Pull 5/3/1 or nSuns from a program database like LiftVault, import your coach's spreadsheet, or load a creator's template — Crucible turns any written program into a live, progress-tracked strength app built for serious lifters.
No ads. No selling your data. Works fully offline, with optional cloud backup.
Most trackers make you rebuild your program by hand, row by row. Whether it came from your coach, a template you bought, or an online database like LiftVault, Crucible is built around import — point it at an .xlsx or .csv, even a messy one, and it reads your days, exercises, sets, rep ranges and rest, then drops you into a clean review before anything is saved.
| Back Squat | 4×6-8 | RPE8 |
| RDL | 3×8 | 2 min |
| Leg Press | 3×12 | — |
| Rest day | — | — |
| Back Squat | 4 sets | 6–8 · RPE 8 |
| Romanian Deadlift | 3 sets | 8 · rest 2:00 |
| Leg Press | 3 sets | 12 |
| Rest day | recovery | on calendar |
It even reverses Excel's habit of turning “3×5” into a date, groups multi-week blocks, and creates any unknown exercises automatically.
Crucible doesn't care where your training came from — if it's written down, it can come in.
Pull a famous program — 5/3/1, nSuns, PHUL / PHAT, GZCLP, Reddit PPL — from free libraries like LiftVault, then import the spreadsheet.
The spreadsheet or PDF your coach or gym sends each block — imported in seconds, no retyping.
That program you bought from a lifter you follow. Load it once and track every session against it.
Crucible links out to free program libraries like LiftVault — grab a spreadsheet there, then import it here. We link only; we never rehost, bundle, or republish anyone's program content.
Bring any coach, creator or classic program (.xlsx / .csv) into Crucible with a review step before it saves.
Log effort per set, warm-ups, and last-set techniques — drop sets, rest-pause, myo-reps — plus per-set notes.
Automatic PR detection, an estimated-1RM trend, and “last time” recall so you always know what to beat.
Map your program onto actual dates. Start Day 1 on any weekday, pick up mid-program, drag to reorder days.
Ready-to-run classic programs so you can start without a spreadsheet — one tap to load.
Tabata, EMOM, rounds-for-time and run/walk intervals with a guided, audio-cued runner.
Works fully on-device — no account required. Optional cloud sync, no ads, no third-party trackers.
Own your history. Export your full training log any time — no lock-in.
Group movements, log duration-based work, and track bodyweight or loaded conditioning movements.
Crucible is genuinely usable for free — log workouts and run a program without paying. Pro unlocks the import wedge and the serious-lifter tools.
Excel (.xlsx / .xls) and CSV. Crucible detects your days, exercises, sets, rep ranges, RPE and rest — including messy, real-world spreadsheets from coaches, creators, and online program databases like LiftVault — and shows a review screen before saving anything.
Anywhere they're written down: your coach, a template you bought, or free online libraries like LiftVault, which host classics such as 5/3/1, nSuns, PHUL/PHAT, GZCLP and Reddit PPL as spreadsheets. Download one, then import the file into Crucible. (We link out to those libraries — we don't rehost their content.)
Yes. You can log workouts, run a program, and use the conditioning engine for free. Pro unlocks spreadsheet import, cloud sync, advanced analytics, unlimited programs, all-time history and CSV export.
Completely. Crucible is local-first — your data lives on your device and the app works with no account and no connection. Cloud sync is optional, for backup and using Crucible across devices.
Your training data is yours. No ads, no selling data, and no third-party analytics or trackers. You can export everything to CSV any time, and delete your account and synced data from inside the app.
Crucible is in the final stretch before its iOS launch. This page is a preview — check back soon for the App Store link.
Crucible is coming soon to iPhone. Bring your program. Make it live.
Crucible