We turn practical ideas into reliable technology
PB Lab is a focused technology studio. We design and build Android apps, IoT systems, home automation, and custom software — with an obsession for quality and simplicity.
Hi, I’m Prakash Bagchi
By profession I’m a finance professional with an MBA and 19 years in project accounting, budgeting and financial reporting. By passion I’m a maker. Since 2018 I’ve been building Android apps and ESP32 and Raspberry Pi gadgets, first for my own home and then for others.
PB Lab is where the two meet: apps people use every day like RadioBlink and Smart Shopping List, free calculators for money and business, and AI Prompts for Accountants, written from real accounting work.
When you work with PB Lab, you work directly with me, from the first call to launch and support.
Practical by default
We build things that solve real problems, not demos.
Fast & reliable
Clear timelines, tested delivery, and dependable support.
User-focused
Every decision starts with the person using it.
Experience that compounds
Started building Android utilities and custom tools.
Expanded into ESP32 & Raspberry Pi IoT projects.
Launched end-to-end home automation services.
RadioBlink, DayPilot and Smart Shopping List live on Google Play.