The Crucible

Forge
yourself.

Built for lifters who design their own programs. Workouts, nutrition, body composition — one app instead of four tabs.

Start 30-day free trial → See what's inside
No credit card 127+ exercises AI-powered
5
AIs in one app
30 days
Free, no card
30 days
Refund window
$200
Lifetime tier
What's inside

Built for the lifter,
not the algorithm.

I built this because I was tired of running my own programs through a Google Sheet, copying numbers into MyFitnessPal, and squinting at InBody printouts. So I made one tool that does the whole job.

Build it your way

Designed for lifters who run their own programs. Build any workout from scratch, swap exercises mid-set, run supersets, freestyle the day. Or let the AI start you off.

  • Build custom plans, save your own templates
  • Swap any exercise, anytime
  • Freestyle workouts — save them as plans
  • AI plan generator if you want a starting point

Track everything

Sets, reps, weights, PRs. Macros and micros. Body composition. Photos over time. The numbers your spreadsheet was tracking — auto-calculated and charted, no formulas to maintain.

  • Auto-PR detection — no formula tracking
  • Workout calendar + volume trends
  • Macros, micros, body composition
  • Photo progress with side-by-side comparison

Stop juggling apps

Spreadsheet for lifts. MyFitnessPal for macros. InBody printouts for body comp. A notes app for everything else. The Crucible replaces all of it — and adds the stuff you weren't tracking yet.

  • One place for lifts, food, and body composition
  • AI photo food logger (no manual entry)
  • Built-in contest-prep mode if you go that direction
  • PR share cards that look like actual fitness content
Workouts

Log every set.
Auto-detect every PR.

Build any plan from scratch. Swap exercises, run supersets, freestyle the day. When you beat a PR, you'll know — auto-detected from your set with a celebration moment and a shareable card.

  • Custom plans + freestyle mode
  • Auto-PR detection with share card
  • Workout calendar + volume trends
9:41
●●● ▢
Log Workout
Chest & Triceps — Wed
Bench Press
PR 225
Set 18 × 185✓
Set 26 × 205✓
Set 33 × 230★ NEW PR
Incline Dumbbell
Set 110 × 60
Nutrition

Macros, micros,
and a phone-photo logger.

Snap your plate, get back the calories, macros, fiber, sodium, and micronutrients. Or scan a barcode. Or import a recipe with AI. Whatever's fastest at the moment.

  • AI photo food logger
  • Barcode scanner + USDA database
  • Macros + micros + fiber + sodium
9:41
●●● ▢
Nutrition
Today · Friday
142g
Protein
180g
Carbs
52g
Fat
📷
Chicken + rice bowl
540 kcal · 45p · 60c · 12f
AI
🥗
Greek yogurt + berries
220 kcal · 18p · 28c · 2f
Shareable

Hit a PR? Card auto-generates.

Every PR triggers a 1080×1080 share card built with the exercise, weight, and your delta over your previous best. One tap to the native share sheet. No editing required.

  • Auto-generated 1080×1080 PNG
  • Web Share API on mobile
  • Branded card you didn't have to design
9:41
●●● ▢
Personal Record
NEW
PR
Bench Press
230 lbs
+5 lbs over previous best
Share
Continue
For every athlete

Not just for lifters.

Sport Training mode is built in — with position-specific work, focus-area targeting, and age-aware guidance for younger athletes. Coaches and parents: it's a real training tool your kid can use safely.

Real sport-specific plans

Not generic "athlete workouts." Five sports — basketball, football, soccer, baseball/softball, wrestling — each with 8–10 chosen movements and 2–3 conditioning protocols. Every exercise explains why it matters for that sport.

Position + focus targeting

Baseball goes deep. Pick your positions — pitcher, catcher, infield, outfield, hitter — and what you want to improve: bat speed, arm strength, sprint speed, first-step, total-body power, or injury prevention. Get movements chosen for those exact demands.

Safe for young athletes

Every movement carries a Young Athlete Note — how to scale it, what to skip until they have the base, and where the priority is at their age.

Young Athlete NoteStart with hang cleans using a PVC pipe or empty bar to learn the movement pattern. Form first — always.
Sports supported
Basketball Football Soccer Baseball / Softball Wrestling + In-season / Off-season phases
vs. the rest

One subscription. Whole job.

Most workout apps don't track food. Most nutrition apps don't track lifts. If you're running both plus a spreadsheet, you're paying twice and copying numbers between four tabs.

Feature
The Crucible
Others
Workout logging
✓
Some
Macro + micro nutrition
✓
Some
AI plan generator
✓
—
AI photo food logger
✓
Basic
Contest prep mode
✓
—
Reads InBody / DEXA reports
✓
—
PR share cards
✓
—
All-in-one (lifts + nutrition + body comp)
✓
—
Lifetime pricing
$200
—
Pricing

Try it free. Decide later.

30 days, no card. Cancel any time. The lifetime tier is the one we'd buy.

Monthly
$12
/month
Cancel anytime. No commitment.
Start trial
30-day refund
Best Value
Annual
$100
/year
Save $44/yr vs monthly. Pause anytime.
Start trial
30-day refund
★ Most popular ★
Lifetime
$200
one-time
Pay once. Use forever. Sleep at night.
Buy lifetime
30-day refund
Stripe secured
Cancel in one tap
30-day money back
Questions

Things people ask.

I built it for myself first. I spent years running my own programs through a Google Sheet — reps, weights, manual calculations — and adding macros from MyFitnessPal, body comp from InBody scans, photos in a notes app. My system kept falling apart. So I made one tool that handles the whole job. Everything else I've added since to make it stand out, but the core is "the tracker I wished existed."
Yes. 30 days. No credit card required. Sign up with email and you're in. You'll only see the pricing screen if you choose to upgrade.
Full refund within 30 days of any subscription or lifetime purchase, no questions asked. Cancel from Settings → Subscription in one tap; email support@thecruciblefitnesstracker.com for refund. Checkout itself runs on Stripe — we never see or store your card.
Any device with a modern browser. The Crucible is a Progressive Web App — iPhone, Android, iPad, tablet, laptop, desktop. On phones: open in your browser and tap Add to Home Screen (Share → Add to Home Screen on iOS, menu → Install app on Android). It then runs like a native app: full-screen, offline-aware, no App Store required. The web-first approach is also why the lifetime tier is possible — no 30% platform cut to Apple or Google.
Sets are written locally first and queued to sync when you reconnect. Your workout will never disappear because the basement gym's WiFi gave out.
Not yet — importers are on the roadmap. Today, you build your plans and recipes once in a 5-minute wizard and you're set up faster than either competitor's onboarding.
Yes, if you ever go that direction. There's a dedicated mode with peak-week protocols, sodium/water guidance, photo-week scheduling, InBody / DEXA scan logging, and show countdown. Not the headline of the app — just there if you need it.
No. No ads, no data sales, no third-party tracking pixels. Your subscription is the only thing we monetize. Storage is encrypted at rest in Supabase; auth is encrypted in transit.

Stop juggling tabs.
Start lifting.

One app for the whole job. Free for two weeks. No card.

Start 30-day free trial →