Signature App: The Best Mobile App for Drawing Your Signature

By Rahib Ali · Founder, DIYTech Labs

A signature app lets you create your handwritten signature on your phone and reuse it on any document. Draw Signature by DIYTech Labs has been doing exactly this for Android users for years: draw your signature once, save it, and place it on PDFs, photos and forms whenever you need it.

Why People Use a Signature App

• Sign contracts and agreement PDFs without printing anything
• Add a signature to photos and artwork as a watermark
• Fill forms quickly with a saved, ready-made signature
• Keep a consistent signature across all your documents

What Draw Signature Offers

• Draw naturally with your finger; adjust pen size and color
• Or type your name and choose a calligraphic signature font
• Export as a transparent PNG that sits cleanly on any document
• Signatures stay on your device — nothing is uploaded
• Free on Google Play, no account needed

Read the full details and download link on the Draw Signature app page.

How to Create a Signature in the App

1. Open the canvas and sign. After installing Draw Signature from Google Play, open the drawing area and sign your name with your finger, the way you would with a pen. Take a few attempts — the undo button exists because everyone needs them.
2. Make it look like ink. Set the pen thickness to something close to a real pen's line and choose your colour: black and blue cover nearly every official document. Too thin looks faint on paper; too thick looks like a marker.
3. Or type it instead. If your drawn signature never looks right on glass, type your name and scroll the signature fonts until one matches your style, then adjust its colour the same way.
4. Save and reuse. Save the signature and it is stored on your device as a transparent PNG. From then on, whenever a document, form or photo needs your signature, place the saved image on it — the whole job takes seconds, and the signature is identical every time.