I use VS Code as my editor. It blows everything else out of the water with great performance, great user experience, and a community of limitless plugins to customize it to your every need. I mostly use Night Owl as my theme.
Todoist is a to-do app. It allows you to group to-dos into projects, set a date for when you're going to complete a to-do, set repeating to-dos and lots of other great features you want out of a to-do app.
Deckset allows you to write a presentation in markdown and it takes care of the design.
Boundary Supply Errant Pack It has a lot of great features. Special spots for your laptop, passport, notebooks and stuff. But there has been a few times I used it as a carry on and could have used more space.
Christian Apps + Resources
Read-Scripture is a well executed app for reading the Bible regularly.
Echo Is an app I use for keeping track of prayer requests. It has a "pray now" feature where you pick how long you'd like to pray for and it flips through things to pray for.
ESV bible app My personal choice for the bible on my phone or computer.