German phrase
Ich erzähle es dir später.
Meaning
I'll tell you about it later
When to use it
It means you will tell later. Use it when you plan to share information after some time.
Example dialogue
Kannst du mir schon von der Überraschung erzählen?
Can you tell me about the surprise already?
Ich erzähle es dir später.
I'll tell you about it later.