Pace Pro
Estimate equivalent race performances from a recent result across standard distances.
Offline running toolkit
Runners Pro Tools
Practical race and training calculators for runners: pace prediction, heart-rate zones, ultra pacing, and age grading, without accounts, subscriptions, advertising, or cloud sync.
Runners Pro Tools
Pace Pro
Predict equivalent race times and paces.
Heart Rate Zones
Calculate MHR, HRR, and LTHR training zones.
Ultra Pace
Plan aid stations, cutoffs, goals, and pacing tables.
Age Grade Performance
Compare performances with bundled local records.
Built for race planning, not noise.
Runners Pro Tools focuses on v1 essentials: clear calculations, local persistence, metric and imperial units, and results you can use on training days or race week.
Heart Rate Zones
Calculate five training zones using maximum heart rate, heart-rate reserve, or lactate threshold.
Ultra Pace
Build pacing plans with race start time, aid stations, cutoffs, notes, and A/B/C goals.
Age Grade
Compare performances against bundled offline benchmark records and view equivalent finish times.
Offline-first by design.
The app is designed to work after installation without accounts, advertising, analytics, cloud sync, or app-managed data uploads.
Local storage
Tool inputs, saved plans, and preferences stay on the device.
No account required
There is no sign-in, user profile, subscription, or cloud account.
No internet permission
The current Android app does not request Android internet access.