SportLab is a lightweight tool for fast calculations around sports numbers.
Enter an amount and a decimal ratio to instantly see the result and the difference. Save multiple entries, review them later, and keep everything tidy in one place. Works fully offline and never asks for an account.
Instant calculations - amount × ratio with live preview
Smart summary - switch Totals / Averages / Median with a tap
Inline validation - clear hints if inputs are not valid
Organized list - add, undo, delete, and revisit past entries
JSON export - long-press the title to share your list as JSON
Clear overview - compact summary chip for current results
Fully offline - no sign-in, no ads, no background activity
Privacy
Local data storage only
No tracking, no analytics, no personal accounts
Notes
For information and education purposes
No real-money features or external services
Does not provide training plans, medical advice, or health tracking