Artem Grabowski is the founder, product designer and iOS developer of Completer, a simple habit tracker app for iPhone. Artem designs and builds the app and writes guides on building habits and getting the most out of Completer.
In 2026 Artem's life changed dramatically, and he had to rebuild it from the ground up. He wanted a better work-life balance, to quit drinking and smoking, and to replace those habits with ones that move him forward. Around the same time he read Atomic Habits by James Clear, and its idea that small, consistent actions add up to big changes became the way he approached it.
So Artem started tracking everything: walking and squash to lose weight, reading, sauna and massage to recover, and a few financial habits to build up different savings funds. What he needed was a habit tracker that felt like it belonged on the iPhone. It had to look and work like Apple's own apps, with Siri, Shortcuts and Spotlight support, Home Screen and Lock Screen widgets, a minimal design and quick actions, so completing a habit takes a second, not a minute.
Artem was inspired by HabitKit, a great app made by Sebastian Röhl, but wanted to shape every detail around his own vision and design principles. That's why he built Completer: the habit tracker he wanted to use every day, and one he hopes helps you build yours too.
