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VBT · Android app

Phone-camera VBT without a linear transducer

SpeedTrackr Barbell Velocity turns an Android phone into practice-grade video VBT: mean and peak concentric velocity, velocity loss, and a shareable bar-path overlay — no sensor on the bar. Free to start. Not a claim of encoder parity with Metric or Qwik.

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Toolkit demo · bar-path overlay

SpeedTrackr performance tools used in training

Film the set. Cut when velocity loss says so.

What you get

Session VBT from phone video

On-device processing. One free set per day on the free tier. Same Android app as start/finish timing gates, jump/RSI, reaction, and sprint form.

Bar-path overlay and per-rep velocity readouts in the SpeedTrackr Android app

Mean & peak velocity

Per-rep mean concentric velocity and peak velocity from phone video after you tap the plate — the session numbers coaches actually cut sets on.

Velocity loss

Velocity-loss autoregulation from the same clip so you can decide when to stop the set without guessing.

Bar-path overlay

A shareable bar-path overlay processed on-device. No linear transducer on the bar, and the lifting clip does not leave the phone for VBT.

How it works

Film, tap, decide

Film a clean side view

Android phone, plate in frame, decent light. Pick the athlete in Coach Mode so the set lands under the right name.

Tap the plate

Trim the clip in Barbell Velocity, tap the weight plate, and let on-device video VBT read the set.

Cut or keep the set

Read mean/peak velocity and velocity loss, show the overlay, save, and move on. Excel export stays in the Android app.

Honest vs Metric / Qwik

Android session lab — not encoder parity

Metric-class apps earn attention in VBT roundups. Use them if that is all you need. Use SpeedTrackr when bar speed should live next to practice start/finish timing, jump, reaction, and sprint form on the Android phones your squad already carries.

Keep a hardware transducer when your program already depends on one. Phone VBT here is practice-grade video measurement.

Who it is for

Strength athletes and coaches on Android

  • 01Lifters who want velocity loss without buying a cable encoder
  • 02Track / field coaches who already run SpeedTrackr timing and jump
  • 03Small squads that need names on sets via Coach Mode — not a web OS
HomePhone sprint timingSprint formVBT blog guide

Frequently asked questions

Quotable answers about phone-camera VBT on Android — scope vs Metric/Qwik, free tier, and what this is not.

What is phone-camera VBT without a linear transducer?
SpeedTrackr Barbell Velocity is video VBT on Android: film a set, tap the plate, and get mean concentric velocity, peak velocity, velocity loss, and a shareable bar-path overlay — no cable or encoder on the bar. Free tier includes one set per day; processing is on-device.
How does SpeedTrackr compare to Metric or Qwik?
Metric and similar apps often win “best VBT app” roundups, especially where iPhone is assumed. SpeedTrackr’s lane is Android session VBT next to dual-phone start/finish timing, reaction, jump/RSI, and sprint form, with Coach Mode names on every set. We do not claim encoder parity with Metric, Vitruve, GymAware, or other transducer systems.
Is it as accurate as a cable encoder?
No claim of encoder or lab transducer parity. Use phone VBT for practice decisions (cut the set, compare days). Keep a hardware encoder when your program already depends on one.
Is SpeedTrackr Android-only?
Yes. VBT, timing gates, jump/RSI, sprint form, reaction, coach roster, and Excel export all run in the Android app. An iOS version is not available.
Is this a coach operating system?
No. Coaches get an athlete roster and Excel export inside the Android app. That is lightweight coach support — not a periodization suite, wellness dashboard, or web coach OS.
Does VBT give sprint split times?
No. Dual-phone timing is a separate tool: practice-grade start/finish timing for one elapsed time (±0.022s consistency vs hand timing on the site), plus reaction off a start cue when you use that mode — never intermediate or multi-gate splits.
Does my lifting video leave the phone?
For VBT, SpeedTrackr processes video on-device so your lifting clip does not leave the phone. Follow in-app privacy prompts for any other AI features that require upload.
Is it free?
Free to start. The free VBT tier includes one set per day. Premium unlocks more in-app capacity — check Google Play or the paywall for current tiers. We do not invent dollar prices here.

Get phone VBT on Android

Film the set. Cut when velocity loss says so. Free to start.

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