Einstand – Tennis Rules

Many people play tennis. Far fewer truly understand the rules.

Einstand explains tennis rules and club conventions the way they actually play out on court: concise, precise, with animated court diagrams instead of regulation prose. In 3–5 minute sessions. In German and English. Fully offline.

WHAT'S INSIDE

• 60 scenarios from real club play — serve, scoring, doubles situations, rallies, tournament play, etiquette
• 8 learning paths — from the tiebreak to doubles formations to home-tournament etiquette
• Pro-Moments — short magazine stories about the most interesting edge cases in the rules
• Glossary with 80+ terms, A–Z, with search and context links into the scenarios
• Doubles Lab — interactive visualizer for serve rotation and formations, walk through real game situations step by step

WHAT EINSTAND DOESN'T DO

• No ads. No trackers. No data sent to any server.
• No account, no email, no login. Everything stays local on your iPhone.
• No confetti, no "LEVEL UP!" banners, no streak-shaming.
• No in-app purchases. One-time purchase or free, depending on launch pricing.

WHO IT'S FOR

• Club players who've been playing for years but still guess at "serving position on deuce in doubles"
• Returning players and ambitious beginners
• Coaches and team captains who want a reliable reference for their teams
• Anyone who wants to settle a court-side rules debate, once and for all

SOURCES AND TRUST

Every rule cited to the ITF Rules of Tennis and DTB Wettspielordnung. We quote the section — you can verify.

LANGUAGES

German and English. Switch app language via iOS Settings.

PRIVACY

We collect nothing. We send nothing. There's no server to know anything.

Built for club players. Built for clarity.