Looking for logo for a mobile application

Seeking a distinctive logo for a mobile app named TapBillz with the slogan "Tap. Bill. Done." Color code is Blue something like #0065FB, Design should include a memorable icon featuring "TB" or "tb" text, optimized for app icons and scalable for marketing materials. Looking for modern, clean, and professional styles with options for color and monochrome versions, and delivery of vector and raster files. Provide a fixed price quote for initial concepts, revisions, and final assets.

Regards,
Karthik