Design a professionally crafted mobile app icon for the App Type, centered on the Symbol and following the Style. Each icon is a perfectly square 1:1 canvas filling the entire frame edge to edge, with no rounded corners, device frame, outer shadow or border. Use the Color Palette with a smooth two-tone gradient and a flat white glyph for the light version. Keep one strong, simple silhouette with generous padding inside the central 80 percent, readable at 60 pixels. Use one consistent light direction from above, with no text, letters, sparkles, glow, lens flare, busy detail or extra objects. Present the Variant as three identical square icons side by side on a plain neutral background, evenly spaced: light, dark with the glyph in color, and tinted with a monochrome grayscale glyph on dark. Keep the symbol, scale and placement identical across all three versions. Do not copy any existing app icon, logo or mascot. No watermarks.
Use these details:
App Type: "Stock investing app"
Symbol: "Simple upward line chart"
Style: "Gradient icon"
Color Palette: "Deep navy to midnight 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.
