How a non-engineer built a bass fishing app | I didn't write a single line of code
A sudden flash of inspiration while getting a mugwort steam
I managed to get a mugwort steam two days in a row!
Perhaps it's because my body was warmed to the core and my head felt clear.
Today, for some reason, an idea suddenly popped into my head.
The topic jumps suddenly, but let's set that aside.
People who go black bass fishing seem to have a lot to do
before they go fishing, like checking the weather and looking up recent catches...
I feel like there's quite a lot to do.
No, I think the time spent researching is fun precisely because it's something they love, but
what if 'spot selection' and 'catch research' could be done all in one go?
I thought that maybe they could use more energy
on the time spent thinking about their strategy for the day, like what lures to use to attack the water.
Also, simply put,
I hadn't been doing any app development lately,
so I had an irresistible urge to try making one.
The 'lack of satisfaction' I felt with existing fishing apps
There were surprisingly many fishing-related apps. Ones where you can see the weather, ones where you can search for spots.
However, they all stopped at 'showing you information,' and
there didn't seem to be any that judgedwhere the conditions are best today (there is a possibility of insufficient research).
You never know if you'll actually catch anything until you try.
But if you could analyze the weather, temperature, wind speed, and latest catch information all together,
and see at a glance which spots have matching conditions,
I thought it might become a partner for planning your strategy.
What I made is a ranking app where AI judges the conditions
I dared to keep the functions simple, like this.
Select an area (Kanto, Kansai, Tohoku, etc.)
Press a button
AI automatically collects weather data and the latest catch information for each spot
Output spots with the best conditions in a ranking format (with suggestions for recommended lures)
I think I've created a pretty good tool, if I do say so myself.
I didn't write a single line of code. All I did was give 'instructions'
I'm not an engineer, so I can't write code.
All I did was
give instructions to Claude Code
saying, "I want you to build an app like this,"
and that was it.
I checked the prototype displayed on the screen and kept giving instructions to "fix this part a little."
It felt more like I was a development director giving instructions to an AI.
Plus, since it runs on a single HTML file,
there are no additional costs like server fees.
……Though there are API costs.
What AI is good at is "summarizing information and making it easier to choose from."
What I realized through this project is that
AI is great at "organizing information and presenting potential answers."
In the end, I decide where to go myself.
But just having it summarize vast amounts of information and
suggesting, "These are the places that meet your criteria,"
makes the decision-making process much easier.
I think this idea can be applied to various genres, not just fishing.
"There is so much data out there, but it's a hassle to decide which one is actually good."
I feel like situations like that are everywhere in daily life.
It's still a rough app, but
being able to steadily turn my "I wish I had this" ideas into small, self-made tools
is genuinely fun.
What should I build next?
I want to try solving other "daily hassles" using this approach.
Something like this
(To be continued)