What’s new

What’s new in Racketlens, newest first. Every feature has its own page in this guide.

8 October 2026#

Your stroke, step by step#

Each stroke is split into five phases (on a serve: toss, trophy, drive, contact and finish), with its frame, the measurements drawn on the video and a score against pros. In Shots you open Step by step on any stroke, even one that isn’t scanned; in Scan a session you see each phase’s session score, your five typical frames and What to work on, with drills and a button to ask the AI coach about that phase. A phase found by a fallback rule (~) is never what you’re told to work on, and a measurement isn’t given where its joints are hidden. Older sessions need scanning again: Scan again measures their phases. What the numbers mean

Pros at real speed#

The pro library is new: 90 strokes by 21 pros filmed at real speed, nearly all at 60 frames per second, instead of slow-motion compilations. When you step frame by frame, each step of the pro is a real instant, just like your video. Each clip is a rally of 8 to 25 seconds with several strokes: the main stroke is synced and you can step through the others. Most are filmed from behind. Compare with pros

Your stroke, always in sight#

Under the video, the strokes bar shows each of your strokes with its type and time. The one you pick (a click, ◀ ▶ or the [ and ] keys) is your stroke for everything: Pros, AI coach, Body, export and upload. The panel now has four tabs: Session, Shots, This stroke (Pros, AI coach and Body, with the stroke at the top) and Tools (Ball and Video). On the timelines, each stroke has its type’s colour. Getting started

No dead ends#

When the scan finds no strokes, it says how to go on right there. Without sound, mark your strokes with H and scan with them. When everyone moves too slowly, it asks Did you film in slow motion? and fixes it in one click. Scan session

Simpler Compare#

One tool rail for both videos, and the sync as a clear state (Synced in 3 phases) you adjust only if you need to. Scan results fold by section, your model’s clip is fetched ahead so it opens at once, a running scan shows in the top bar, and on phones the buttons are bigger and the tools have names. Compare with pros

A tidier app#

We went through the whole app so nothing overlaps and every control is where you look for it. The playback bar fits on one line (on narrow screens the loop buttons show only their icon) and the frame-by-frame bar hatches what lies before the start and after the end. In Compare, the bottom bar is grouped into line up, status and play, without cutting text off, and each video no longer repeats the speed while they’re linked. The Shots tab adds Others, to recover strokes of yours that weren’t recognised, and Session explains why there’s no report, with a button to that list. The pro library is a compact table by player and camera, and clips open at once. While something loads (the app, Home, your history, the tabs waiting for the server), you see its shape in grey instead of an empty space, and the screen no longer jumps when it arrives. In Pros, move the playhead to another stroke and press again to compare it: the button says which stroke it will compare. Drag the right-hand panel’s edge to make it wider or narrower; it remembers the width. Shots · Compare with pros · Playback and tools

7 October 2026#

Your sessions on any device#

When you’re signed in, every video of yours that you open uploads to your account by itself, privately, so you can open and analyse that session on another computer without the file: the scan, the body, the ball, the AI coach, comparisons and your history work the same. The top bar shows the progress (Uploading 42% · keep this window open); if you close the window, the upload picks up where it left off. On Home, Videos in your account shows the space, lets you delete videos and has Upload my session videos to turn it off. The analysis still runs on your device and the AI only sees a few frames. Your sessions on any device · Privacy and data

5 October 2026#

A clearer training space#

Home now puts your session, next step and practice plan first. Reopening a local video explains how to select the original file again, and the instructions stay visible if you cancel. Progress prioritizes scores and consistency; similarity to a professional stays a style reference. The public landing page shows the actual analyzer and explains invitation-only access. Getting started · History

This guide#

A public guide to the app, in Spanish and English, with search (⌘K or Ctrl+K). Every tab in the app links to its page, and the help (?) links to the full guide.

Scan session#

One click on Scan session finds your forehands, backhands and serves and, for each kind, gives you a score (technique and consistency), who you look like, your recommended model with a one-click synced comparison, the fundamentals to work on, drills and three key frames of your typical stroke. It runs in the background, shows its stages and the time left, and can be stopped and continued. In group lessons it asks Who are you in this video? and completes the report once you answer. It keeps a single typical stroke per video and kind of stroke. Scan session

Ball analysis#

Mark the court once (guided calibration, with a verdict on the fit) and the app follows the ball of each stroke: margin over the net, depth, speed, in or out and the landing map, with what’s measured kept apart from what’s projected. It’s now 4 times faster and the page stays responsive while it works. A ball that clipped the tape and went over is described that way, and the front view warns that its numbers are rough. Calibrate the court · Ball analysis

History#

Your progress per player and stroke: what really changed (kept apart from the normal noise between sessions), one chart per number, who you looked like then and now, before and after with both strokes side by side, your stroke collection, the AI’s notes and an AI progress review. It only compares sessions filmed from the same camera, and shows the ball even when you have a single session. History

Drills and practice plan#

A library of 58 drills, picked from what the app measured, with steps, a feel cue, the common mistake and how to check it in Racketlens. Add to my plan puts them in your plan, where you tick Done today. The AI coach picks from the same library. Drills and plan

4 October 2026#

• The app asks you to sign in: Racketlens is invitation-only and /app only opens with your account. Getting started
• Links that remember where you were: the link says which video, moment, speed and tab you have open; back, forward and reload work.
• Pro clips online: library strokes play without downloading anything.
• iPhone videos with spatial audio: the scan finds the right audio track.

3 October 2026#

• Players: analyse your students or your family without mixing their analyses. Players
• Cloud strokes: upload a stroke (not the whole video) to compare it later on any device. Shots
• A monthly AI allowance per account, shown in the Coach tab and in your account. AI coach

2 October 2026#

The first version of Racketlens: frame-by-frame slow motion, body tracking with angles, rallies found by sound, measuring the ball by hand, side-by-side comparison with the pros, the AI coach and your analyses saved to your account.