As a first time tech entrepreneur, I was confused if I should select one tool for mobile prototyping and other tools for implementation. I wanted to deliver my mobile app service as soon possible but I don't want to make mistakes when selecting tools. I have seen tools like Appcelerator, https://codiqa.com/ and PhoneGapp. Other than that should I also develop for android and iPhone separately, or should I use one of the above tools to develop once and deploy in different devices? Time and money is also a constraint for my startup. Please advice me. Thanks.
It depends on the type of startup and current stage of your startup. I would advise to start with tools like Appcelerator and PhoneGap and deploy on both platforms for validation. (I'm assuming you've already done some level of customer development and validation before thinking of building a mobile prototype) Depending on your app, and what your learn from the use of the app by your customers, you may find it necessary to eventually invest in a native app.