Kind of going along with everyone else to a degree.
I have a marketing background, so i am not a programmer, but have done a great deal of research in this.
Yes, there are plenty of tools to create a mobile apps in a short amount of time.
However, you will notice that a great deal of the quality mobile apps that are on the market and are successful have been programmed from scratch, not using online using mobile app dev tools.
That said, do not let that hinder you from temporarily creating something for the time being. Having a MVP or a working prototype at the very least is better than nothing. However to agree with Mikko, you will have limited access to API's and the creativity and customization features are minimal.
However, this is a popular place for innovators, creators or even myself to get stuck at. You want a nice app, but finding a developer that likes your idea or not even that but are open to committing time and are willing to partner up for equity is almost next to impossible these days. Possible, but the odds are slim.
That said, start networking like hell and in the mean time use an online tool to create a MVP or working/visual prototype.
I just got back from Dreamforce in San Francisco and the adobe tools are amazing, i would suggest going that route, but they are pricy. However, they can push everything created into iOS and Android native.
Hope this helps.