Trazu Support

A painting app with real paint physics on your phone. The brush carries a finite charge of paint that depletes as you drag it, picks up and mixes with wet color already on the canvas, and responds to pressure and speed. Six mediums (oil, watercolor, charcoal, ink, pastel, and a basic medium), over twenty brush tips, and nine paper textures the paint actually catches on. Four study views (Value, Temperature, Saturation, Contrast) let you flip your own painting to find what is not working while you can still fix it. Fully offline, no account, no tracking.

Yes, free to start. The full paint engine, all six mediums, every brush tip, and all nine paper textures are unlocked from the first stroke, and you can save up to 10 drawings. Trazu Premium is a single $9.99 purchase, lifetime, with no subscription. It unlocks unlimited drawings and the four study views (Value, Temperature, Saturation, Contrast).

Every painter knows the moment a painting stops working before they know why. Value strips your work to grayscale so you can read its light-dark structure. Temperature maps warm against cool. Saturation shows where your color is doing work and where it has gone muddy. Contrast shows your edges and tonal separation. You diagnose your own painting while you paint it, not after it is too late to fix.

Open the gallery, select your drawing, and tap Export. Choose PNG or JPEG. Export is free for everyone, no Premium required.

After reinstalling Trazu or switching to a new device, open the paywall or Settings and tap Restore Purchases. You will need to be signed in to the App Store or Google Play account that bought Pro. Pro is yours for life, on every device tied to that account.

On your device only. We never upload your drawings to any server. There is no account, no sign-up, and no cloud sync. Uninstalling Trazu removes them.