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yesterdid

For service businesses without an AI team

Start with your business,
not with AI.

We take out the manual work and bring what now sits in a few heads together in one system. Faster forward, and what we build stays yours.

Book a first conversationSee what we built
Short animation: the sun sets and the room goes dark. You pull a cord and a lamp comes on. In the light you see what you did yesterday, one job gets its real steps side by side, a few steps disappear and the rest get smaller and faster. Lights come on along the route, the sun rises and the name appears: Yesterdid.

Trusted by experts and companies without an AI team

  • Van Lith SchildersPainting company
  • De VeranderkamerVR training & coaching
  • Krull E-commerceE-commerce
  • Lucky DuckRestaurant in Amsterdam
  • Brand BoekhoudersBookkeeping firm
  • BAX advocatenLaw firm
  • BOMPublic investment company

Building commercial & operational processes

Sound familiar?

You know AI matters. But it never gets off the ground.

Different stages of the same pain. We pick up wherever you are.

  1. I don't know where to start.

    Picking the right thing to build first isn't the same as picking a tool.

  2. I built something, but it wasn't what I wanted.

    Used twice, then forgotten. An experiment, not a system my team relies on.

  3. I started building, but it got too complicated.

    I have the business knowledge. I don't have the technical depth to take it to production.

  4. Everything is still in one head.

    How things run and who knows what sits with a few people. When they're not around, everything stops.

How it works

First see what's possible. Then work faster.

As long as you can't see where the time goes, AI is guesswork. So first we work out together where the manual work is. Then we build what solves it, and after that your team carries on with it themselves.

  1. See where it sits

    We work out together where the manual work is and what you solve first.

    • First conversation
    • Discover

  2. Build what works

    We build it for you or with you, and set up the team that carries it.

    • Have it built
    • Build it together
    • Your own AI team

  3. On your own, faster

    Your team carries on with it themselves. We keep you up to date with what's new.

    • Keep up

Faster forward, and what we build stays yours.

See the services

How we build.

Four principles that shape every project. They're why the work moves fast, and why it actually ships.

  1. Speed is a feature.

    Whoever does the discovery also builds: no handoffs, no translation layers. You touch something real in week two.

  2. Smallest end-to-end first.

    Ugly but useful beats polished and partial. We ship the thinnest possible full loop first, then iterate against the definition of done.

  3. Redesign, don't automate.

    Applying AI to existing workflows gets marginal gains. We redesign around what's now possible, and the planning is where the real build happens.

  4. Build with, not for.

    You stay in the driver's seat. By the end you own the code, the data, and the playbook.

Compare

You really have three choices.

Do nothing, buy something, or have it built. Here's how they play out.

Do nothinguntil your competitor doesuntil your competitor does
Buy somethingChatGPT, Claude or Copilot or off-the-shelf software: 80% of what you need, and you rent it80% of what you need, and you rent it
  • ChatGPT, Claude or Copilot
  • off-the-shelf software
Have it builtfreelance expert or AI agency: slow, and rarely your wayslow, and rarely your way
  • freelance expert
  • AI agency
Yesterdida first version fast, and yoursa first version fast, and yours
Something working, fast
The problem moves to next year.
ChatGPT, Claude or CopilotToday, for one person and one small task. That's where it stays.
off-the-shelf softwareSoftware that solves one thing. Fast when it fits; the missing 20% takes most of the time.
freelance expertA fast start, then it stalls.
AI agencyWeeks to months, in their process and their calendar.
A first working version fast. Then a round every week.
Fits how you work
Everything stays as it was, by hand.
ChatGPT, Claude or CopilotA chat window. The process around it stays manual.
off-the-shelf softwareBuilt for many companies at once. You adapt to the product.
freelance expertPossible, but nobody checks the AI part.
AI agencyTheir way, not yours.
Built on how you already work, checked, and honest about what it can't do.
Someone who knows your business
You and your colleagues, as now.
ChatGPT, Claude or CopilotNobody.
off-the-shelf softwareA helpdesk.
freelance expertOne person, when they're available.
AI agencyAn account manager, then handoffs.
One person who knows your business, at the table, from the first conversation to the build.
Honest advice
ChatGPT, Claude or CopilotGives no advice.
off-the-shelf softwareThey sell what they have.
freelance expertTakes the job.
AI agencySells the programme.
If it isn't a good plan, or can't be maintained, we say so. Even when the answer is 'don't build'.
Helps where you are
ChatGPT, Claude or CopilotYou're on your own.
off-the-shelf softwareOne fixed offer.
freelance expertTheir skills, not your situation.
AI agencyTheir process, not your starting point.
Build for you, build with you, or coach your own team. Whatever fits where you are.
Yours afterwards
ChatGPT, Claude or CopilotPer person, per licence.
off-the-shelf softwareRented. Stop, and it's gone.
freelance expertOften unclear where it runs and who owns the code.
AI agencyOften theirs. You stay dependent.
Yours, in your own environment, documented. It keeps working without us.
Start small, stop any time
ChatGPT, Claude or CopilotA licence. You can always cancel.
off-the-shelf softwareUsually a one-year contract. You can cancel, but then it's gone.
freelance expertYou can stop, but you're left with something half built that nobody understands.
AI agencyYou're tied to a programme.
One small first build that is yours whatever happens. After every round you can stop.
See the extended comparisonShow the short version
  • Does a product really fit? Then that's often the best choice, and we'll say so.
  • Would you rather just talk about what you could do? Hire a consultant.
  • yes
  • sometimes
  • no

Not our words, theirs

What clients say

  • Angela TalenOwner, De Veranderkamer

    De samenwerking voelde vanaf dag één persoonlijk en energiek. Snel schakelen, meedenken vanuit onze praktijk én direct iets werkends neerzetten. Daardoor ontstond niet alleen een goed product, maar ook echt vertrouwen in het proces.

    Translated from Dutch: From day one the collaboration felt personal and energetic. Fast iterations, thinking along with our practice, and shipping something working straight away. That created not just a good product, but real trust in the process.

  • Thomas van LithOwner, Van Lith Schilders

    Tom levert wat hij belooft en is eerlijk als hij iets niet zeker weet. Na het eerste succesvolle project, kwamen wij met een nieuw vraagstuk bij hem terug dat we beiden niet goed kenden. Samen hebben we gezocht naar de goedkoopste manier om veel en snel te leren zonder grote risico's. Precies wat we nodig hadden.

    Translated from Dutch: Tom delivers what he promises and is honest when he's not sure about something. After our first successful project, we came back to him with a new question that neither of us knew well. Together we looked for the cheapest way to learn a lot, and fast, without big risks. Exactly what we needed.

  • Douwe Kruyt & Dees van der PollFounders, Krull E-commerce

    Tom heeft ons precies het handvat gegeven dat we nodig hadden om meer te leren over alle AI oplossingen die relevant voor ons waren. Met zijn hulp zijn we in 1 dag klaargestoomd om al onze bedrijfsprocessen enorm te versimpelen of volledig te automatiseren.

    Translated from Dutch: Tom gave us exactly the handle we needed to learn more about all the AI solutions relevant to us. With his help, we were ready in a single day to radically simplify or fully automate all of our business processes.

  • Bas HuijgensOwner, Lucky Duck

    Tom heeft ons in een kort tijdsbestek door onze rebranding heen geholpen met een nieuwe site én onze Google-reviews geautomatiseerd. Wat ons vooral bijblijft: hoe makkelijk hij het maakt. Snel, geen gedoe, en wij konden gewoon doorgaan met onze zaak runnen.

    Translated from Dutch: In a short window Tom helped us through our rebranding with a new site and automated our Google reviews. What stuck with us most: how easy he makes it. Fast, no hassle, and we just kept running our business.

Tom Teurlings, founder of Yesterdid

Who's behind it

Hi, I'm Tom.

I run Yesterdid, called TT Tech until 2026. Over the past years I built AI systems, including two years inside a B2B SaaS start-up where I shipped a real product. I now bring that capability to companies without an AI team.

I do the discovery, I write the code, I sit at the table. Just me, plus a small bench of trusted partners when a project asks for it. Fast, personal, honest. I only take on projects I believe in. Building something together that makes you and your team work better: that is what I do it for.

Tom on LinkedInformerly TT Tech

Frequently asked questions

How long does a project take?

First working version within 2-4 weeks. Real impact visible in 6-8 weeks.

What if my idea won't work?

We'll tell you. Honesty is a written brand rule, not a marketing line. Together we'll find what does work.

When are you not the right partner?

If you're looking for a large adoption programme for hundreds of people. If you want a package that runs tomorrow without anyone in your company willing to carry it. Or if existing software does it better: then we'll say so.

Do we own what we build?

Yes. It runs in your own environment, it's documented, and it keeps working when we're gone.

Can you build with our existing stack?

Yes, we work with your existing systems. Most of the time it comes down to making sure the system actually works, then building a layer on top. Everything is bespoke.

Where does our data live?

We pick the simplest setup that works for your data. If it asks for more care, such as EU-only storage and processing or stricter handling, we set that up.

Do you train on our data?

No. It's the "Single Rule" in our terms and conditions, article 6.4: shared platform components train only on synthetic, independent or fully anonymised data. Your data is used exclusively for your engagement.

What does it cost?

The first conversation is free. Discover is a paid day that we deduct if you build with us afterwards. After Discover you know exactly what the build costs, before you decide anything.

Why does it feel personal?

Because whoever does the discovery also builds and sits at the table. When a project needs more hands, we bring in trusted partners we've worked with before, never strangers.

What will you still be doing by hand tomorrow?

30 minutes. Afterwards you know what to take off your plate first. And if building isn't the answer, you'll hear that too.

Tom TeurlingsYou talk to Tom directly, not to an account manager.

Book a first conversationEmail us