Tsuyoshi Niwa
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Tsuyoshi Niwa
jazz saxophonist, flutist & bass clarinetist

My first computer (NEC PC-8801mkII)

How I Started Coding

When I was a kid, I saw an ad on a train on my way to Judo practice, and it caught my attention. It was for a brand-new TV show called Pasokon Sunday (short for “personal computer Sunday”), which taught viewers how to create computer programs. The textbook for the show cost two months’ worth of the allowance my parents gave me. But the computer looked so amazing that I didn’t hesitate to run to a bookstore and buy it.

One weekend, my dad and I visited a small computer shop. Bug House Shibuya was an independently run showroom, and they had the same computer from the ad—meaning I could try everything I was learning. My dad negotiated with the owner, and I was given permission to use the computer for one hour a day.

That’s how I started programming. It was 1982, and I was 10 years old.

Fast forward to 2013, I began making mobile apps. All of my apps are “utility” apps—designed to solve problems quickly and help you be more productive. Most of the ideas came from my own needs, but I’m grateful that many users have found them helpful and offered feedback that inspired me to improve.

All of my apps are free to try for a month. To do this, simply subscribe to a monthly plan, then go to your app store account and cancel it right away. You’ll still have full access for the month. I believe that’s enough time to see if the app is useful for you. If not, you won’t be charged. If you like it, you can switch to a six-month or annual plan, which costs less.

notally

I personally use this app to track my daily expenses and income. But really, it’s a simple combination of a note-taking app and a calculator. It automatically detects all the numbers in your text and calculates the total. That makes it useful for budgeting, creating quotes, or anything else you can think of—it’s completely up to you.

MemoMa

MemoMa is a private timeline for your notes and photos. It’s perfect for jotting down personal thoughts and revisiting them alongside pictures taken on the same day. I use it to keep track of my health, practice sessions, travel memories, and daily journals.

Tabi Calc

If you often need to calculate time or currency conversions, this app is for you. It’s great for handling tricky calculations like total playtime, hourly rates, flight durations, and multi-currency conversions—all with ease. It also offers multiple memory slots, so there’s no need to jot things down or try to remember values.

 

Android version coming very soon…