giving this answer without having found your personal website. (The name of your startup appears besides your own name everywhere online)
In general, you own an amount of mobile applications and now what?
First of all, I understand the need to present them somewhere, at your own online space to clarify the ownership and that this should be added to one more thing you have done in your life. If this was the only reason for displaying them, then just putting them all together in a list or any other similar format then why bother making it more complex?
However, if you have a specific audience in your mind and for what reasons this audience is visiting your personal website then you might consider alternative designs.
For example, if you own an awesome mobile application that would be interesting to your audience why not put it in a large section that covers the entire available width and have the rest underneath to occupy a much smaller screen real estate each. Other ideas could be valid always depending on the audience. So more information on whom you optimize for, would be necessary to elaborate.
Now if you don't have time for doing major changes and you are only concerned with the choice of the link then I would go with the App Store link because the user probably already knows what to expect, where to find the information that he is looking for etc. Unless the website for this mobile application tends to load faster and provides the most important information above the fold.