Tune it. Sing it. Hold the sruti.
An instrument tuner and sruti box in one app. Tune a guitar, bass or ukulele, read any note, see which swara you are singing against your own Sa, and play a tanpura drone tuned to it.
- साSa
- रेRe
- गGa
- मMa
- पPa
- धDha
- निNi
Four tools, one tuner
Pitch detection runs on your phone. Sound is never recorded or sent anywhere.
Guitar, bass, ukulele
Standard, Drop D, D standard, Open G, Open D, DADGAD, half step down, 4-string bass and ukulele GCEA. Sruti finds the nearest string by itself, or lock a string by tapping it.
Chromatic
Read any note from 30 Hz to 2 kHz, with its octave and how many cents sharp or flat it is.
Swara (सा रे ग म प ध नि)
Set your Sa and see the swara you sing or play: Sa, komal or shuddh Re, Ga, Dha, Ni, shuddh or tivra Ma, Pa. Mandra, madhya and taar saptak, with the deviation in cents.
Pick your Sa
Choose the note with its Kali / Safed number, octave 2 to 4, and fine tune it by up to 50 cents. Optional just-intonation ratios and Devanagari names.
Tanpura drone
A synthesized tanpura (Pa Sa Sa Sa, Ma Sa Sa Sa or Ni Sa Sa Sa) or a steady sruti (Sa Pa), tuned to your Sa, with tempo and volume controls.
Adjustable reference
Set the A4 reference pitch anywhere from 430 to 450 Hz. No ads, no tracking, no account.
How to use it
Pick a tab at the bottom and start making sound.
- Guitar: choose a tuning, pluck a string and turn the peg until the meter is centred and in tune.
- Chromatic: play or sing any note to read its name, octave and cents.
- Swara: pick your Sa, then sing or play. Sruti shows the swara, its saptak and how far you are from it.
- Drone: choose a tanpura or sruti pattern, set tempo and volume, and practise against it. It plays while the app stays open, also with the screen off or another app in front.
Permissions and privacy
Everything runs on your phone. Audio is never stored or sent. The only network call is the update check in Settings.
| Microphone | The tuner tabs listen to your instrument or voice to find the pitch. Android asks when you first open one. The drone needs no permission. |
|---|---|
| Internet | Only for the update check in Settings. |
Requirements
Android 8.0 (API 26) or newer, with a microphone for the tuner tabs.
Install
Sruti is not on Google Play. Tap Download APK on your phone and open the file. If Android asks, allow your browser to install unknown apps. Or install Ash Store once and get updates from it.