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Kotlin app / Android / Ages 2–5

Rongtuli.

রংতুলি, the paintbrush: colouring, music and first letters and numbers for little children, in English and Bangla, with Tuli the tailorbird.

Rongtuli app icon: Tuli the tailorbird holding a paintbrush

Screenshots

Home screen with Tuli the tailorbird and tiles for colouring, music, learning, games and stickers A rickshaw colouring page with the fill, brush and sticker tools and 24 colours A cat picture to colour by number Rainbow piano with the next key of a song lit up The Bangla letter ক with a banana for কলা, half traced with a crayon A four-piece jigsaw of a fish

What you get

120 colouring pages

Animals, vehicles, fruit and food, dinosaurs, the sea, space, Bangladesh, and festivals such as Eid and Pohela Boishakh, all drawn for small hands with big shapes.

Colour that stays inside the lines

Tap to fill, three fat brushes, a rainbow brush, an eraser, stickers and undo. Pictures are kept as your child left them and can be saved to the gallery.

Colour by number and by letter

Twenty-four pictures to colour by number or by letter, in English or Bangla.

Music

Piano, xylophone and eight drums including a dhol and a tabla, with eight songs to play along with: the next key lights up and waits.

ABC and বর্ণমালা

A to Z, স্বরবর্ণ and ব্যঞ্জনবর্ণ, each with a picture word, read aloud and traced with a big crayon.

Numbers, shapes and colours

Numbers 1 to 20 in both languages to see, hear and tap to count, with shapes and colours to name.

Gentle games

Jigsaws, a shape puzzle, memory cards, odd one out, patterns, and first sums, each with three levels and no timers or losing.

Stars and stickers

Every finished activity earns a star, and stars bring stickers for the sticker book and the colouring pages.

For grown-ups

Rongtuli works offline, needs no account, and keeps everything your child makes on the device. There are no adverts while children play: the only advert is on the grown-ups’ page, behind a check that young children cannot pass, and it is child-directed and non-personalised.

Every learning, music and game activity is free, with 48 of the colouring pages. One optional purchase opens all 120 pages and removes the advert. There is no subscription.

Questions and suggestions: [email protected]