Start a timer, make a choice, or test your response.

Create 1–20 reproducible custom 5×5 bingo cards from your own items and print the current browser-local batch.

Count instantly with named tallies, local saving, and a clear soft goal or hard cap that never exceeds its target.

Estimate PC hip-fire sensitivity from disclosed community yaw assumptions, with exact and rounded settings, modelled cm/360, and a source receipt.

Draw family-safe charades prompts to act out by category and difficulty, with no repeats in a session and an optional timed round with score.

Enter two names for a repeatable, just-for-fun score from 0 to 100. Swapping names keeps the score, and names never leave your browser.

Pick 1 to 12 real animals from a cited 48-species list, filter by group, and see each scientific name and ITIS record.

Draw 1 to 10 UN member countries from a visible World or regional pool, avoid repeats, and export a dated local CSV.

Pick a random A–Z letter, vowel, consonant, or custom letter. Exclude letters and see the exact pool on a matching wheel.

Generate 1 to 128 unique everyday objects from a versioned local dataset, with category filters and a clear generation receipt.

Count local calendar sleeps until Christmas morning, decide whether tonight counts, and print a dated bedtime checklist.

Set up to three named browser alarms with live countdowns, progressive volume, five-minute snooze, local recovery, and explicit browser reliability limits.

Start a 5-minute timer in one tap, add optional 1-minute and 30-second alerts, and restore accurate time after a background tab or reload.

Start a 10-minute countdown in one tap, add optional 5- and 1-minute alerts, and restore accurate time after a background tab or reload.

Start a 15-minute countdown in one tap, add optional checkpoint alerts, and recover accurate time after a background tab or reload.

Start a 20-minute countdown in one tap, add optional halfway, 5-minute, and final-minute alerts, and restore accurate time after a reload.

Flip for heads or tails, use fixed best-of-3 or best-of-5 rounds, and copy the result with your named choices and every toss.

Spin for an instant random YES or NO answer, add MAYBE, spin again, and see current-session counts without sign-up.

Set an integer range, step and exclusions, then spin a browser-local number wheel with repeat or draw-each-once modes.

Spin a browser-local wheel to pick from up to 100 names or options, remove winners, save lists, and copy the draw history.

Guess 10 flags from a curated 50-country set, learn a visual cue, then retry only the flags you missed.

Test five valid rounds using a keyboard, mouse, or touch. Early responses and interrupted rounds do not count toward your result.

Run a private 1, 5, or 10 second clicks-per-second test with primary pointer presses and a clearly timed result.

Test Left, Right and stereo audio with short low-gain tones, an immediate Stop button, and a controlled 100 Hz–10 kHz sweep.

Measure browser-delivered FPS, median and p95 frame intervals, and delayed callbacks with a short visible-tab test and clear hardware limits.

Paste names and split them into size-balanced random groups by group count or maximum group size, then reshuffle or copy the result.

Generate family-friendly drawing words by category and difficulty, avoid repeats during the session, and run a separate 30, 60, or 90-second timer.

Play a Hangman game with 360 local prompts, category and difficulty choices, or a private same-device custom word.

Combine two names into up to 12 couple, friendship, or fandom ship-name ideas using both directions, shared-letter overlaps, and adjustable cuts.