Last updated: 2026-08-09
About this site
codinganyway is where one person puts the things they thought of and then built, plus the notes made while using them. It is not a company and there is no editorial team.
What's here
- Web apps — kakeru (a calculator that connects and visualizes) and others. All free, no sign-up
- A usage guide — how to work the app
- Worked examples — records of actually calculating something with the app. Currently Japanese only; see Languages below
The worked examples are notes, not a textbook
Worth being explicit about what those articles are. Each one is three things added together:
- A demonstration of the app — here is a calculation it suits
- My own learning — something I wanted to understand, so I looked it up and laid it out
- Sharing the result — since it exists, you may as well have it
So they are not written on the assumption that you apply them as-is. The figures are examples. What matters is that you check things yourself and rebuild or customize them for your own situation. That is why every article has a live board embedded in it: you can replace the numbers with yours and add or remove lines.
For money in particular, this is the whole point. Where you live, what insurance you hold, how many people are in your household, which year's rules apply — change any one of those and the number changes. Someone else's figures do not transfer.
How the articles are made (AI is involved)
No reason to hide it: the articles are written with AI (Claude). Though "having an AI write articles" isn't quite the shape of it. The order is:
- First, build the cost-item data — for a given event, every expense that hangs off it, enumerated. Currently 19 topics, roughly 380 items
- From that data, build the app template (the board's starting state)
- Only then write the article text
The order is deliberate: the value is less in the prose than in having the lines listed that you would never think of on your own.
There is a weakness worth stating plainly. The provenance of any individual figure cannot be fully traced. Where an amount is fixed by law or by a public scheme, an official source can be pointed to. Where it is simply "what things tend to cost" — a hotel's resort fee, an offering to a temple, a dog's grooming bill — no public statistic exists at all.
So the articles avoid stating things flatly and use ranges instead. "Budget somewhere around X" rather than "it costs X" is not a stylistic preference; it is meant to carry how certain the number actually is.
Numbers, and what gets linked
- Every amount is an estimate. Each article states as of when, and under what conditions
- Rules change. Rates, benefit amounts, and eligibility all move — check the official guidance before acting
- Sources are linked only to public institutions, never to companies. The businesses publishing cost figures are usually the ones receiving the money, which makes them a poor neutral source
- Where no public statistic exists, a loosely related document is not dressed up as a citation. As a result, articles openly mix "figures with a source" and "figures that are only a sense of the market"
- The lists of expenses are not exhaustive and never claim to be. If reading one makes you think "in my case there's also X" — that thought is the more useful output
Languages
The app and this site's guide pages are multilingual. The worked examples are Japanese only, because they are about the cost of buying a house, having a baby, or holding a funeral in Japan. Translating them would produce pages that read correctly and mislead completely. Math and science boards travel across borders in a way that tax codes do not, so those are what English examples will be built from.
Advertising
This site will carry advertising, on the reading pages only — never inside the app. It pays for running the thing. These lines hold:
- No advertiser influences the content. Nothing here is sponsored or written to order
- No steering toward particular products or services. Not linking out to company sites is part of keeping that line
- No ads inside the app. They would get in the way of the calculation
Cookie handling for advertising is described in the privacy policy.
Privacy
The apps published so far have no server. What you type stays in your browser, on your device, and is never sent to the operator. Since these are tools for personal numbers like a household budget, that is the design's backbone rather than a feature. It is a choice made per app, though, so a future one may not be browser-only — this page will say so when that happens. See the privacy policy for details.
If you spot an error
Wrong figures and out-of-date descriptions are worth fixing, and I would like to fix them. A contact channel is being prepared; it will be listed here once it exists.