Bouldering log · v0–v17

Your next project
is already on the wall.

Chalk logs every attempt, builds your grade pyramid automatically, and tells you exactly what to try next — at 400+ gyms and counting.

Overhang RoofThe Cliffs · Bay 3
V6
1 2 3 4 5 6 7 start, matched crimp heel hook bump big move match top out
48,300+
problems logged this month
V0–V17
full grade range tracked
412
gyms connected worldwide
6.2k
sessions synced with crews weekly
The app

Everything between chalk up and top out.

No spreadsheets, no memory games. Chalk keeps the log so you can keep climbing.

Log every attempt

Tap once to mark a flash, a send, or another lap on your project. Chalk keeps the tally so you don't have to.

flash · send · project

Grade pyramid

Watch your pyramid build itself with every send. See exactly where the base needs work before you push the top.

v0 → v17

Crew sessions

See who's climbing tonight and where. Spot each other's projects, trade beta, and stop showing up solo.

live at your gym
Margin notes

Beta from climbers who log with Chalk.

"Stopped losing track of what I'd flashed versus what I was still working. My log finally matches my memory."

@ondrahangs · Fontainebleau, FR V7 max

"The pyramid told me I was skipping my base grade entirely. Filled it in, sent my first V8 six weeks later."

mateo.v6 · Joshua Tree, US V8 max

"Crew sessions replaced our entire group chat. We just look at who's on the wall and go."

priya.sends · Bishop, US V5 max
Connected gyms

Find your wall.

View all 412 gyms
GymWall typeSetting cycleOnline now
Brooklyn Boulders
Gowanus, NY
bouldering every 5 weeks 312 →
The Cliffs
LIC, NY
board + lead every 6 weeks 289 →
Movement
Denver, CO
bouldering every 4 weeks 401 →
Sender One
Los Angeles, CA
board + lead every 5 weeks 247 →
Blochaus
Bristol, UK
bouldering every 6 weeks 168 →
Free to start

Your project is waiting.

Log your first send in under a minute. No credit card, no spreadsheet, no losing track.