Balsamiq is for designing low fidelity mockups (wireframes) whereas jMockups is for designing high fidelity (pixel perfect) mockups. It makes more sense to compare jMockups to Photoshop than Balsamiq.
That being said, I can pretty effortlessly pivot from focusing on high fidelity to low fidelity. Right now I'm considering adding a toggle button that lets you switch back and forth, but am not sure if I want to go down that path yet. Do one thing well, right?
I've played with jMockups demo and as a Balsamiq user I can say that one of its best features is "low fidelity", specifically lines that look hand drawn and comic sans font. That combo is what I consider most important in mockups: when you give that to a client, it's very clear that it's not a product, it's a mockup.
If you can make that kind of low fidelity, I think you would have very good mockup tool. Of course, seeing what you have right now, I can understand your thinking in pursuing high fidelity route.
I meant to say I agree with you saying doing one thing well might be a better choice for your product.
I liked what I saw in jMockups, I like how it works, and it's pretty fast. But I wouldn't use it as a tool to create mockups that I have to present to a client (that doesn't mean somebody else has the same kinds of clients or same needs as me), for the reasons it looks too real. Like I said, Balsamiq's greatest feature is that mockups look "hand drawn", what you called "low fidelity", one might call it almost childish.
You said jMockups and Balsamiq are less comparable than jMockups and Photoshop. I agree. So maybe you shouldn't pivot from focusing on high fidelity to low fidelity but excel in what you already do.
Very clear explanation, and agreed on doing one thing well. It'll be a lot easier to to leadership in the high-fidelity mockup segment, and then use that as a base to expand if it makes business sense.
That being said, I can pretty effortlessly pivot from focusing on high fidelity to low fidelity. Right now I'm considering adding a toggle button that lets you switch back and forth, but am not sure if I want to go down that path yet. Do one thing well, right?