Subscriptions provide developers with a more reliable and consistent revenue stream than one-time sales or ad-based income. This can be especially helpful for the app's long-term growth and srummy best appustainability. That being said, in order to keep users interested and draw in new ones, developers must constantly provide value to their subscribers and update and enhance the app. By providing subscribers with early access to new features, exclusive content, or other benefits, developers can build a devoted & engaged user base that is prepared to pay for continuous app access.