Free Tools — No Signup, Instant Results

Single-purpose utilities for knowledge workers and Japan enthusiasts. Zero ads, zero accounts.

All tools run entirely in your browser — no data is sent to any server. Screen worker tools help knowledge workers read, write, and focus better. Japan tools help travellers, students, and anime fans explore the language.

Screen & Writing Tools

Reading Time Estimator

How long will this take to read?

Readability Score Checker

Flesch-Kincaid grade level & reading ease

Passive Voice Detector

Highlight passive sentences in your writing

Word Frequency Analyzer

See which words dominate your text

Focus Session Planner

Deep work blocks + eye break schedule

Gabor Patch Eye Training

Free in-browser vision training session

Japanese Language & Culture Tools

Japanese Name Generator

Find your Japanese name with meaning

Romaji ↔ Kana Converter

Convert between romaji, hiragana & katakana

Japanese Travel Phrases

Essential phrases for your Japan trip

Anime Name Meaning Lookup

Discover the kanji behind your favourite names

Katakana Loanword Detector

Find the English words hiding in Japanese text

JLPT Vocabulary Quiz

Test your N5–N1 vocabulary level

Frequently Asked Questions

What kinds of free tools are available on this hub?

This hub offers 12 free tools in two categories: 6 screen worker tools for writing and productivity (reading time calculator, readability checker, passive voice detector, word frequency analyzer, focus session planner, and Gabor patch eye training) and 6 Japanese language tools (name generator, romaji converter, travel phrases, anime name lookup, katakana loanword detector, and JLPT quiz).

Do these tools require an account or payment?

No. All tools on this hub are completely free to use with no account registration required. No personal data is collected or uploaded to any server. Everything runs in your browser. There are no usage limits, ads, or hidden charges — just paste or type and get instant results.

How do these tools help with eye health and Japanese learning?

The screen worker tools include Gabor patch training, a clinically studied visual exercise that improves contrast sensitivity through perceptual learning. The Japan tools help learners master vocabulary, phrases, and script conversion. Both categories connect to our products: ClearSight for extended eye training and Immerse Japanese for inline vocabulary learning.

Related tools: ClearSight · Immerse Japanese