Train Smarter, Without Buying Hardware
Every sprinter — from beginner to elite — deserves tools to train with numbers. Not everyone has a laser gate, a jump mat, or a linear transducer.
SpeedTrackr’s free athlete tools now live in the Android app. This is not a browser calculator suite and we are not promising to restore the old web utilities. The free-tools hub exists so search still lands on a clear Play Store path.
What’s in the Android app (free to start)
These are the tools athletes actually open on the track:
Dual-phone timing gates
Pair two Android phones with a 4-digit code and time a practice run over a set distance (start to finish). Computer-vision finish detection. Practice-grade consistency — not official FAT or certified laser timing. Start at the timing gates page or read phone vs laser gates.
Jump / RSI
Vertical jump height and reactive strength index from flight-time video. No jump mat. See vertical jump analysis.
Reaction starts
Train sprint-start reaction off a start cue in the app. A simple web trainer still exists at Reaction Pro; the full start-timing workflow is Android.
Video VBT
On-device bar velocity (mean/peak, velocity loss, bar-path overlay). The free tier includes 1 set/day; we do not invent paid prices here.
Coach roster + Excel
Manage a simple athlete roster and export session data to Excel inside the Android app only. Not a web coach dashboard.
Why the web calculators went away
We used to ship browser utilities (sprint time estimator, weekly planner, strength % calculator). They sat next to a product that had become Android-first. Keeping a fake “free tools website” would have been the wrong promise.
- No restored web calculators. Old URLs such as
/free-tools/sprint-calculatorredirect to the hub. - No login wall on this site to use those dead pages — because the pages are gone.
- The app is free to start on Google Play.
Try the tools where training happens
- Read the hub: speedtrackr.com/free-tools
- Get the Android app: Google Play
- Or start from the homepage
Have an idea for a tool that belongs in the app? Message us on LinkedIn — we’re building this for athletes, by athletes.
Final Thoughts
You don’t need fancy hardware to get practice-grade numbers. You need two Android phones, consistent effort, and tools that show up at practice.
SpeedTrackr Free Tools is no longer a website of widgets. It’s the Android toolkit — timing, jump, reaction, VBT — free to start.
Get the app 👉 Google Play · www.speedtrackr.com/free-tools
Put it into practice.
Turn this insight into numbers — time your sprints, measure your jumps, and track your reaction time with SpeedTrackr for Android.
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