One number can't tell you what to fix. CubeBloom splits every solve into phases, shows where the time goes, and coaches you from your own history.
Built on phase data
Every solve split into cross, F2L, OLL and PLL — so you know which one costs you.
Powered by AI
A coach that has read your splits. Ask what to work on and the answer is about you, not cubers in general.
Designed for practice
Time, analyse and drill in one tab. Every solve feeds the analysis instead of sitting in a list.
Record, upload, or connect a smart cube. Every phase gets measured against what it should cost at your speed.
Analyze
Upload or record a solve. It comes back cut into cross, F2L, OLL and PLL.
Drills
The full library, grouped by what it trains. Plus a spaced-repetition trainer over every alg set.
Timer
Space-hold arming, WCA inspection, +2 handling, and rolling ao5 / ao12 / ao100.
Drill down
Click any phase to see the solves behind the average, move by move.
Targets
Set a goal time and every phase gets its own target.
Every event
3x3, One-Handed, 2x2, 4x4 and Megaminx. CFOP, Roux and ZZ tracked separately.
Import a csTimer history, connect a GAN Bluetooth cube, run a StackMat, and let Claude read the splits that come out. Your existing gear is the setup.
csTimer
ClaudecsTimer, GAN, Speed Stacks and Claude are their owners' trademarks, shown to name the hardware and services CubeBloom works with. Nothing here is an affiliation or an endorsement.
Every timer told me my average. None could tell me which part of the solve was costing it — so I drilled algorithms when my real problem was pausing four times a solve.
Good coaching fixes that, and most beginners cannot get it. CubeBloom is the next best thing: measure every phase, say where the time goes, and name the one drill worth doing next.
Illustrative, not real customers — the app does not take payment yet.
CubeBloom showed me my cross was fine and my F2L was eating six whole seconds. Two weeks of the drills it built and I finally broke sub-15.
Briana PattonSub-15 solverThe AI insights read like a real coach. It spotted that my PLL recognition pause was my biggest leak — something I'd never have found on my own.
Saman MalikClub coachIt's coaching, not just timing — that's the difference. Every session now moves my average down on purpose instead of just logging times.
Hassan AliReturning cuberEvery phase of your method, plus the habits that fix lookahead and plateaus. Sourced from J Perm and standard community methods, with the links beside them.
Grouped by phase
The reps for what you are working on are always in the same place.
Progress carries over
Ticked drills follow you across sessions and devices.
Smart cube support
Connect a GAN bluetooth cube and every phase boundary comes from real turn data.
Import csTimer
Your existing solves count from day one.
Algorithm trainer
Spaced repetition over every set for your puzzle.
Per-phase deviation
A slow cross on a 30s solve isn't flagged.
One history
Timer, imports, video and smart cube in one place.
Not generic tips. It answers from your splits, your algorithm progress and every solve you have logged.
Answers you can trust
Grounded in your measured splits, not other cubers' averages.
A plan, not a platitude
Turn any answer into a drill set you can tick off.
It remembers
Every conversation starts with your history loaded.