Gym Keeper is a structured strength training journal designed for systematic workout tracking without subscription or cloud dependency. SESSION MANAGEMENT Six preset templates: Push Day, Pull Day, Leg Day, Full Body, Cardio, Custom. Each preset pre-populates default exercises for rapid session creation. Custom sessions support fully user-defined exercise lists. PER-EXERCISE LOGGING Each exercise entry supports: multiple sets with individual rep counts and weight values, free-text notes, and automatic volume calculation (total reps × weight per set, summed across sets). UNIT HANDLING Weight stored internally in kg. Display toggle between kg and lb via Settings. Conversion applied at render time, no data migration required. HISTORY & REVIEW Sessions indexed by date. Summary view shows total volume, total sets, and duration per session. Detail view expands to individual exercise and set level. PRIVACY No network permissions. Data stored in UserDefaults on-device. Uninstall removes all data. Compatible with iOS 16+.
