Train with purpose
Training Max percentages, AMRAP sets, FSL backoff work and automatic cycle progression.
Strength training, simplified
Simple 531
Plan, log and review your four main lifts without an account, subscription or cloud service. Your training history stays on your iPhone.
Free
Private and local
No account
CSV and JSON export
Track what matters
Set-by-set logging, accessories, RPE, estimated 1RM, bodyweight and plate calculations.
Own your history
Copy readable logs, export spreadsheet-ready CSV, and create complete local backups.