu · Carnatic music software
A tuner, a tampura, sancara drills, gamaka coach, voice analysis, and a Carnatic phrase composer — built on the actual grammar of the system.
No card needed for the free tools. Cancel any time during the trial.
Instrument synth calibrated to
Spectrum-regression tests lock every synth within ±2 dB per octave of the reference.
Built differently
Every other music app treats Carnatic as a folder of MIDI presets. We treat it as a system — with grammar, source citations, and tests that catch when a raga's scale gets quietly broken.
Every raga, every signature phrase, every grading note is grounded in Sambamoorthy or Subbarama Dīkṣitar's SSP. The 37 corrections we shipped each carry the inline source comment that justified them.
Server-side YIN with parabolic interp. Same algorithm as studio tuners. Cross-validated against librosa.pyin on 20 harmonic-tone fixtures; the audio QA sidecar hard-gates any regression.
Voice (MSS), Veena (Chitti Babu), Violin (Lalgudi), Flute (Mali), Nadaswaram (Chinna Moulana), Mṛdaṅgam (Umayalpuram Sivaraman). Spectrum-regression tests lock the match within ±2 dB per octave.
The pitch detector, the raga grammar, the synth engines, the mastering chain — all behind `import 'server-only'`. Your browser receives audio bytes and JSON, never algorithms. Honest about what we're doing with your microphone.
554 raga-grammar invariants. 29 gāyaka-doṣa fault-detection cases. 17 pitch-detector tolerance bands. Adding a new raga that breaks an existing pakad fails CI before it ships.
Web today. iOS tomorrow (same Apple ID). Plus and Pro share a single codebase split by SKU flag — your progress, snapshots, and saved Sa follow you. The math you trusted in the browser is the math the phone runs.
What's in it
Practice
Compose
Produce
ProHow it works
01
Open the tuner, sancara practice, or voice coach. Audio frames stream to the server in 100ms chunks, processed per-request, never stored.
02
YIN pitch detection, 29-doṣa fault analysis, raga grammar scoring. Your browser sees outputs (hz, cents, swara) — never the algorithms themselves.
03
Cents-per-swara, gamaka rate + depth, vikala flags. Tap any flat sample to hear what you should have sung — then re-attempt without leaving the page.
Pricing
7-day free trial on Plus. Cancel any time. Lifetime option on Pro if monthly billing isn't your style.
Karunattu Plus
For learnersMost popular for daily riyāz
$4.99
/ month
or $39 / year · save 35%
7-day free trial · no card needed to start
Karunattu Pro
For performers + producersEverything in Plus, plus the studio
$19.99
/ month
or $199 / year · save 17%
or $299 lifetime — one payment, every future feature
Both editions include
Feature by feature
Featured
Every raga ships with ārōhaṇa, avarōhaṇa, signature phrase, mood and a primary-source citation. The catalogue has 79 more.
S R₂ G₃ P D₂ Ṡ
Auspicious
S R₂ G₃ M₁ P D₂ N₃ Ṡ
Major-mode warmth
S R₂ G₃ M₂ P D₂ N₃ Ṡ
Bright, exalted
S R₂ G₂ M₁ P D₂ N₂ Ṡ
Devotional, deep
S R₁ G₂ M₁ P D₁ N₂ Ṡ
Plaintive, ascetic
S R₂ G₃ M₁ P D₂ Ṡ
Stately, romantic
Carnatic context
Every composer and every instrument verified against primary sources — no AI hallucinations, only attested facts. Available on every plan.
Composers
Tyāgarāja (1767–1847) and Muttuswāmi Dīkṣitar (1775–1835) — biography, signature gītī & gamaka, and the full kṛti catalogs grouped by Pañcaratna, Navāvaraṇa, Navagraha, Pañcabhūta. Every raga + tāla cross-referenced to Subbarama Dīkṣitar's 1904 SSP.
Enter the dungeon →
Instruments
The eleven principal Carnatic instruments — Voice, Violin, Mṛdaṅgam, Ghaṭam, Kañjirā, Morsiṅg, Tampura, Vīṇā, Veṇu, Nāgasvaram, Tavil — with verified exponents (Mali · MSS · Bāluswāmi · Palghat Mani Iyer · …) and confirmed dates.
Enter the gallery →
How it's built
Every raga's scale degrees and signature phrase reads from a single source-of-truth grounded in Sambamoorthy's South Indian Music and (where the data needs it) Subbarama Dīkṣitar's Saṅgīta Sampradāya Pradarśinī. A regression test locks the signature-phrase ↔ degree-array consistency so the kind of bug that lets you accidentally teach a wrong Mōhanam can't ship.
FAQ
Can I cancel any time?
Yes. Cancel from your account page in one click. You keep access through the end of the current billing period.
What's on the free tier?
The tuner, the raga catalogue, the dungeons (composers + instruments), and a phrase preview. Everything practice- and production-grade lives behind Plus / Pro.
Lifetime vs annual on Pro?
Lifetime is $299 paid once — every future Pro feature included, never billed again. Annual is $199 / yr (save 17%). Monthly is $19.99. Pick whatever matches your runway.
Will my subscription work on iOS later?
Yes. Web and iOS share one codebase split by SKU flag. Sign in with the same Apple ID and your progress, snapshots, and saved Sa carry over.
Where does the pitch math actually run?
Server-side. Always. Your browser ships audio frames to the API and receives back hz / cents / chroma. The YIN code, the raga grammar, the synth engines, the LUFS mastering — none of it ever lives in your tab.
What about teacher mode?
On the Pro roadmap. Local-batch student-drift aggregation — a teacher can see where each student is consistently flat or sharp without their audio ever leaving the device.
Do you store my recordings?
No. Audio frames are processed per-request and discarded. We keep the pitch trajectories you explicitly save (snapshots), nothing else.
Refund policy?
Plus is free for 7 days — if it doesn't click, cancel before the trial ends and you pay nothing. For paid charges, email us within 14 days and we'll sort it.
See what your morning riyāz looks like with cents-grade feedback and a real tampura playing under it. Free trial, no card needed.