This may be an unpopular opinion, but I would take a second look at what your limitations on capital actually are. Software development has this reputation of being extremely expensive, but my (limited) experience has shown that you can hire developers at very low costs if you are willing to do a few things.

1. You have to be willing to learn enough about coding to not be taken advantage of and to be able to communicate effectively with a developer. You want to do this anyways so that you can really know your product.

2. You have to be willing to look into the global market for developers. You might be surprised at the low cost you can find by exploring options in other countries.

3. You have to be flexible. The first developer I worked with was great....at least for the first 80% of the software. After that, I had to renegotiate how much he would be paid (ended up paying only 50%) and move on to a different developer to finish the software. This approach only worked because I understood the software and existing code well enough to forecast how much the completion would cost.

Feel free to give me a call. We can go over the financials and your background. You probably have more options than simply giving equity away.