I was chatting with a friend last year who runs his own informational and subscription site and he was finding it more difficult to win traffic through the search engines. His referrals were dropping away as his site rank slowly went from top positions and more often than not dipping to page two.
As we were chatting I looked at his business with fresh eyes and there was this "bingo" moment. He was so close to the business that he didn't realise his site is perfect for an app.
At the end of our chat he was away and running, and what surprised me was how soon he reacted and created an app.
He's now very happy that his subscriber base is growing, albeit slowly, and he doesn't need to agonise over search engine rankings.
Apps are not for everyone, just the same as search engines, social media, etc. The moral of the story is: look at your site from an outsider's point of view.
Good luck in 2021!