Competitors: No, I've seen competitors come and go.
There are some competitors, but they target a broader audience (and have to because of VC money) and thus, their product is less focused on sophisticated users. What would you rather buy, a general purpose app that does many things half-assed or the specialized version that is exactly what you need? I can say that my app is simply the best in its category and there are way too many small details so that a copy-cat can't get everything right. Furthermore, in that niche, most people know my app, which helps.
Future technology changes: Not really. They will probably take a long time to replace the domain I'm in. However, there could be a black swan kind of thing, something nobody expects ;) But I don't really stress myself about this.
I have no daily anxiety, but there's one thing on my mind: The app space will get more regulated in the near future. GDPR was one thing. ePrivacy is coming. More privacy laws, upload filters and whatnot. The entire health and fitness market WILL get more regulated. So far, you can claim whatever health benefits you want with your app. Expect that you might need some kind of light FDA-approval (or the European equivalent) in the coming years if your app claims things. On the one hand, this is a big annoyance, on the other hand, I am in a good position and make already enough money to build up cash reserves to handle regulatory affairs if they happen to affect my app.
There are some competitors, but they target a broader audience (and have to because of VC money) and thus, their product is less focused on sophisticated users. What would you rather buy, a general purpose app that does many things half-assed or the specialized version that is exactly what you need? I can say that my app is simply the best in its category and there are way too many small details so that a copy-cat can't get everything right. Furthermore, in that niche, most people know my app, which helps.
Future technology changes: Not really. They will probably take a long time to replace the domain I'm in. However, there could be a black swan kind of thing, something nobody expects ;) But I don't really stress myself about this.
I have no daily anxiety, but there's one thing on my mind: The app space will get more regulated in the near future. GDPR was one thing. ePrivacy is coming. More privacy laws, upload filters and whatnot. The entire health and fitness market WILL get more regulated. So far, you can claim whatever health benefits you want with your app. Expect that you might need some kind of light FDA-approval (or the European equivalent) in the coming years if your app claims things. On the one hand, this is a big annoyance, on the other hand, I am in a good position and make already enough money to build up cash reserves to handle regulatory affairs if they happen to affect my app.