Free Player Resources

15 Free Sports Tools.

What’s on this page? Every free tool Ali Shuttler publishes — in one place. Calculators for racket selection, string tension, grip size, calories, and shoe sizing. Live scoreboards for six sports. A tournament scheduler, fitness test, and training tool. All free, no sign-up.
6 Calculators & Finders
6 Live Scoreboards
3 Training & Tournament Tools
15 Total — All Free

Calculators & Finders.

6 Tools

Some Questions Need a
Result, Not a Guide.

A 1,500-word article about grip size is useful. A tool that gives you “your grip size is L3 / 4⅜ inches” in 20 seconds is more useful. Both have a place — the tools page is where you get the direct answer.

No sign-up, no email required

Every tool on this page runs in your browser. Nothing to install, no account needed.

Specific outputs, not ranges

Tools give you a number or a recommendation — not “it depends.” Context is added after the result, not before.

Built from real playing decisions

Each tool was created because players kept asking the same question in guides and comment sections. These are the answers in interactive form.

Scoreboards for 6 Sports.

6 Tools

Free browser-based scoreboards — no app download, no Bluetooth required. Open on a phone or tablet and track points in real time during training sessions, club nights, or casual games.

Training & Tournament Tools.

3 Tools

Quick Answers.

Ali Shuttler currently has 15 free sports tools: 6 calculators and finders (Badminton Racket Selector, Tennis Grip Size Finder, Tennis String Tension Calculator, Pickleball Calorie Burn Calculator, Sports Shoe Size Calculator, and Smash Speed Lab), 6 live scoreboards for badminton, tennis, pickleball, racquetball, baseball, and volleyball, plus 3 training and tournament tools — the Pickleball Round Robin Generator, Badminton Fitness Test, and Badminton Training Tool.
Yes. The Badminton Racket Selector asks about your playing level, preferred shot type, target weight range, and whether you prioritise smash power, control, or all-round play — then gives a specific racket type recommendation with reasoning. No sign-up needed.
You enter your racket head size (in sq. inches), string material (polyester, nylon, or natural gut), and playing style (baseline power, all-court, or serve and volley). The calculator returns a recommended tension range in both lbs and kg and explains how stringing near the top or bottom of that range changes the feel.
Yes. All six scoreboards are built to run in a mobile browser without downloading an app. Open the link on your phone before the match, tap to add points, and keep the screen on during play. No Bluetooth or hardware required.
Enter the number of players (minimum 4, no maximum), the number of available courts, and whether games are singles or doubles. The tool generates a full round robin schedule — each pair of players meets once — with matches distributed evenly across courts and rest rounds balanced so no player sits out consecutively.

Tools First.
Then the Guides.

Got your answer from a tool? The guides cover the next layer — technique, gear detail, training structure, and the context behind the numbers. Browse by sport or start from the homepage.