RunSolver vs TriProCalc

RunSolver is the runner's toolkit — built for calculating, not tracking. Whether you're planning a race, dialing in your splits, or predicting a finish time, RunSolver gives you fast, focused tools that work together. Enter your distance and time once, and every screen updates — pace, splits, predictions, and workouts all stay in sync. PACE CALCULATOR Pick a distance or enter your own, set a finish time, and instantly see your pace, speed, and converted units. Clean, simple, no clutter. SPLIT GENERATOR Generate per-km or per-mile splits with even, negative, or positive split strategies. Visualize your pace curve and share a race card image with friends. RACE PREDICTOR Use the Riegel formula to predict finish times across distances — from the mile to 50K. Adjust for fitness level and see your age grade percentage. WORKOUT BUILDER Choose from smart templates (intervals, tempo, long run, speed work) with paces derived from your target race time. Or build a fully custom workout and save it for later. TOOLS - Pace conversion (min/km to min/mi and back) - Training pace zones from your threshold - Treadmill speed to outdoor pace - Boston Qualifier calculator - Race comparison (planned vs actual) - Personal records tracker DESIGNED FOR RUNNERS - Dark theme, clean interface - Wheel pickers for fast time entry - km/mi toggle everywhere - Shareable race plan cards - All calculations happen instantly — no loading, no accounts, no tracking RunSolver is 100% free with no ads. Run the numbers.

TriPro Calc is more than just a calculator — it’s a professional race planning tool built by athletes, for athletes. We combine precision calculations with exceptional usability. Why TriPro Calc belongs on your phone 4 Calculators in One TriPro Calc features a central race planning hub (supporting everything up to Double Ironman) plus three fully independent tools for swimming, cycling, and running. Calculate pace and time for full races or individual training sessions. Built for Everyone (Left-Handed Mode) We know one-handed usability matters. TriPro Calc is the only app with a dedicated Left-Handed Mode — switch instantly and all controls mirror for your left thumb. Pro-Level Accuracy No more awkward seconds. All pace and time calculations are automatically rounded to the nearest 5 seconds — just like professional race planning. Flexible Systems Easily switch between kilometers and miles on the main screen, while keeping metric consistency within the individual tools. History & Sharing Save your plans as detailed cards with pace and speed data. Share your calculations with your coach or friends via WhatsApp, Telegram, or social media in just one tap.