You probably shouldn't have told your company about this product. You came up with the idea, and implemented it, yes but in the company's eyes, you did it under

You probably shouldn't have told your company about this product. You came up with the idea, and implemented it, yes but in the company's eyes, you did it under their watch, time, and salary (even if it's partially true). Basically, they're going to keep all the profits if this succeeds, and you're just going to be in the same position, as lead dev supporting it. Good to put in a resume, but not potentially life changing.