Which would probably be weird anyway

Manual control: This is the most basic form of control. You have to manually move the vibrator yourself, which can be fun if you're into that sort of thing, but it's not as exciting as having an app do it for you!App control: The app sends signals to your device via Bluetooth or Wi-Fi (like Apple's HealthKit), allowing you to remotely change settings and patterns without having to touch anything at all. Rose clit sucker can also do that. This is great for solo sex because there's no risk of getting your partner's hands messy--and if they are really into watching porn while they masturbate? Well then more power to 'em!Remote control: A remote lets someone else control what happens on their own phone or computer without needing access directly into yours...which would probably be weird anyway since we all know how personal our phones are these days!