The issue is letting your brand be accessible on some third party's (often) sub par app/platform, where you don't get access to data (often) and have little to

The issue is letting your brand be accessible on some third party's (often) sub par app/platform, where you don't get access to data (often) and have little to no control on the UX. The tradeoff is app fatigue and a cluttered app store. It's hard to remember what app does what and many sit on your device rarely used since they become forgotten.