A shop
You write
“Write the descriptions for these twelve new products, in Japanese and English, in the tone of the ones already on the site.”
The assistant does
Twelve drafts, from your own pages and the supplier's sheet. You edit, you publish.
AI assistants for business owners and independent professionals · Tokyo
Hand the repetitive work to an assistant. Keep the decisions.
I come to your workplace and set up AI assistants around how you actually work: connected to your own documents, data and tools, saving only what you have agreed to. Then I follow up for 30 days: a check-in after one week, a review after one month.
30 minutes · No commitment · English, Japanese or French · Pricing quoted after the consultation
An example, one morning
You write
“Summarize this morning's emails, and put the ones that need an answer first.”
The assistant drafts
Twelve new emails, summarized in one line each. The three that need an answer today are at the top, each with a draft reply.
You decide
In this example, nothing is saved or sent until you approve.
- Set up on site
- 30 days of follow-up included
- Connected to your documents and tools
- You decide what gets saved
- English, Japanese and French
What eats the week
Most of what fills a week is repetitive.
- 01
The quotes and reports you rewrite
Same structure, new numbers, every time. The assistant drafts them from your own past documents. You check, you send.
- 02
The copying between tools
An order from a message, figures into a spreadsheet, a line into the accounting tool. Done for you, shown to you, saved only when you say so.
- 03
The question someone already answered last month
Your prices, your rules, your documents: answered in seconds, from your own files, instead of a search through old emails.
For a company, it means a small team covering more ground. For someone working alone, it means the paperwork stops setting the pace.
What an assistant can take on
Nine things an assistant can take on, at a desk like yours.
You don't need to know what AI can do. You ask in one sentence, the assistant does the work from your own documents and tools, and you approve before anything is saved or sent.
A workshop
You write
“Prepare the quote for this order, like the one I sent them in March.”
The assistant does
A quote from your past quotes and your price list, with the new quantities. You check, you send.
A bar or a restaurant
You write
“Here are this week's supplier invoices. Put them into the spreadsheet and tell me what changed in price.”
The assistant does
Every line entered, the price changes flagged. Saved when you say so.
A factory
You write
“Summarize this week's production reports and tell me where we lost time.”
The assistant does
One page, the three lines that cost the most, drawn from your own reports. You decide what to do about it.
A farm
You write
“Turn this morning's notes into Thursday's delivery run, and draft the message to each customer.”
The assistant does
A route, and one message per customer, ready to approve.
A practice
You write
“What did we tell this client last year about their lease? Find it in our files.”
The assistant does
The letter, the passage and the date, found in seconds instead of an afternoon.
Japanese paperwork
You write
“Read this letter from the ward office. What does it ask, and by when?”
The assistant does
A summary, the deadline, and a draft reply. You decide.
Month end
You write
“Prepare this month's invoices from the delivery log.”
The assistant does
The PDFs, drafted. Nothing goes out until you approve.
Any morning
You write
“Which invoices are unpaid past thirty days? Draft a reminder for each.”
The assistant does
The list, and one polite reminder per customer, in the customer's language. You send.
Not sure which task is yours? Bring your ordinary week. Finding the task is what the thirty minutes are for.
Book a free 30-minute consultationThese are examples, not client cases.
What I set up
An assistant that knows your business, running where you work.
Connected to your own files and systems
Your documents, your data, your tools. Not a chat window with nothing in it.
Configured around your real tasks
We start from what you actually do on an ordinary day, not from a demo.
How the pieces fit
- Your documents, data and tools
- The assistant, at your desk
- You approve what it saves.
How it works
Four steps, and the follow-up is the one that matters.
- 1Free
A free consultation, 30 minutes
You tell me the one task that eats your week. I tell you honestly whether an assistant can take it on, and what the setup would look like.
- 2On site
Setup, at your workplace
I come to you. We map your real tasks, connect the assistant to your documents and tools, and run it on your actual work, together.
- 3Included in every setup
30 days of follow-up, included
A check-in after one week. After one month, we look at what you actually use: what runs, what got dropped, what to adjust.
- 4Optional
Afterwards, only if you need it
A 90-minute consultation, billed per session. Or a 90-day maintenance package: three hours of corrections and a closing meeting.
Who you would be working with
I run my own company on these assistants.
Spring Theories is a one-person studio in Tokyo. I design and build web and mobile products, and I run the studio itself, its code, its documents, its paperwork, with the same assistants I set up for clients.
What I install is what I use every day. I know what it saves, what it gets wrong, and how to set it up so that a person stays in charge.
Julian
Founder, Spring Theories
Designer and developer. Flutter, Next.js and Firebase, from UI to release, for clients and for my own products.
An AI assistant for independent breweries: an order arrives by LINE or as one sentence, and it becomes a priced order for that account, reserves the kegs, plans the delivery route, and produces the month-end invoices in Japan's qualified-invoice format, as PDFs ready to send. You decide what it saves on its own and what waits for your approval.
The options
One setup. Then only what you need.
Setup with 30 days of follow-up
- Setup at your workplace
- Assistant connected to your documents, data and tools
- Check-in after one week
- A review after one month
Consultation, 90 minutes
- One session, billed per session
- For a new task, a new tool, a fix, or a question
Maintenance package, 90 days
- 90 days counted from the setup
- Three hours of corrections
- A closing meeting
After the consultation, I send you the options in writing, for your setup, before anything starts.
Your data
Your data stays yours.
You decide what gets saved.
The assistant drafts and proposes. You decide what it may save on its own and what waits for your approval; we write it down during the setup.
We list together what never goes in.
Before the setup, we write down what the assistant must never see.
It runs where you work.
In an app on your own computer, at your desk.
What I keep after a setup is small.
A description of the service rendered, the commercial documents and the follow-up dates. Never your data, never your documents.
Questions
The questions I get asked.
I have no technical background. Is this for me?
Yes. The people I set this up for run a business, a practice or a workshop, not a tech team. You describe your work, I do the setup, you approve what it does.
I already tried ChatGPT and stopped using it.
A chat window with no access to your documents and tools is a demo. What makes the difference is the connection to your own files and systems, the configuration around your real tasks, and the 30 days that make it stick.
Which tools do you use?
Built on Claude today; other assistants on request.
Do you work remotely?
The assistant setup happens at your workplace. Web and mobile development is done remotely.
How much does it cost?
It depends on the tasks and the tools involved. After the free consultation, I send you the options in writing, for your setup, before anything starts.
What happens after the 30 days?
Nothing, unless you ask for it: see the two options above.
In which languages?
English, Japanese or French.
Is my company too big, or too small, for this?
Neither. I set up one person or one team at a time, at their desks. The head of a two-hundred-person factory who wants an assistant for their own work is one setup. A larger company starts with the team whose week is fullest.
I don't know what an assistant could do for me.
Most people don't, and that is what the free consultation is for. Bring your ordinary week: the tools you use, where your documents are, what took your time last Tuesday. We find the task together, and I tell you whether an assistant can take it on.
Tell me the one task that eats your week.
Thirty minutes, free, no commitment. You leave knowing whether an assistant can take it on, and what the setup would look like.
Book a free 30-minute consultation30 minutes · No commitment · English, Japanese or French · Pricing quoted after the consultation
Prefer to write? I reply personally. hello@springtheories.io