BoulderBuilder turns every logged send into a performance pyramid — per gym and across your whole career — so you can spot the gaps holding you back and train with intent.
Now available on the App Store.
From your first sign-in to logging a send, reviewing sessions and forecasting your next grade — here's the whole app.
A pyramid that's wide at the base and narrows to a point means a solid, well-rounded climber. Gaps and inversions show exactly where to put the work.
A horizontal tab strip gives every gym its own pyramid, plus a Career tab that aggregates everything onto the absolute V-scale.
Use an absolute V-scale or range/color tags like "Orange = V4–V5". Mixed systems combine cleanly via a representative V-value.
Record sends by how they went — Flash, Send, Project or Repeat — with attempts, date and notes. Projects render as a faint extension of each bar.
Tag each climb by terrain and movement — slab, overhang, crimps, dynos and more. Filter your pyramid by style and see exactly where you're strong and where to train.
A progression-over-time chart tracks your hardest grade month by month as you climb.
See where your grades are heading over the next six months, learned from your own history and worked out privately on your phone.
Climbing sessions save straight to Apple Health as workouts, so your training shows up alongside the rest of your activity.
BoulderBuilder learns the shape of your progress from your hardest grade each month — including the natural slowdown most climbers hit as they advance — and projects where you're headed.
Your complete private climbing log stays on your device. If you use Friends, the profile, climb details, photos and interactions you explicitly submit are stored by our online service. Shared content undergoes human safety review before others can see it. Friends uses Sign in with Apple; an optional Face ID / Touch ID lock protects access to the app on your device.
BoulderBuilder is now available on the App Store. Log your first send and watch your performance pyramid take shape — gym by gym, grade by grade.