Based on the apps I have on my phone and my experience with those apps, I suggest you the following apps: Slack, Wunderlist, Dropbox. These apps can help you with the power of cloud. You can integrate your Wunderlist and Dropbox into your Slack for maximum productivity. Also, look for Mindly, or similar apps, to organize your goals, with a mind map. Other apps that you can make your work easier are Word, Excel, PowerPoint, IFTT(to automate your tasks). Finally, you should have a keyboard that allows you to write faster. Even the most small things can maximize your productivity. These are the most important important apps, if you need some help with Dropbox and other apps integration into Slack or other questions, you can also call me.