A professionally designed mobile app icon for the App Type, built around one centered Symbol in the named Style. Use the Color Palette as a smooth two-tone gradient with a clean, flat glyph and one consistent light direction from above. Keep the symbol simple, bold and readable at 60 pixels, with generous padding inside the central 80 percent. Render the icon as a perfectly square 1:1 artwork filling each square edge to edge, with no rounded corners, device frame, outer border or external shadow. Present the Variant as three identical square icons side by side on a plain neutral presentation background: light, dark and tinted. Keep the symbol size and placement consistent across all three versions. No text, letters, sparkles, glow, lens flares, busy backgrounds, photographic detail, watermarks or resemblance to an existing app icon or logo.
Use these details:
App Type: "To-do list app"
Symbol: "Three stacked checklist lines"
Style: "Gradient"
Color Palette: "Royal blue gradient with a white glyph"
Variant: "Light, dark and tinted"
Using your own logo, product or face? Attach it in the chat and say which of the details it replaces.
Your result will come out close to the example rather than identical to it. Change the details to make it yours.
