01 Fasting & nutrition
Atomic Fast
A daily companion for fasting and nutrition.
Track fasting, log meals and see patterns across your day. Atomic Fast brings these routines together, with personal analysis that runs on your device.

Founder & CEO, Startise

I'm Nazmul Hasan Rupok. I lead Startise, a group of software companies whose products reach more than 8 million people. I still build, write, and back founders who do the same.
For more than fifteen years I've built software for the way people work. Today that also means the small routines of everyday life: fasting and nutrition with Atomic Fast, and shared travel with TripMath.
I started as a developer, became a product maker, and now lead a group of companies. I still ship, I still write, and I invest in founders who build. More about me
01 Fasting & nutrition
A daily companion for fasting and nutrition.
Track fasting, log meals and see patterns across your day. Atomic Fast brings these routines together, with personal analysis that runs on your device.

02 Travel & shared expenses
Less trip math. More time together.
A simpler way to keep track of group travel expenses. Record spending in plain language, split costs across currencies and see who owes whom.

Part of the Startise group.
I'm CEO of each company here.

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