Kruin

Every session, board send, and finger workout in one native app — with AI training analysis and WHOOP recovery built in. Your data, offline and yours forever.

Built for climbers who train like athletes.

Kruin is your entire climbing life in one native app — every session, every board send, every finger workout, every rehab note — logged, searchable, and yours forever. This is the full native Kruin experience: fast, offline-first, and built for the phone in your chalk bag.

TRACK EVERYTHING Climbing sessions, board sends, finger training, gym work, cardio, rehab. Nine-plus session types, all in one place. Log at the gym, on the wall, or on the couch — the app works fully offline and syncs when you're back online. A complete copy of your training lives right on your phone.

SEE PATTERNS AI-powered weekly summaries and 90-day cycle analysis that actually understand climbing. Know not just what you did, but whether it's working. Personal records, grade progression, finger-strength trends, and injury history — the longer you train on Kruin, the smarter your data gets.

RECOVERY THAT MATTERS Connect WHOOP and see your recovery, sleep, and strain right alongside your climbing. Your training analysis factors in how recovered you actually are — because a hard session on a red-recovery day isn't the same as one on green.

BRING YOUR BOARDS Import your sends from Crux and Tension Board straight into your log. Your spray-wall and board climbing counts as training too — and it all lives in the same history.

TRAIN WITH YOUR COACH Link with your coach and work from the same picture. They see your real training data; you get their programmes and notes. No more scattered text-message updates.

YOUR DATA, FOREVER Export everything in one tap as an open, documented file — no account required to read it. We've never deleted a user's data without their request, and we never will.

Kruin is a focused tool for climbers who are serious about getting stronger. No ads. No tracking. No selling your data. Just your training, understood.

Athlete Pro subscription unlocks AI training analysis, WHOOP integration, and media upload. A free web tier is available at kruin.app.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://kruin.app/privacy