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Jay — The ErmiteDigital Tuner

I tune digital tools to people, instead of tuning people to tools.

Because when a tool doesn’t fit you, you may believe the problem is you.

It isn’t necessarily you.

In practice, I adjust digital tools and organisation to fit the way you work. For one person, a team or an organisation.

Jay, arms crossed, smiling, on a terrace facing the mountains
Jay. Based in Spain, he works in French, English and Spanish.
What I can bring you

Three frictions I know how to fix

I don’t put you in any box. I look at what’s stuck, and I tell you what I see, even when it’s uncomfortable.

A tool

You adapt to a tool that doesn’t fit you.

You call it discipline. Often, it is a poorly configured tool you make up for every day, and pay for in energy.

What I bring

I fix its settings, or I build the one that fits you.

An organisation

Something is stuck, and you can’t see where.

Normal: you are inside it. What can’t be seen from the inside is very clear from the outside.

What I bring

I look, I tell you what’s holding you back, and we decide together what is worth changing.

A path

You want to move forward, but your way.

Nobody will walk the path for you. Not me either. What I can do is help you stop walking in someone else’s shoes.

What I bring

I walk alongside you, without fitting you into a model.

How we work together
Proof, not promise

What I’ve built since November 10, 2025

Figures read from GitHub on September 25, 2026

306days I builtIncluding 188 days in a row, without a break.Consistency
16,207commitsEach commit is a recorded, dated change.The pace · across 70 projects
~41,000automated testsChecks that verify on their own, at every change, that nothing broke.Verified quality
10 + 1applications built and in useTen tools that actually run, and one platform built for a client.The result

I’m not a developer. I design, I decide, I verify. AI writes the code under my direction. Nothing ships without automated tests, security checks and an independent review.

Most of these projects are private. The figures come from my account and my two organisations, archived repositories included. Automatic backups and other authors’ work are removed.

The method behind it

Michi no Kata, the Way of Form

These figures don’t come from talent, they come from a method. Michi no Kata carries the same demand for mastery in everything I do.

  • Code
  • Gaming
  • Coaching
  • Business

And Monozukuri, the Japanese art of making: quality isn’t a step, it is in every gesture. Every change to my tools is tested, checked and reviewed before it ships.

The method in detail
The form is simple; what produced it is invisible.
What you use stays clear. The complexity works behind you, not in front of you.
The what converges. The how adapts to the person.
Principles are universal; how you apply them is yours. That is the whole point of a tuner.
Where I’m going

Shinkofa, my answer to life’s frictions

Every tool imposes a single way of being, the same for everyone. Shinkofa builds the opposite: technology that adjusts to you.

It starts with a browser, free and open: the one you already use every day. It carries what you need for a normal day, without trying to keep you longer than necessary, or to sell your attention.

What the browser already does

Shinkofa is under construction, and already real. Today, it:

  • blocks ads
  • tidies your tabs
  • suggests breaks
  • times your work
  • tracks your energy for the day

Every ticked feature has been seen running. The next ones arrive as they come, with no promised date.

Discover Shinkofa on shinkofa.com
The Shinkofa browser: new tab with a crane in flight, the logo and the search bar
New tab of the Shinkofa browser, torii under the moonNew tab of the Shinkofa browser, bamboo scenery
The workshop

Tools born from a real friction

I build for myself first. If it holds in my life, it can hold in yours.

Kobo

Personal tool

Fifteen tools open for a single working day.

My workshop brings together in one place conversations with several AIs, content creation, video editing, social publishing, the calendar and client follow-up.

In use every day2,376 commits~10,000 tests

The Koshin Assistant

Personal tool

A list of overdue tasks that makes you feel guilty first thing in the morning.

My phone assistant, by voice or text. It opens on "right here, right now": one thing suggested, not a list. The word "overdue" exists nowhere.

Android app239 commits~600 tests

And also

Hibiki home page
Hibiki
Kakusei home page
Kakusei
Shizen home page
Shizen
Hoso screen on a phone
Hoso
The whole workshop, and the dormant projects
Who’s behind it

I don’t promise to be right. I promise that what I say will be useful.

I say what I see, once. Sometimes it’s uncomfortable. Agreeing with you wouldn’t help you, and I’d rather hand you back your part than pity you.

PerspectiveThe journey
24 yearsof graphic design
21 yearsof entrepreneurship
Over 13 yearsof coaching
126scientific studies in my knowledge base, drawn from 4,254 sources
Latest writing

What I observe, in black and white

All articles
If this speaks to you

Let’s talk about what’s stuck for you.

No chasing, no countdown. If it doesn’t speak to you, it doesn’t, and that’s perfectly fine.

Book a call

Or simply follow where I’m going:

  1. A first conversation, freeYou describe your situation. We see whether I can help, and whether we can work together.
  2. A quote, made for youIf we continue, a quote tailored to you. No price grid, no imposed package.
  3. We move forwardConsulting, building or coaching: what your situation calls for, no more.