← All sports kits

Sg

Strength & Gym

For lifters — strength training, bodybuilding, powerlifting, or general gym work. Estimated 1RM from any weight × reps (Epley / Brzycki / Lombardi formulas). Plate math for any barbell setup (45 / 25 / 15 / 10 / 5 / 2.5 lb or 20 / 15 / 10 / 5 / 2.5 / 1.25 kg). Workout split planner for push/pull/legs, upper/lower, full-body, etc. Plus the fitness essentials.

12 tools · 4 sections

Strength math

3 tools

1RM estimation, plate math, percentages of working sets.

One Rep Max Calculator

Calculate your 1RM from a working set. Five formulas, training percentage table.

Plate Calculator

Calculate which plates to load on a barbell to reach your target weight. Kg and lb supported.

Percentage Calculator

Calculate percentages, increases, decreases, and changes.

Workout planning

2 tools

Split templates — push/pull/legs, upper/lower, full-body.

Workout Split Planner

Build a weekly training program from a 70+ exercise library. Print-ready, with weekly volume tracking.

Focus timer with work sessions and break intervals.

Diet + recovery

5 tools

Bulk / cut / maintain calorie targets, macros, hydration.

Calorie Calculator

Calculate daily calorie needs based on your goals and activity.

Macro Calculator

Calculate your daily protein, carbs, and fat targets.

Water Intake Calculator

Find out how much water you should drink daily.

Calculate your Body Mass Index with visual results and tracking.

Body Fat Estimator

Estimate body fat percentage using measurements.

Timers

2 tools

Rest periods between sets, AMRAP / EMOM, stretch timers.

Precise stopwatch with lap tracking.

Countdown Timer

Set a countdown timer with custom duration.

Looking for something specific? Browse all 240 tools.

Built browser-first. Run by one developer.

Every tool runs on your device. No tracking pixels, no sign-up to start. The numbers below are pulled live from the registry.

240

Free tools

Across 14 categories

7

Visual editors

PDF · image · video · audio

32

Curated kits

By profession + lifestyle

17

AI tools

Powered by Claude API

Files never uploadNo tracking pixelsNo sign-up neededWorks in any modern browser

The handful of AI tools (paraphrase, summarise, blog, captions, etc.) send your prompt text to Anthropic's Claude API to do the work. Files, images, PDFs and video never leave your device. Pick the tools that fit your privacy comfort.