Symptom Diary β Online Record Daily Health Changes
Rate symptoms severity daily and add notes. Visual pain map. Export for doctor visit. Private local storage.
UD5 Toolkit
Practice past tense forms of common irregular verbs
Base Verb (Infinitive)
Type the past simple form below
| Base Form | Past Simple | Past Participle | Your Answer |
|---|---|---|---|
| No missed verbs yet β keep practicing! | |||
Rate symptoms severity daily and add notes. Visual pain map. Export for doctor visit. Private local storage.
Type JavaScript expressions and see output like a real browser console. Supports console.log, error, warn. Use for quick testing without DevTools.
Get a piece of either wise or hilariously useless advice. Instant life tips. Pure fun.
Roll any number of dice thousands of times and see a live bar chart of the sum distribution. Great for game designers.
Calculate probability of getting a specific sum when rolling multiple dice. Visual bar chart. Useful for tabletop RPG players. Instant local computation.
Press any key combination and record the sequence. Export as JSON or humanβreadable text. Perfect for documenting shortcuts.
Flip a coin and track your full history. See percentage of heads/tails and longest streak. Pure RNG, no bias.
Quickly find the final price after a percentage discount. Also works in reverse to find the original price. Handy for budget shoppers.
Generate a sample sleep schedule for babies 0-24 months based on age-appropriate wake windows. Nap count and bedtime suggestions. Educational reference.
Play the Pig dice game: roll to accumulate points, but a 1 ends your turn. First to 100 wins. Simple hotβseat local game.
Display used/total/limit JS heap size using performance.memory. Take snapshots and see growth. Simple memory leak detection.
Visualize the probability distribution of dice rolls as a colorβcoded heatmap. For any NdM combination. RPG strategist's dream.
Enter bolt diameter and applied torque to estimate clamping force. Use standard friction factors.
Enter two dateβtime values and get the exact years, months, days, hours, minutes difference. Word output also.
Enter your elevation and find the exact boiling point of water. Useful for highβaltitude cooking and tea brewing. Local math.
Compare insulation materials and thicknesses to achieve a target R-value. Understand U-factor. Educational home improvement tool. Local.
Type sender and recipient addresses and format them for printing on a standard envelope. No special software.
Test the powerful :has() pseudoβclass. Write selectors like .card:has(img) and see the live result. Revolutionary for CSS architecture.
Enter HSL values and get the exact RGB representation. Also shows hex. For fineβtuning design tokens. Clientβside.
Connect to a WebSocket endpoint, send messages, and view the stream of received data. Perfect for debugging realβtime apps.
Drag a positioned box and see the top/right/bottom/left values change. Understand containing blocks. Visual.
Answer 5 silly questions and get a fruit personality result with a description. Harmless fun, local only.
See a literal illustration of an idiom and guess the phrase. Fun for English learners.
Randomly show a Q-code and select correct meaning. Learn while having fun. For your license exam.
Hear a common bird song and choose the correct species from multiple choices. Ear training for birders.
See a clip of a famous artwork and choose the correct title. Art history fun. Local images.
Test yourself on international calling codes. Random country, type the code. Or reverse. Perfect for travelers.
See a cropped or simplified brand logo and guess the company. Hints available, score track. Local fun, no copyright infringement.
A country border shape appears, guess the nation. Multiple choice. Score tracking. Learn geography visually. Local SVG shapes.
Guess the movie title from a sequence of emojis. Hundreds of puzzles, score tracking. Pure frontend fun.