Its interesting.

Would I buy this, no, probably not, and I am in your target market.

Does that mean no one will buy this? Well there are a lot of start ups out there, and its cheep as chips (one time cost) so someone is going to give you some money.

Do I think you can recover costs on building and then marketing this, maybe.

If this is a side project, and your doing this as something low key or for extra cash its probably going to keep you in beer at LEAST.

I have to ask, is it your intent to make this one part of a more robust offering for folks at the early stage? If it is going to be part of a "larger offering" then by all means you should pursue that. A basket of 10 tools would give you more appeal and make it easier to market.