🍎 Teacher-built classroom tools

Teacher-built tools for the school routines that waste the most time.

Start with brb. for classroom sign-outs, or use Master Scheduler to draft specials and common-prep rotations without living in a spreadsheet. No ads. No student-data selling.

Try brb. free See Master Scheduler for schools Explore the toolkit

Teacher? Try any tool free for 14 days.  ·  Principal or AP? Master Scheduler for schools →

🧑‍🏫 Teacher-built 🏫 Classroom-tested 🛡️ Privacy-conscious 🌐 Browser-based
14-day free trial · Cancel anytime Designed to support FERPA · COPPA · NY Ed Law 2-d
Big Brain Labs mascot — a smiling brain wearing glasses, holding a beaker, with a lightbulb above its head

Why start with brb.?

brb. solves one of the most annoying classroom problems: bathroom and hallway sign-out chaos. Students sign out through a simple kiosk flow while teachers keep cleaner records — without passing around a clipboard.

🗒️

Less clipboard chaos

Students use a simple kiosk flow instead of interrupting the teacher or passing around a paper log.

📋

Cleaner records

Teachers get a clearer sign-out history for classroom routines, parent calls, and admin conversations.

💻

Built for school devices

Designed for browsers, Chromebooks, tablets, and the common classroom setups schools already have.

Open brb. → See pricing

See Big Brain Labs in action

Real screenshots from the live apps — what teachers and students actually see.

brb. by Big Brain Labs — bright hero of the touchless classroom sign-out kiosk. The headline reads 'Keeps classrooms flowing safely and efficiently.' A tablet kiosk mockup on the right shows a student waving at the camera.

brb. — the classroom sign-out kiosk

Students sign out with a wave or tap while teachers keep a clean log. The lead Big Brain Labs product.

Live · open brb. →
Screenshot of Morning Lab's classroom display: 'Good Morning, Tiny Humans!' header with calendar, Days of the Week, Days in School, Problem of the Day, Letter of the Day, and weather panels

Morning Lab — classroom display

Date, weather, days of the week, problem of the day, letter of the day — the morning meeting board for 3K–2 classrooms.

Preview · open Morning Lab →

Browse the full toolkit → More screenshots roll out as each tool graduates from preview.

🌱
One subscription unlocks everything
All-Access gives you brb. and every Big Brain Labs tool for $4.99/month or $39.99/year — new tools included automatically. Free 14-day trial, cancel anytime.
See pricing →
✦ Teacher-built ✦ Classroom-tested daily ✦ No ads, ever ✦ We never sell student data ✦ FERPA · COPPA · NY Ed Law 2-d aligned ✦ Single-file. No installs. ✦ Local-first — student data stays on your device ✦ Teacher-built ✦ Classroom-tested daily ✦ No ads, ever ✦ We never sell student data ✦ FERPA · COPPA · NY Ed Law 2-d aligned ✦ Single-file. No installs. ✦ Local-first — student data stays on your device ✦
The Toolkit

Everything below. One subscription.

All-Access includes every tool here — brb. and the apps below. Live apps are ready today. Preview apps are still being polished — they're labeled so you always know what's finished.

Available now
All ages · 1:1
🎓
Tutoring
1:1 WITH A REAL K–5 TEACHER

Private tutoring for all ages with George — coding, robotics, AI, and digital creativity, plus K–5 Math & ELA and patient tech help for adults. K–12 Computer Science certified. From “I like games” to “I can build one.”

  • Coding, robotics, AI & making
  • K–5 Math & ELA support
  • Everyday tech help for adults & seniors
Meet George Live All-Access
brb.
brb.
THE TOUCHLESS HALL PASS KIOSK

Mount an iPad on the wall by your door. Kids wave at it to sign out. Wave again to sign in. You stop getting interrupted mid-lesson to write down "Maya · bathroom · 10:47."

  • Touchless sign-out by hand gesture
  • Live face cards show who's currently out
  • Dashboard catches the frequent flyers
Try free for 14 days Preview All-Access
Morning Lab logo
Morning Lab
MORNING MEETING · 3K-2

Run morning meeting on the screen. Calendar, weather, daily greetings, and SEL routines for your littlest learners. Built warm and visual on purpose.

  • Calendar, weather, day-of-the-week songs
  • Greeting and SEL check-in routines
  • Free while in preview — try it tomorrow
Open Morning Lab Preview All-Access
SeatLab
CLASSROOM SEATING SIMULATOR

Plan your room before students walk in. Drag desks, set conflicts, hit Auto-Arrange. Save layouts for every section. Print or share.

  • Drag-and-drop room and desk layouts
  • Auto-Arrange respects student conflicts
  • Save and print layouts per class
Open SeatLab Preview
✏️ ✨ ⭐
Centers Lab
CENTER ROTATIONS · K-3

A pencil-shaped countdown timer at the top of the screen, sharpening as it ticks down. Sort kids into center squares — manually or random shuffle — with editable labels and photos.

  • Pencil timer (or switch to digital)
  • Drag students into centers, or auto-random
  • Photos + labels per center
Open Centers Lab Preview
⏱️ 🔔
Time Lab
SCHOOL-DAY PERIOD TIMER

A full-screen countdown for your class periods. Enter your bell schedule once (it stays on your device), then see the current period, time left, passing time, and an optional end-of-period warning chime.

  • Enter your periods once — saved on the device, never uploaded
  • Live current-period countdown + passing time
  • Optional chime + warning before a period ends
Open Time Lab Preview
🗝️
Escape Classroom
DIGITAL CLUES · LOCKBOXES · INVENTORY

Build a mystery. Hide codes around the room — paper, posters, anywhere. When kids find a code and type it in, they get a digital item. Use those items to crack open lockboxes for the next clue.

  • Code-to-item unlock system
  • Lockboxes with combinations or key items
  • Per-student inventory, syncs across devices
Build a room Preview
🧮
Manipulatives Lab
DIGITAL MATH MANIPULATIVES

Pattern blocks, fraction bars, two-color counters, coins, dice, spinners — all on one workspace. Drag, click, rotate, roll. Like Polypad without the menu fatigue.

  • 20+ digital math manipulatives
  • Drag, rotate, click-to-roll
  • Saves your workspace automatically
Open Manipulatives Lab Preview
Stock Market Lab
REAL PRICES · FAKE MONEY · ZERO RISK

A classroom trading sim with real stock and crypto prices. Hand each kid practice money, share a class code, watch them figure out portfolios, P/L, and risk. Great for math, economics, and SEL units on patience.

  • Real-time prices from Twelve Data + CoinGecko
  • Per-class leaderboard, full trade history
  • Test mode for solo practice — no Supabase needed
Open Stock Market Lab Preview
🎵
Music Labs
CLASSROOM AMBIENT MIXER

Layer rain, fireplace, ocean, café, crickets — set the work-time mood with overlapping ambient sounds. Each layer has its own volume. Generated live, no audio files to download.

  • 30+ ambient + music tracks (rain, fire, café, strings, piano)
  • Layer multiple at once with per-track volume
  • Bring your own audio file or URL
Open Music Labs
PC Builder
PICK PARTS · LIVE PRICE · BOTTLENECK SCORE

Drop in a CPU, GPU, RAM, storage, and case. Watch the price, power draw, and bottleneck verdict change live. Kid-friendly tiers from Starter to Dream Rig.

  • Four kid-friendly tiers per part
  • Live price + wattage + Power Score
  • Save, share, and remix builds
Open PC Builder Preview
S
SubSave
SUBSTITUTE TEACHER TOOLKIT

Plan a sub day in one pass. Emergency info, dismissal, lesson plans, and a one-day password — all on a printable handout. Lives on a USB drive so it works anywhere, even with no internet.

  • Flash to any USB drive in one click
  • Wizard walks you through sub-day prep
  • Emergency mode for last-minute, no-plans days
Open SubSave Preview
🗺️
MapLabs
A KID-SAFE WORLD MAP

A world map for the classroom — like Google Maps, but without ads, address searches, or street-view surprises. Tap a continent, country, or landmark to read a kid-friendly fact and hop straight to ResearchLab to dig deeper.

  • Curated continents, 25 landmarks, 15 cities, 24 animal-habitat maps
  • One-tap "research this" handoff to ResearchLab
  • OpenStreetMap tiles — no tracking, no ads, no surprise searches
Open MapLabs Preview
🧙‍♂️
Fact Wizard
YOUR SCHOOL'S APPROVED FACT LIBRARY

An elementary academic fact helper. Students ask about animals, science, math, art, reading, social studies, music, or coding — and Fact Wizard answers only from facts a teacher has approved. No guessing, no outside knowledge, no surprises. Sources shown with every answer.

  • Three pluggable LLM backends — Cloudflare Workers AI (free), Ollama, or any OpenAI-compatible API
  • Strict system prompt + input/output blocklists + rate limiting
  • Multi-turn memory so follow-ups like "tell me more" actually work
Talk to the Fact Wizard Preview
📚
ResearchLab
A KID-SAFE RESEARCH LIBRARY

140 teacher-vetted articles pre-loaded with the app — animals, space, history, science, geography, sports & music. No live searches reach the internet, and students can only open topics from the curated library. Teachers can edit any article in-browser.

  • 140 articles pre-loaded — zero runtime API calls, works offline
  • Teacher mode for in-browser editing + a reviewed/unreviewed flag per article
  • One-tap handoffs to MapLabs (places & habitats) and the Fact Wizard
Open ResearchLab
Explore the full toolkit →
Buying for a school or district? Volume pricing (typically 30–50% off), one PO per district, signed Data Privacy Agreement, SDPC + NY Ed Law 2-d documents on request.
Contact for district quote
Want to know when new apps land? Drop me a line and I'll email you when something new ships. No newsletter, no marketing — just a heads-up when an app is ready.
Email me when they launch
Built in a real classroom

Built by a working teacher.
Not by a boardroom.

Big Brain Labs is built by a working computer science teacher who needed faster, simpler tools for real school days. These apps are designed around actual classroom routines — not imagined workflows from a strategy deck.

🧑‍🏫
Teacher-built
🏫
Classroom-tested
🛡️
Privacy-conscious
🚫
No ads
🌐
Browser-based
⏱️
Made for busy school days
What teachers actually need

Fast. Clear. Simple enough for a sub.

Fast setup

Open the URL, go.

Clear routines

Designed around real classroom flow.

Simple student screens

Big buttons. No clutter.

No training marathon

Most apps explain themselves on first open.

Works on school devices

Chromebooks, iPads, school PCs — browser-only.

Easy to leave for a sub

Print a one-pager and walk out the door.

Why teachers trust Big Brain Labs

Built by a working teacher and used in real classroom routines. Public testimonials will appear here after moderated review.

🧑‍🏫
Built by a working teacher — used in a real classroom every day.

Big Brain Labs is made by Mr. B, a full-time K–8 teacher. Every tool is shaped by what actually works during a real school day — not a sales roadmap. No ads. No student-data selling. No venture pressure.

Every tool is included in one All-Access subscription — cancel anytime. Built by a working teacher · Used in real classroom routines · Public testimonials coming after moderated review.

✍️ Leave a review Moderated before publishing
Rating *

Reviews are read and approved manually before publishing. We never share your email; submit anonymously by writing "Anonymous teacher" if you prefer.

FAQ

The short, honest answers.

What is Big Brain Labs?

Big Brain Labs is a growing toolkit of simple classroom apps built by a working teacher. The lead product is brb. — a bathroom and hallway sign-out kiosk. One All-Access subscription unlocks brb. and every tool, with new tools included automatically.

Is this a subscription?

Yes — one All-Access subscription ($4.99/month or $39.99/year) unlocks brb. and every Big Brain Labs tool, with new tools added automatically. Cancel anytime. Master Scheduler (for school leaders) is sold separately.

Do students need accounts?

Most tools work without an account. A Big Brain Labs account is used for the brb. kiosk and any tools that need syncing across devices. Students never need accounts.

Is this safe for schools?

Designed to support FERPA, COPPA, and NY Ed Law 2-d compliance. Local-first by default — student data lives in the teacher's browser unless a feature explicitly needs cloud sync. No ads. No selling student data. A signed Data Privacy Agreement is available on request for districts.

Are all the tools finished?

Some tools are still in preview while we polish them. Preview apps are clearly labeled, and updates to a version you own are free.

Can my school buy this?

Yes. Schools and districts can request a quote by emailing support@bigbrainlabs.org. We support POs, signed DPAs, and W-9 requests.

Does it work on Chromebooks?

Yes — every app runs in the browser. No installs. Works on Chromebooks, iPads, school PCs, and personal devices.

Do you offer refunds?

There's a 14-day free trial, no card required to start. Full refund within 14 days of your first payment, and you can cancel anytime from your account.

From the founder

Real classroom problems, solved one at a time.

Big Brain Labs is a one-teacher software studio. I started it because every tool I was supposed to use as a teacher was either built by a giant ed-tech company that hadn't been in a classroom in twenty years, or some nightmare of pop-ups, ads, and dashboards that wanted to "track engagement."

Every app starts the same way: I notice something annoying in my own classroom — the clipboard kids forget to sign back in, the morning meeting that drags, the tardy log that never gets filed — and I build the tool I wish existed. I polish it until I'm proud to use it with my own students. Then, and only then, do I put it on the internet.

No engagement dashboards. No tracking pixels embedded in your students' photos. Just useful software that earns its keep by saving you time.

If you're a teacher and you want to test something early, I'd love that. If you find a bug, I'm the one fixing it. — support@bigbrainlabs.org

For admins & districts

Buying for a school or district?

Big Brain Labs apps run on the devices you already own and — for almost everything we make — don't transmit student data off the device. We offer institutional pricing for schools deploying to 10+ classrooms, signed Data Privacy Agreements (DPAs), and direct support during the school year.

FERPA aligned COPPA — school authorization model Designed to support NY Ed Law §2-d SDPC docs on request
Email us about institutional pricing

Read the full data-handling breakdown per app · Terms of Service

Follow along

Classroom clips, build logs, sub-day chaos, and what we ship next. Mostly TikTok and Instagram.

TikTok Instagram X r/BigBrainLabs
🧑‍🏫

You're a teacher

One All-Access subscription unlocks every classroom tool — $4.99/month or $39.99/year. Try free for 14 days first.

See pricing
🗂️

You're a principal or AP

See how Master Scheduler drafts your school's specials & common-prep rotation in minutes — or book a quick principal demo.

Master Scheduler for schools →
Book a 15-min principal demo