Built and used by one family, every day

One place for everything
your household runs on

Shared calendar, lists, pantry inventory — and the money stuff nobody wants to track by hand. Real tools for real households, made for yours too.

No credit card · Your group stays invite-only

Five modules live, one on the way

Groups
Calendar
Lists
Inventory
529 Tracker
Retirement

The modules

Real problems,
actually solved.

Not a roadmap and not a demo. Five of these are in daily use by the household that built it — Retirement Guardrails is the one still being built.

Groups

Invite family and friends into a household. Per-member colours, aliases, sharing rules and roles — plus messaging, so you're not coordinating in three apps.

Calendar

One schedule for the whole household, with recurring events, imports and per-member colours. Everyone sees the same week.

Lists

Groceries, packing, projects — checked off in real time, so the person already at the store sees what you just remembered.

Inventory AI-assisted

Know what's in the pantry and the freezer. Add and remove items by just telling the assistant what you used.

529 Tracker

Education-expense reimbursements that hold up to IRS scrutiny, with a parent/student approval workflow and year-end reporting.

Retirement Guardrails Coming soon

Risk-based spending guidance for the years after work — the kind of question a spreadsheet stops being honest about.

See it in action

Real screens, not mockups.

Captured from the app a real household is using today.

Grupiter shared calendar screen showing a week view with events — One calendar for the whole household

Grupiter shared lists screen showing a household grocery list — Shared lists, synced in real time

Grupiter inventory screen showing freezer contents — Pantry & freezer, AI-assisted

I built this for my own family — a shared calendar and lists that actually stayed in sync, then inventory so the freezer stopped turning into a mystery, then real financial tools once IRS paperwork and retirement planning got complicated enough that a spreadsheet stopped being enough.

It's still small and still evolving. If it looks like it would solve a real problem for your family too, sign up below.

Matt, who also does the grocery run

One place for everythingyour household runs on

Real problems,actually solved.