While this is a crowded space filled with personal tracking apps, I quite like the approach you're taking. Open source enables me to completely trust the app.

While this is a crowded space filled with personal tracking apps, I quite like the approach you're taking. Open source enables me to completely trust the app. My personal favorite app for this use case is Hey Day (http://www.hey.co/ http://www.hey.co/) – it has superior design and pulls in all of my photos. Even though Hey Day has a privacy option that doesn't save any data in the cloud (entirely on my phone), I'm always a bit concerned about what is shared and what may get leaked. The easiest way to prove the privacy controls of your app is with open source, so if you could improve the design & functionality of this app, it might be a worthy competitor in the space.