EinstandFor iOS
Know what the rules
actually say.
Einstand explains tennis rules and club conventions the way they play out on court: concise and precise, with animated court diagrams instead of regulation prose. A session takes three to five minutes, and the whole thing works offline.
No in-app purchases · works offline
What's inside
Sixty scenarios
from real club play.
They cover the serve, scoring, doubles situations, rallies, tournament play and etiquette. Eight learning paths take you from the tiebreak through doubles formations to home-tournament etiquette, in portions of a few minutes each.
Every rule is cited to the ITF Rules of Tennis and the DTB Wettspielordnung. The app quotes the section, so you can go and verify it yourself.
Practice and look up
Walk through a doubles
rotation step by step.
The Doubles Lab is an interactive visualizer for serve rotation and formations, and it lets you work through real game situations one step at a time. When a term is missing, the glossary holds 80+ entries from A to Z, with search and context links into the scenarios. Pro-Moments tell the most interesting edge cases in the rules as short magazine stories.
What you won't get is confetti or a "LEVEL UP!" banner after every correct answer.
Privacy
There's no server
to know anything.
Einstand sends nothing anywhere. There is no account, no email and no login, and no ads or trackers are built in. The app only asks for a permission if you switch on the daily reminder, and that reminder is scheduled on your device. What you learn stays on your iPhone.
Get Einstand.
German and English are both included, and you switch the app language in iOS Settings. Nothing in here needs a connection.