I've been using iPads for years, initially for aviation and over time adding in photo editing, writing, and coding.
Today, I'm using an iPad Pro 11" that I picked up in early 2018, along with the Apple keyboard case and a pencil. The same model is now available (refurbished) on Amazon for just over $600.
This is an opinionated list that lays out how I've set up my iPad for every day use.
ForeFlight ($200/yr, discounts available). It's the obvious choice, in my opinion, with really good planning tools, enroute and approach chart support, and data layers. I've tried WingX and Garmin Pilot, and while both solve the same problems, ForeFlight's presentation and how they've combined features puts it at the front. There are plenty of other articles about why ForeFlight is great, so I'll stop here.
Adobe Lightroom CC ($10/mo, with 1TB storage plan). It gives me cloud storage for backups, solid editing tools that I'm comfortable with, and support for Fujifilm's X-Trans RAW files.
iA Writer ($5 iOS, $30 macOS) is my markdown editor of choice. Good shortcuts, full keyboard support, and it integrates perfectly with the iOS file system, allowing me to edit files in any storage location including
git repositories. I use iA for personal and work tasks -- it's what I use to draft articles for this site, and in my day-to-day work as an engineering manager. It's also got a very, very good macOS version, so there's very little cost to switching back and forth between platforms.
Working, including coding
Working Copy (free, $16 pro unlock) is a fantastic first-class git client, with native file system integration and some solid diff tools. It's also got a built-in preview web server that is pretty powerful for simple projects.
Blink Shell ($20) allows me to remote in to any machine, either using
mosh. I can connect to my work VPN and run builds, use
vim to edit files, and generally do about 95% of what I need as a front-end software developer. A large portion of Blink's utility is the result of a good
dotfiles configuration. I also regularly use Blink at home to connect to a Mac or a Raspberry Pi that I use for site development builds.
Inspect Browser ($7) puts a set of web developer tools back into Safari. Tap-to-inspect the DOM and CSS; JS console; network waterfalls; simulate devices for responsive testing; the list goes on.
Agenda (free, $10 to $25 pro unlock) is really useful for someone like me who needs a way to offload things from my brain. I use it to link meeting notes to calendar events, where I can then later search by attendees, or topic, and to create to-dos that are synced to Apple's native Reminders app.