Free online tools
Free, privacy-first tools for neurodivergent minds — sensory and regulation support, communication boards, honest self-understanding tests — plus the developer utilities the site is built with. Everything runs in your browser and your data stays on your device.
🧩 Sensory & Regulation — for neurodivergent minds
Free, no-signup, local-first tools for autistic and neurodivergent people. Research-cited, honest about limits — and your data (mic audio, check-ins, history) never leaves your device. Every tool has one-click export and delete.
Sound Level Meter
Live loudness + the frequency bands research links to auditory overload (250 Hz and 8 kHz). Mic audio never leaves the page.
Noise Mask (white / pink / brown)
Free, offline noise generation with an honest tolerance check — masking helps many sound-sensitive people, not everyone.
Sensory Overload Meter
Noise, light, crowds, task and masking in one visible number — and it learns your personal overload threshold. Local-only history with export/delete.
Breathing Pacer
Visual coherent (~5.5s), box and 4-7-8 patterns with a reduced-motion fallback. No sound required, no streaks, no notifications.
Stress Check-In
Six concrete questions turn vague stress into a visible gauge, then suggest YOUR own coping list. SAM-mechanism, RCT-cited. Never prompts you.
Recovery Mode
A deliberately near-empty page for meltdowns, shutdowns and overload: dim, monochrome, one line at a time, safe stops always allowed.
Calm Corner
Name the feeling first — sad, worried, angry, excited — then get a small activity that fits: breathing, a hug counter, a body map, push-it-out. Kid-friendly, open to anyone. From the Neuro-M app family.
Heartbeat Anchor
A slow, steady beat to settle toward — see it pulse, optionally hear the synthesized lub-dub, change its color, make light with restless hands.
Busy Board
Nine fidgets in one board: bell, gears, light switch, pop-it, bead, spinner, heart, slider, zipper. Every sound synthesized live in your browser.
Sensory Canvas
Rub or tap a canvas that answers back — sand scatters, water blooms, slime squelches, glow follows, sparks and fireworks burst on tap.
Sensory Gravity
Drop balls, confetti, snow or rising bubbles into a small physics world. Tilt your phone to steer; your finger herds them. A settling toy, not a game.
Flow & Create
Ten gentle brushes — pen, rainbow, neon glow, mirror, ripples, stamps, fireworks, blooming garden, spirals, galaxies. Saves stay on your device.
🗣️ Communication & Needs — say it, choose it
Boards that speak for the person tapping them — needs, core words, phrases, choices. Everything runs in your browser, every photo and choice stays on this device, and the voice is your browser's own. From the Neuro-M app's communication family.
My Board
Tap what you need — water, food, a hug, or core words like "help" and "stop" — and the board says it out loud. A gentle wait timer for hard pauses, room for your own photos. Nothing uploads.
My Choices
A first-then choice board: build a path of two to four choices, every tap speaks it aloud, and the 👀 button shows the pick full-screen to a grown-up.
Ask & Wonder
"I'm hungry", "More please", "I don't like this" — a phrase board for feelings and needs, plus a Wonder mode of gentle facts for curious kids. Speaks with your browser's voice.
Video Board
A "what to watch" choice board: plain labels, no brand artwork — photograph the real thing and the tile becomes yours. Taps speak the pick aloud.
🎈 Play & Cause-Effect — tap, watch, giggle
Gentle play for little hands and busy minds: cause-and-effect games, music you can't play wrong, and toys that answer your touch. No fail states, no timers pressuring anyone, every sound synthesized live in your browser. From the Neuro-M app's play family.
Tap Pop
Critters pop up and hide again — tap them for a happy pop and a little tune. A gentle reaction game with a best score that stays on your device.
Pattern Follow
Watch the colored bubbles light up one by one, then tap the pattern back. It grows one step at a time, and a slip just softly replays — never a fail.
Worm Maze
Guide a cheerful worm to the fruit with your finger. It grows a segment with every bite — no walls that hurt, no timer, just motion play.
Music & Sounds
Seven colorful xylophone bars in real notes, five gentle instrument voices, and a bubble mode where notes float up. No wrong notes, ever.
Melody Bubbles
Bubbles rise, you pop them into melodies — five instrument timbres from music box to synth. Endless, scoreless, gentle.
Memory Match
Flip emoji cards to find matching pairs. No timer, no losing — cards that don't match simply flip back and wait.
Harmony
Touch and move to create symmetrical magic — mirrored strokes that glow and bloom across a canvas. Saves stay on your device.
🎭 The Unmasking Suite — competence, cost, and coming back to yourself
Seven tools for the slow work of taking the mask off: see your camouflage pattern, see where you bend, read stress as competence, catch burnout early, budget your energy, and climb back toward your own preferences — one safe step at a time. Self-authored, research-cited, never a diagnosis; interpretation is computed server-side, everything you track stays on your device. Read the companion essay →
Camouflage Profile
How much effort goes into compensating, concealing and conforming? A named profile of your pattern, what the research says it tends to cost, and where unmasking could start. Not the CAT-Q — self-authored from the published construct.
Preference Map
Two passes over five preference axes — what comes naturally vs. what you perform in watched contexts. The gap is the Bend: a deliberate, own-named construct for type-curious readers who never needed a brand to know themselves.
Signal Decoder
A stress response is the system doing its job under real load. Pick what happened — frozen, blue screen, explosion, autopilot, long crash — and read what it was managing and what it needs now. Cited, hedged, crisis-safe.
Early-Warning Tracker
A weekly check-in against the published autistic-burnout signs — exhaustion, withdrawal, shrinking tolerance — with a trend that never leaves your browser and honest banding. Not a screener; a self-knowledge tool.
Energy Ledger
Budget the charge: log what drains and what recharges, tag the masking costs, and get an honest reading of the balance. Energy-rationing metaphors trace to spoon theory (credited); the units are our own.
Unmasking Ladder
Micro-practices ordered by stakes, built for the contexts you pick as safe enough. Unmasking is gradual, revocable, and never a disclosure plan — the goal is choice, not purity.
Interest & Flow Map
Your interests are how your attention economy actually works. Map the tunnels, name the flow, and get a recharge menu that treats interest-led time as infrastructure — because it is.
🧠 Cognitive & Personality Assessments
Big Five Personality Test (Quick, 50-Item)
A scientific, trait-level OCEAN profile from 50 public-domain IPIP items with normative percentiles. No signup — answers are collected in your browser, scored server-side, nothing stored. Not the MBTI® — the academic-consensus Big Five.
Big Five Personality Test (Deep, 120-Item)
A research-grade OCEAN profile across all 30 facets (6 per trait) from 120 public-domain IPIP-NEO items (Johnson, 2014). Local save-progress; answers scored server-side, nothing stored. Not the MBTI®.
Jungian 16-Type Indicator
A four-letter cognitive-type result (INTJ–ESFP) from self-authored Jungian items — the popular "type" lens, served legally. Not the MBTI® assessment (MBTI is a trademark of The Myers-Briggs Company). For self-reflection.
Everything above runs on engineering we practise every day, and the tools below are that same craft — local-AI calculators, identity verifiers, data transformers — published in their own right. Privacy-first like everything else here: 100% client-side, no signup, nothing uploaded.
🤖 Local AI, LLMs & Hardware Utilities
Local LLM & ComfyUI VRAM Calculator
Calculate exact GPU memory requirements for Ollama, llama.cpp, vLLM, and Stable Diffusion across model sizes (3B to 405B), quantization presets (`Q4_K_M`, `Q8_0`, `FP16`), and context lengths.
Local LLM Prompt & ChatML Builder
Format system prompts, user turns, and assistant outputs into valid ChatML ChatML. Chat Markup Language — a text format for structuring multi-turn prompts sent to chat models. , Llama-3, and DeepSeek templates 100% in-browser.
Offline BPE Token Counter & Context Visualizer
Calculate exact BPE token counts, inspect sub-word token fragmentation, and monitor context-window percentage usage offline.
MemScope Memory Compression & VRAM Tracker
Portable Windows executable that surfaces hidden Windows Memory Compression pressure, tracks 64-bit DXGI VRAM VRAM. Video RAM — the memory on your graphics card, used by games and AI models; a scarce resource when running local AI. allocations per process, and auto-flushes memory on OOM risk.
🔑 Cryptography & Verifiable Identity Tools
SD-JWT & Verifiable Credential Inspector
Decode, inspect claims, and analyze selective disclosure digests (`~sd`) in SD-JWT SD-JWT. Selective-Disclosure JWT — a format that lets a holder reveal only the fields needed (e.g. prove you're over 18 without showing your birthdate). (RFC 9901) and W3C VC tokens offline in your browser.
Mneurix Verifiers, Converters & Diagnostic Suite
Access the complete suite of client-side verifiers: Key Binding Verifier, JWK ↔ PEM Converter, Bitstring Status List Decoder, and Open Badges 3.0 Schema Verifier.
🛠️ Data Transformers & Security Utilities
Multi-Format Data Converter
Convert configuration files and structured payloads between JSON, YAML, TOML, and CSV 100% client-side with zero data transmission.
Hash, Checksum & HMAC Generator
Compute SHA-256, SHA-512, and HMAC cryptographic hashes across text strings or uploaded files 100% in your browser.
In-Browser SQL & CSV Query Sandbox
Execute complex SQL queries, JOINs, and aggregations on CSV datasets using an in-memory WASM WASM. WebAssembly — a fast, safe format for running near-native-speed code inside a browser (used for in-browser SQL, image processing, etc.). SQL database engine 100% locally.
Private Voice Note & Speech Transcriber
Record voice notes or process audio buffers to generate timestamped text transcripts and `.srt` subtitle files 100% offline.
Live Mermaid Diagram & Architecture Studio
Render interactive architecture flowcharts, sequence diagrams, and class diagrams in real time with high-res SVG export.
📦 Open-Source Libraries, WASM Engines & W3C Standards
100% Offline Client-Side ExecutionAll Mneurix in-browser developer utilities are built using industry-standard open-source packages and W3C Web APIs:
- Mermaid.js (MIT License) — Live client-side diagram & flowchart rendering
- @sqlite.org/sqlite-wasm (public domain, sqlite.org) — the official WebAssembly SQLite build for the SQL sandbox
- W3C Web Speech & WebAudio APIs — Private in-memory microphone speech transcription
- W3C WebCrypto API (
crypto.subtle) — Hardware-accelerated client-side hashing - tiktoken & js-yaml (MIT License) — BPE tokenization & multi-format data parsing
⚖️ Legal Notice & Disclaimer: All tools in the Mneurix tool directory are provided "as is", without warranty of any kind, express or implied, including but not limited to warranties of accuracy, merchantability, or fitness for a particular purpose. Mind and developer tools process data 100% locally inside your browser memory. The one exception: personality-test answers are sent once to our scoring endpoint to compute your results, and nothing is collected, logged, or stored there.