Stop forcing real periodization into a flat weekly grid.

Lifters who run real periodization and currently live in a spreadsheet. Powerlifters, hypertrophy-focused lifters, hybrid athletes, gymnastic-strength practitioners, anyone alternating a strength program with a mobility or sprint program. If you've ever opened a spreadsheet at the gym and squinted, this is for you.

Those apps model a program as a repeating weekly template. Real periodization is a tree — macrocycle, phases, mesocycles, microcycles, days. BlockLab is the first app to model that structure natively. Beyond the data model: 8-anchor Suggest engine that auto-prescribes for every exercise in any program, dual-anchor caps for hold-capacity bottlenecks, fatigue tracking that spans across multiple pinned programs, per-machine baselines, strength bands, multi-program pinning, granular fork, carryover for incomplete sessions. None of those exist in tracker apps.

Three-tier source priority. First: your recent logs for that exact exercise (max e1RM via Epley, last 30 days). Second: your saved per-machine baseline. Third: your anchor 1RM × the exercise's library ratio. Then a hold-capacity dual-anchor cap (e.g. goblet squat capped by your bench, farmer's carry capped by your row). Then within-session fatigue (3rd quad exercise today = -13%). Then cross-session recovery (quads hit yesterday at high intensity = -8%). Then plate-calc rounding to your inventory. Every number you see has a math trail.

Pin as many as you want. The fatigue model and recovery tracking work across ALL your pinned programs — if Program A loaded your legs yesterday and today's Program B has squats, the suggestion drops automatically. The system reads your set logs across the last 96h regardless of which program they came from.

Two paths handled. If you intentionally cut short because you felt unrecovered, the cross-session fatigue model auto-handles it — you logged less, your muscles register less fatigued, tomorrow's penalty shrinks. If you ran out of time, the End-of-Workout modal asks what to do with each unfinished exercise: carry over (queues for next session, expires 72h), or skip. Carryovers appear as a one-click banner on any future session.

Because every recommendation should be auditable. The Tuchscherer RPE chart, Epley/Brzycki 1RM formulas, detraining decay curves, strength bands, fatigue half-life ranges — these are all known science. We compute them; you see the math; you stay in control. We will never train a model on your data and tell you what to lift.

That's the primary use case. Day view is purpose-built for one-handed logging between sets. Rest timer keeps your screen alive with wake-lock and floats over the page in three sizes. Plate calc is one tap from any set. Exercise name input has autocomplete from 334 mapped exercises plus your own past customs. PWA — install to home screen for native-app-feel.

Pin multiple at once. Morning + evening splits, alternating-week splits, in-season + offseason — all work without unpinning anything. Each program tracks its own progression independently. Or use granular fork to copy a phase / week / day / single exercise from one program into another and build a custom hybrid.

Yes. Every program exports as versioned JSON. Full account export (all programs + logs CSV) is available in settings. GDPR-compliant.

14-day no-questions refund on your first subscription or lifetime purchase. After 14 days, no refunds — but you can cancel anytime and keep access until the billing period ends.