Toronto, Canada

We build apps, APIs
and everything behind them.

LunchBox ClassX (LCBX) is a Canadian software studio. We ship our own apps on Google Play — and we build private APIs, automation and full custom products for people with an idea and a deadline.

5In-house apps on Google Play
2In development
∞Things we'll build for you
Our apps

Download something useful today.

Small, focused tools that do one thing properly — no clutter, no dark patterns, no account required to get going.

AI Usage Meter app icon

AI Usage Meter

New on Google Play

Every AI subscription's limits on one screen, so you always know how much you have left — before you hit a wall mid-task.

  • Claude, ChatGPT, Gemini, Grok, Cursor and more
  • Live usage bars, reset countdowns and pace tracking
  • Home-screen widgets and custom alerts
Get it onGoogle Play
Did I Lock It app icon

Did I Lock It

Live on Google Play

That sinking feeling halfway to work — did I actually lock the door? Tap once when you leave and the answer is waiting for you, timestamped.

  • Doors, cars, gates, sheds — anything you lock
  • Reminders when you leave home or park the car
  • NFC and QR door tags, plus seven widgets
Get it onGoogle Play
Video Downloader LBCX app icon

Video Downloader LBCX

New on Google Play

Save the videos you're allowed to save and watch them offline — on the plane, on the subway, anywhere the signal gives up.

  • Spots videos on the page as you browse
  • Pick your quality, saved as MP4
  • Built-in player, ad blocker and private folder
Get it onGoogle Play
Tan Alert app icon

Tan Alert

Live on Google Play

Get the sun without the burn. Tan Alert watches the UV conditions where you are and tells you when to head out — and when to get in the shade.

  • Your best tanning window from the live UV forecast
  • Safe-exposure time and SPF advice for your skin
  • Reapply-sunscreen alerts and vitamin D tracking
Get it onGoogle Play
SynthAteBit app icon

SynthAteBit Retro Music Maker

New on Google Play

Describe the song you want and get real 8-bit game music back — written on an authentic emulation of vintage console sound hardware, then yours to edit note by note. Plays right here in your browser, too — no install needed.

  • A text prompt becomes a full multi-section chiptune
  • Piano roll and tracker views, plus USB MIDI keyboards
  • Export to WAV, MP3 or OGG for your game

View all LCBX apps on Google Play →

Coming soon

Two new titles in the workshop.

In development

Brawl Matcher

Our next app is in the build — and this one's launching on both platforms. Brawl Matcher is being designed to take the guesswork out of finding the right match-up. Full details, screenshots and the finished logo land here closer to launch.

  • Android
  • iOS
In developmentGame

Sky Divers Air Patrol

Sky Divers Air Patrol is coming to mobile, on Android and iOS. Full details, screenshots and gameplay will be added to this page closer to launch.

  • Android
  • iOS
Work with us

Got a project? We'll build it.

Our own apps are only half of what we do. LCBX is best known for powerful private APIs and scalable business tools — and we take on client work. If you can describe it, we can build it.

Custom & private APIs

REST or GraphQL endpoints, auth, rate limiting, docs and hosting. The kind of API your product can actually be built on — and the kind we're known for.

Mobile apps, end to end

Idea to Play Store listing: design, build, store assets, release and the updates after. We've done it for our own apps three times over.

Machine learning

Models that solve a specific problem — prediction, classification, analysis — wired into something you can actually use, not a notebook nobody opens.

Web & dashboards

Marketing sites, internal tools, admin panels and the reporting screens that make a business legible at a glance.

Automation & integrations

Stitch your tools together, kill the manual steps, and let the boring work happen on a schedule instead of on your evenings.

Anything else you need

Games, entertainment projects, one-off scripts, a rescue mission on someone else's half-finished codebase. Ask — the answer is usually yes.

How we work →

Tell us what you want built.

An app, an API, a tool that saves your team ten hours a week — send over the idea and we'll tell you honestly what it takes to build it.