i don’t really separate the apps from the companies.
I always recommend the ones that have been around a while. Schwab and TD Ameritrade (now both the same company... Charles Schwab) or eTrade (now owned by Morgan Stanley). Fidelity and Merrill Lynch (Bank of America) should be solid. Interactive Brokers has good interest rates for leveraging and what they pay on uninvested cash.
RobinHood and WeBull are the new kids on the block. I wouldn’t rely on them when markets get wonky. I just don’t trust them to not have massive screw ups.
Morgan-Stanley is a solid financial institution with a long track record. They will stand behind eTrade. It will be interesting to see how they combine their platforms. Morgan-Stanley’s is kind of primitive and clunky. They bought eTrade for their platform (and the customer list). Morgan-Stanley is focused on wealth management. Locally they have the high dollar clientele. MS will push their high fee products like annuities.
Schwab has a lot of very efficient ETFs and a local office on Parkside Drive.
5 Best Trading Platforms 2021 | StockBrokers.com