We build small software that does one thing well.

Huygen Labs is a one-person studio, shipping narrow and honest tools for the jobs big software somehow makes harder.

Studio
One person
Live
Heartkeep Android
In preview
BillVoc Android
Next
On the bench no waitlist

Small tools, in the wild.

Everything here is a micro SaaS: one job, priced honestly, built to be understood the first time you open it.

  • Heartkeep

    A daily check-in for the relationship you are keeping.

    Quiet rituals, streaks and weekly insights for one person who wants to show up consistently — not a diary, a practice.

    Live Android

    Visit heartkeep.me
  • BillVoc

    Quotes and invoices, made on site.

    Offline-first billing for electricians, plumbers and repair techs: quote to invoice in a tap, track what is owed, and share a PDF with no signal.

    In preview Android

    See BillVoc
  • Something small, next

    We are tinkering on the next narrow tool. There is no waitlist and no countdown — it ships when it is genuinely useful.

    In the lab

    Email us an idea

Narrow on purpose.

Small on purpose
A micro SaaS does one job. We would rather ship a tool you understand in a minute than a suite you need a demo for.
Built for one person
Our products are for solo users — a tradesperson on a job, a partner keeping a small promise — never a committee.
Honest by default
No fake urgency, no dark-pattern checkout, no holding your data hostage.
Said plainly
Every product explains what it collects and where it lives, in language you can read without a lawyer.

Idea to store, in three steps.

  1. 1

    Find the narrow job.

    Something done every day, usually on paper or in a spreadsheet, that a big suite somehow makes feel harder than it is.

  2. 2

    Build the smallest useful version.

    No accounts, no cloud, no setup unless the product genuinely needs them. It should be useful in the first minute.

  3. 3

    Ship it, then improve it.

    Out to the store, then watch how people really use it and grind down the sharp edges.

Have a job that deserves a small tool?

Tell us what you do all day and what still lives in a spreadsheet — that is usually where the next product starts.

Email huygenlabs@gmail.com

One person, a handful of products, no agency retainers.