Swim Pace Board is an offline pace tool for swimmers who want to turn goal times into clear split targets and reusable training sets. Core features: 1. Pace calculator: enter distance and time to calculate 50 m, 100 m, and 400 m pace. 2. Goal time reverse calculation: enter target pace and race distance to generate finish time and split tables. 3. Split timing tables: save common sets such as 10x100, 8x50, and 4x400 for quick reuse. 4. Intervals and send-off times: calculate send-off intervals, rest time, and total set duration. 5. Local records: save favorite distances, stroke notes, and training plans without an internet connection. All data is stored only on your device. No login is required, the app does not connect to the internet, and it does not collect personal data.