# JaveLab

> JaveLab (iPhone/iPad app by VANCOUVER K.K..)

- Source: https://appshunter.io/ios/app/javelab/id6779708272 (this page in markdown: same URL + `.md`)
- Developer: [VANCOUVER K.K.](https://appshunter.io/developer/1888383841)
- Category: Sports, Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: American English
- Released: 2026-06-17
- Data updated: 2026-07-29
- User reviews in markdown: https://appshunter.io/ios/app/javelab/id6779708272/reviews.md

## What is JaveLab?

JaveLab — your javelin throw, turned into data.
  
  JaveLab is a personal training notebook for javelin throwers. Film a throw from the side, let
  Your iPhone analyzes your body, and puts the objective data right next to how the throw actually
  Felt — so you can see what's working and improve, day by day.

  Everything runs on your device. No account, no sign-up, and your videos never leave your phone.

  RECORD YOUR PRACTICE
  • Organize throws into daily sessions with location, weather, and condition notes
  • Import a slow-motion video for each throw, or replace it anytime
  • Add a distance, a 1–5 feel rating, and a free-text note

  SEE YOUR FORM
  • On-device pose analysis tracks your wrist, elbow, shoulder, hips, and legs
  • Skeleton overlay and a wrist-motion trail drawn right on your video
  • Slow playback and frame-by-frame stepping to study the key moments

  MEASURE WHAT MATTERS
  • Release angle, your way: mark the release segment on the wrist trail and read the angle of its
  average direction against the horizon
  • Or draw a line along the javelin on a snapshot to record its release angle
  • Wrist-height curve, peak elbow angle, and block-leg extension
  • Camera-aware: angles are measured against the true horizontal

  TRACK YOUR PROGRESS
  • Compare two throws side by side and align them at release
  • Trends over time for your self-rating, distance, and release angle
  • Set a distance goal and keep a practice streak going

  BUILT FOR THE FIELD
  • Works fully offline — perfect for the track and the practice ground
  • A built-in filming guide keeps your setup consistent for reliable comparisons
  • Available in English, 日本語, Deutsch, and हिन्दी

  JaveLab doesn't tell you there's one "correct" throw. It puts your data and your feel side by
  side, and lets you find what makes your best throws yours.

  JaveLab shows ads. Your training data stays on your device.


## Version history (last 1 release)

### 1.0 — 2026-06-17

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-29.*