Forge Trainer

Forge is a strength training, nutrition, and body composition tracker built for people who want to log their training without paying a monthly fee, signing up for an account, or handing their data to a server.

Everything you log lives in a local database on your phone. There is no cloud. There is no sync. There are no ads, no analytics, and nothing to subscribe to.

TRAINING Build your own split — any number of training days, any focus labels, any exercises from a searchable library (or roll your own). Every set you log lives next to a "Beat this" card showing your best from the last session, plus a sparkline of your history for that lift.

• Tap a set complete and the rest timer auto-starts (1, 3, 5 or custom min presets) • Drop sets, supersets, and bodyweight sets are first-class — drop sets log primary and drop in one row, supersets link two exercises with tap-to-jump • Catch-up queue surfaces missed sets from earlier in the week with age indicators so you know what to make up • Live weekly muscle-volume grid shows working sets per muscle group — spot the undertrained area before the week ends • Color-coded weekly split strip — tap any day to open that day's workout

NUTRITION Forge derives your daily calorie and macro targets from your own body composition, not from "average male" estimates.

• Katch-McArdle BMR when body fat % is logged (the most accurate formula for lifters); Mifflin-St Jeor as a fallback • Phase switcher: Cut −10% kcal · Maintain ±0 · Bulk +10% kcal. Flip the toggle and all four macros recalculate • Barcode scanner — camera-based food lookup via Open Food Facts, no account or subscription required • Built-in macro calculator scales per-serving values to whatever portion you actually ate • Daily macro rings on Home, full 14-day trend charts in the Food log • Quick-add chips for recently logged foods; swipe to delete any entry

MEASUREMENTS Most fitness apps stop at the bathroom-scale weight. Forge tracks the metrics that actually change.

• Weight, body fat %, and lean mass (auto-derived from weight × (1 − bf/100)) • Circumferences: shoulders, waist, arms (flexed), chest, quads • Week-over-week deltas on every stat so you can tell whether the work is working • Goal progress bars for target weight and body fat — bar turns green when you hit it • 8-week trend charts for weight and body fat • Optional shoulder-to-waist ratio card with a 1.618 target

APPLE HEALTH (OPTIONAL, READ-ONLY) Finish a session and Forge pulls duration, average heart rate, and active calories from the workout your Apple Watch already recorded. Read-only — Forge never writes back to Health, and only reads when you tap "Finish."

ONE-TAP CSV EXPORT When you want your data, it's right there. One tap exports three plain CSV files — measurements, food log, and full set history — to the iOS share sheet. Open them in Numbers, send them to your coach, archive them on your laptop. They're yours.

WHAT FORGE WILL NEVER DO • Ask you to create an account • Collect your email • Send your data to a server • Show you ads • Charge you a subscription • Track you across apps

REQUIREMENTS iPhone running iOS 15.1 or later. Apple Watch optional but recommended for heart-rate and calorie integration during sessions.