Actually, "Maybe I('ve) got to wash the apples before I eat them". Which is the same as "Maybe I (have) got to wash the apples before I eat them". We usually just say "I've got to" or, more informally, I've gotta

gotta = got + to

"I've got to wash" = "I have to wash" but the second one is more informal.

All these differ somehow:

-I should wash. (I have to do it, but it is not as important) "I should go to sleep, but I want to see the last episode.

-I must wash. (Biggest importance) "I must study for the test"

-I have to wash/I've got to wash. (It express lower importance than "must" but more than "should")

-I'd better wash. (I'd = I + had. It implies negative consequences) "I'd better wash the apples, or I can get sick" 

So far ...

- Not having the option of just sending a notification when there is a diffence of 30 mins / 1 hour with the last message.

- Not having a mobile app.