InstruPlay

InstruPlay turns your phone into a musical instrument. Piano, guitar and violin — all three under your fingers, all of it offline.

THREE INSTRUMENTS

• Piano — all 88 keys. It is fully multi-touch, so you can press several keys at once and hold chords. Slide a finger across the keys for a glissando. The pedal button ties notes together so they keep ringing after you lift your hand.

• Guitar — 6 strings, 12 frets. In free mode you tap any fret to sound that note. Pick one of the Em, Am, C, G, D, Dm, E, A and F chords and the finger positions appear on the neck; drag across the strings to strum it. The faster you drag, the harder it is struck.

• Violin — 4 strings, fretless. Where you touch a string sets the pitch, and moving your finger sideways acts as the bow. Draw it quickly for a loud note, slowly for a soft one. The note keeps sounding for as long as you hold it.

PRACTICE MODE

Start playing without reading music. Notes fall down the screen and the key or string you need to play is highlighted.

• Wait mode: the song pauses until you play the right note. Nothing rushes you.
• Slow the tempo down to 40% and speed it back up as you get comfortable.
• Metronome, live score, streak counter and accuracy.
• Ten songs included: Twinkle Twinkle Little Star, Ode to Joy, Happy Birthday, Jingle Bells, Mary Had a Little Lamb, Dandini Dandini (a Turkish lullaby), Amazing Grace, Greensleeves, the opening of Für Elise and a C major scale.

EVERY SOUND IS MADE ON YOUR DEVICE

InstruPlay ships no audio recordings. Each note is calculated on the phone in real time, the moment you press: a hammered string for the piano, a plucked string for the guitar, a bowed string for the violin, each modelled separately. That is why the app is small, downloads nothing and works without an internet connection.

BUILT FOR BEGINNERS

• Every key and string is labelled with its note name.
• Choose between C-D-E and Do-Re-Mi note names.
• English and Turkish interface.
• Dark and light themes.

PRIVACY

• No account, no registration, no sign-in.
• No internet connection required and no data is ever sent anywhere.
• No device permissions requested at all.
• No ads and no in-app purchases.

For anyone starting out in music: children, curious beginners, people who want to try an instrument before buying one, teachers looking for a practice aid, and anyone who just wants something to play.