PlateMath

open_in_new TRY AT: platemath.mrdlads.com

PlateMath is a mobile-first strength training log and barbell calculator designed for fast gym-floor operation. It replaces complex menus with rapid input methods—such as a plain-text pad format that lets you create and log new exercises instantly—and an interactive visual timeline that automatically organizes your training into macro, meso, and micro cycles alongside fatigue analytics.

Fast Input & Set Logging

Custom Keypad: Dedicated number pad designed for one-thumb gym operation, allowing direct entry of weight, reps, RIR (reps in reserve — repetitions remaining before muscular failure, from 0 to 4), and performance ratings (1 to 5).
Quick Unit Switching: Instantly toggle input units between pounds (LBS), kilograms (KG), and percentage mode (%) which automatically calculates working weights directly from your active personal records.
Set Utilities: One-tap repeat button to copy weights, reps, and ratings from previous sets, inline steppers (+/-) for quick weight and rep nudges, and set reordering arrows.
Warmup Builder: Automatically generates progressive warmup sets from your target working weight. Supports Straight, Ramp, and Pyramid rep structures with customizable percentage jumps and volume multipliers.

Plain-Text Syntax & Pad Editor

Session-Locked Pad: Full plain-text editor for the active workout date. Write or paste a workout in seconds with automatic syntax parsing.
On-the-Fly Exercise Creation: Type any new movement and modifier combination (e.g., Incline DB Press Pause) directly into the pad without navigating setup screens; PlateMath dynamically parses, creates, and registers the movement, modifiers, and exercise in your catalog automatically.
Automatic Cycle Generation: Define periodization structure using hash headers (#### Macrocycle / Program, ### Mesocycle / Block, ## Microcycle / Week, # Daily Session). The engine automatically computes and increments sequential running counters (P/M/W/D such as 1/2/3/4) across your training history.
Multi-Day BulkPad: Batch import tool in settings that validates and imports multi-week or multi-month training histories with a pre-commit review diff.
Structured Headers: Track program hierarchy, calendar dates, bodyweight, body fat percentage, diet phase, and fatigue ratings on a single header line (e.g., #### (Program) 2025-02-15 (@85kg 15% 2203) Notes).
Shorthand Set Formatting:
- Single sets with units or percentages (e.g., 100kgx5, 80%x3).
- Set multipliers to expand repeated work quickly (e.g., 135x5x10 for 10 sets of 5).
- Comma-separated rep clusters at a single weight (e.g., 405x8,8,6@1$4).
- System modifiers for automatic calculation adjustments: /bw (bodyweight tracking), /d (double volume), /h (half volume), and /t (timed isometric holds scaled at 6 seconds per effective rep).

Visual Timeline & Plate Math

Barbell Loading Visualizer: Immediate visual breakdown of barbell sleeve loading for Olympic bars, collars, and metric or imperial plate inventories.
Cycle-Aware Timeline Structure: The timeline groups training sessions by program and cycle, displays program titles at macro boundaries, and renders vertical cycle dividers across historical progression charts for clear block-by-block visual analysis.
Dual Timeline Modes:
- Log View (LG): Text-focused chronological log displaying detailed exercise groups, sets, loads, and ratings.
- Chart View (CH): Visual timeline where exercises render as proportional blocks. Block width represents total training volume; block fill height represents training stress and fatigue intensity.
Timeline Format Controls:
- Weight Display: Cycle timeline sets between absolute weight (WxR), percentage of 1RM (%xR), and plate count breakdown (PxR).
- Name Display: Toggle between full exercise names (FN) and compact abbreviations (AB) to maximize screen economy on mobile devices.

Diagnostic Visualizations & Fatigue Analytics

Pattern Viewer (Volume Matrix): Visual grid displaying set-and-rep structures across muscle groups over time. Uses dedicated icons for rep-schemes (straight sets, pyramids, ladders, burnouts, top set + backoffs, high density) color-coded by intensity (PMI / INOL) to diagnose training habits, fatigue spikes, and muscle distribution.
Rolling Fatigue & Trend Baselines: Configurable multi-week rolling standard deviation bands (4, 8, 12, or 16 weeks) that smooth day-to-day noise, highlight systemic deload gaps (periods over 7 days with no work exceeding 50% intensity), and display rolling baseline deltas.
Range-Band Bullet Charts: Interactive chart tooltips feature inline bullet charts that map the current lift against rolling low, median, and high standard deviation thresholds to diagnose whether performance is surging or dropping.

Dual Summary Modes: Displays total daily session metrics (reps, volume, sets, and muscle group distribution) or isolates historical progression for a single exercise or movement family.
Seven Core Metrics:
- s1RM: Highest estimated one-rep max achieved within the session.
- Intensity: Average load expressed as a percentage of your True Reference 1RM.
- Effort: Average difficulty expressed as a percentage of your historical best estimated 1RM.
- Sets and Reps: Total completed set count and rep volume.
- Volume: Cumulative weight lifted, scaled to thousands.
- PMI: PlateMath INOL (Intensity Number Of Lifts — an index measuring cardiovascular and neuromuscular lifting stress, scaled by 10).
Metric Modifiers (Superscripts):
- Session Deltas: Displays session-over-session changes compared to the prior workout, color-coded for positive and negative progression.
- Daily Dose: Displays frequency-normalized accumulation rates (sets/day, reps/day, volume/day, and PMI/day) divided across the days elapsed between training sessions.

Movement Management & Fractional Volume Counting

Base Movements & Modifiers: Organize exercises under foundational movement patterns (e.g., Squat, Bench Press, Deadlift) and customize them with mechanical modifiers (grip, stance, equipment, tempo).
Fractional Volume Counting: Base movements credit a full set (+1.0) to primary muscle targets. Modifiers apply mechanical bias (+0.5 sets for disadvantage variations that increase muscular loading, -0.5 sets for advantage variations) to split volume accurately across secondary muscle groups.
Compound & Isolation Filtering: Separate systemic compound stress from localized single-joint exercises.

Personal Records, Training Eras, & Strength Scoring

Multi-Rep PR Tracking: Comprehensive personal record tables tracking performed and estimated records across 1 to 20+ reps, with faded imputed values indicating projected capacity.
Era-Scoped PRs: Define time-bound training eras (such as changing weight classes, recovering from an injury, or starting a new training philosophy) to reset and track clean baseline records without losing historical all-time lifetime PRs.
Six 1RM Estimation Models: Selectable estimation formulas (Epley, Brzycki, Lombardi, Mayhew, O’Conner, Wathan) with user-configurable rep-cap ceilings to prevent overestimation on high-rep sets.
Relative Strength Scoring: Built-in DOTS scoring (a normalized coefficient that evaluates lifting performance relative to bodyweight and gender) with bodyweight multipliers.
Direct Timeline Navigation: Long-press any personal record in the table to jump directly to that date on the timeline.

Offline Reliability & Cloud Backup

Fully Offline Operation: All workouts, exercises, and personal records persist locally on the device with zero network latency.
Encrypted Cloud Sync: One-tap encrypted backup and restore ensures cross-device access without lock-in or mandatory server dependencies.