Private beta — invite only

Modular apps for people whose workflows don't fit a SaaS template

Build the app
nobody can sell you.

Track your stuff. Plug in the bits you need — inventory, locations, labels, machines, schedules — skip the bits you don't. Then wire them together so they actually talk. No code.

We cobbled this together because nothing else fit. Turns out a lot of people have that problem.

× ×
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Scan your house
Garage · Bin 17
Cordless drill · ✓ in stock
Spare blades ×4 · ✓ in stock
inventorylocationsqr

Better than a home-inventory app — on this combo alone.

It's all the same app in a different costume.

A skein of yarn. A brake caliper. A jar of spices. Every app that tracks them is secretly the same app — a list of things, with fields, units, and photos. The only real difference is the costume, and store-bought apps come dressed in someone else's.

The stash
Cascade 220 · 6 skeins
Worsted · dye lot K2204
dye lotweight class
The parts bin
Brembo caliper · ✓ in stock
Front left · torque 28 N·m
torque specfitment
The spice rack
Smoked paprika · running low
Tier 2 · slot 5
rack slotcap color

Same row. Three costumes. That's the whole trick.

So the perfect niche app you can't find isn't missing — it just isn't dressed yet. Cobblr hands you the plain list and you dress it yourself: a dye lot on the yarn, a torque spec on the caliper, a rack slot on the spice jar. That takes an afternoon, not a developer.

Pick any single-purpose app. Cobblr is that — plus everything it can't do.

Every one of these is a real, working app built by cobbling pieces together. Shipped & tested

Better than a home-inventory app
Scan your house
Garage › Workbench › Bin 17
Cordless drill · warranty ✓
Stand mixer · insured
inventorylocationsqr labels

Print a sticker for every bin, scan it with your phone, see what's inside. Then it tracks warranties, schedules the maintenance, puts it on your calendar, and shares a read-only view with your insurer. Same sticker.

Shipped
A workshop that runs itself
Shop floor
Voron 2.4 · printing
GT2 belt · ⚠ low stock
Rails relube · due in 5 days 📅
Stealthburner mod · 3 tasks
machinesmaintenanceprojectspartsprint farm

Your whole fleet, the builds in flight, the parts they eat, and the upkeep each machine is due for — and it sends jobs to the printers and throws a live status board on the wall. The app that runs a 30-machine shop.

Shipped
A household off sticky notes
The kitchen
Milk · 0 left → 🛒 list
Grocery spend · $312 / mo
▇▅▃▁ Trending down
pantryshopping listspending

Run out of milk → it's on the list. Check it off → the fridge refills. A grocery order arrives → it logs the spend on a chart that trends like a fitness goal. Three things that never heard of each other.

Shipped
Your collection, shareable
The collection
UCS AT-AT · 6785 pcs · built
Millennium Falcon · sealed
🔗 Public wiki · prices hidden
inventory27k-set catalogcamera

Scan a box — the catalog fills in the name, photo, and year. Share a read-only wiki with friends: photos shown, what you paid hidden.

Shipped
The garage
My garage
Honda Civic · 48,230 mi
Oil change · due in 4 days 📅
Brake pads ×2 · ✓ in stock
carspartsmaintenancecalendar

Log a repair you did yourself — it decrements the parts you used from stock. The next service lands on your calendar before it lapses.

Shipped
An app for your group
Lego club · member view
Build Tracker · 4 to build
[ Mark built ] ← Mia tapped
Themed · members log in
any domainapp playermembers + roles

Members log into a themed app you built — with the buttons you chose and the permissions you set. Not a spreadsheet. A university Lego club runs on this.

Shipped · beats a no-code app builder
Plant care
Fiddle-leaf fig · zone 2 · every 7d
Monstera · zone 1 · due today 💧
→ Home Assistant · run zone 90s
The garden waters itself
plant carerecurrencedigifabhome assistant

Each plant knows its zone and how often it drinks. When one's due, Cobblr tells Home Assistant to run that zone for the right number of seconds — Cobblr decides, your controller opens the valve. The to-do list that commands a sprinkler.

Shipped · talks to Home Assistant

The magic isn't the lists. It's what happens between them.

The part a spreadsheet — or any single-purpose app — never could. A connection is a sentence you click together:

You never have to touch these. But the day you want milk to add itself to the list, it's three clicks — not code. And a few of them add up fast:

01

The self-restocking fridge

Milk hits zero → it's on your shopping list → you check it off → the fridge count goes back up. No code. Two clicks to set up.

02

The bridge nobody designed

A $4.50 grocery order arrives → it restocks the milk and logs $4.50 onto a "grocery spend" chart — even though groceries and spending are two separate pieces that never knew about each other.

03

Type two words, get a catalog

Type "millennium" → pick 75192 — Millennium Falcon → name, image, year, and theme fill in from a database of 27,000 sets. Adding inventory is a search, not a form.

Cobblr is the brain.
Your machines keep their hands.

Cobblr doesn't drive your 3D printer or flip your lights — that hardware already runs its own software. Cobblr is the layer above it: it decides what and when, keeps the record, and sends the command to whatever does the work.

That boundary is the whole point. It's why your to-do list can send a job to your printer — and why your plant collection can water its own garden, each plant on its own schedule. One brain over all your disjointed systems.

Isn't this just a spreadsheet or a notes app?

Those are a database and a doc that you turn into an app by hand. A spreadsheet can't print a QR label, scan a barcode, put a date on your calendar, or send a job to a machine. Cobblr does all four — they're modules, not formulas.

Isn't this just Home Assistant?

Opposite ends. Home Assistant runs your hardware in real time; Cobblr is the system of record above it — what you own, what it needs, what's scheduled — and it talks to Home Assistant to send commands and read data. They pair; they don't compete.

Isn't this just another single-purpose app?

Each of those is one point. Cobblr is the one tool that becomes any of them — and then connects them. You don't install five apps that don't talk; you cobble together one that does.

Too complicated for me?

Not if you start with a flagship bundle. Pick what you care about — Yarn, Home inventory, Pet care — and one click sets it all up: the right fields, the right units, and a saved view, pinned. Pick "Yarn" and you get colorway, fiber, weight and dye lot, "brand" and "price per skein" already relabelled, and a "My yarn stash" view grouped by weight class — in under a minute. Add your first skein and you're set. Power is opt-in; most people never touch a wire.

You've been faking this in a spreadsheet.

Or start from a bundle.

More than a dozen ready-made templates for the usual stuff. One click installs the fields, the units, and a pinned view — you're adding your first item in under a minute.

Install adds only what the bundle brings; uninstall takes only that away. Anything you customize on top stays yours.

Or skip the picking entirely (bring your own AI)

Just describe it.

> Track my houseplants — species, where they live, how often to water, and remind me
Plant care
Fiddle-leaf fig · bright indirect · every 7d
Snake plant · low light · every 14d
📅 Next watering scheduled

Type that, and your AI writes the bundle — one page of JSON that sets your fields, units, and a view. Not an app full of code; a template Cobblr reads.

Your AI builds it. Cobblr verifies it — every line checked before it lands in your workspace. Still no code you write. Bring your own AI key; Cobblr doesn't host one.

Three pieces. No code in any of them.

  1. 1
    modules

    Pick your blocks

    Turn on what you need — inventory, locations, labels, machines, schedules — ignore the rest. Or describe what you track and let your AI pick.

  2. 2
    bundles

    Dress them up

    Add your own fields, units, and views. A "dye lot" on yarn, a "rack slot" on spices, a "warranty expires" date that lands on your calendar.

  3. 3
    wires

    Wire them together

    When stock runs low → add it to the list. Click the sentence; it runs itself from then on.

Private beta · invite only

Build the app you've been wishing existed.

It probably doesn't exist because it's yours. We're letting people in a few at a time — drop your email and we'll reach out.

No spam, no charge — just an invite when a spot opens. Browse what people built while you wait.