Over the last 9 months I've been learning Swift/SwiftUI and have been building a simple, well-designed (at least that's my goal) app for tracking your stock holdings. Ideal for casual investors that may use multiple brokers or already track their investments in a spreadsheet and want a better way to keep tabs on their holdings that's not some some clunky broker app/site.
I've been maintaining a thread of my progress on it on Twitter (Scroll up) https://twitter.com/Stammy/status/1346273355306037250
Have a few more things to build but here's my landing page for now: https://stocketa.com
Given the cost of market data APIs (and other services I use) this will likely be a monthly subscription product.