The Tandem Mobi is one of the most talked-about insulin pumps right now, and there’s no better way to understand it than hearing from someone who’s lived with it day in and day out. That’s why this deep-dive conversation with Lissie Poyner—a longtime T1D, diabetes health coach, and former Omnipod user — offers invaluable insight into what the Mobi truly feels like after three full months of use.

Lissie didn’t just switch systems on a whim. Her transition from Omnipod to Mobi came from a desire for more customization, refined control, and a form factor that fits her lifestyle. Early in the conversation, she shares how the shift affected her daily diabetes rhythm and what surprised her most about adapting to a tubed—but extremely compact—pump.

Lissie and I touch on build quality, charging requirements, and what the filling process looks like in real life, and important factors for anyone considering the switch. Accessories also get a spotlight, including how she clips, carries, and integrates the device into workouts, work days, and everything in between.

The Tandem Mobi iPhone app earns plenty of attention as well, especially how it compares to other pump apps in the ecosystem. Its layout, responsiveness, and overall usability shape the Mobi experience more than people might expect. Beyond that, Lissie talks through alerts—how customizable they are and how well they fit into her routine—and dives into targets, profiles, and the system’s flexibility for different schedules and insulin needs.

We also get into the pros and cons of Mobi. Lissie highlights the control and convenience she loves, but she’s equally honest about the trade-offs that come with Mobi’s design and system behavior. That balanced perspective makes this discussion one of the most helpful user-experience breakdowns available for anyone evaluating their next pump.

If you're curious about whether the Tandem Mobi could work for your lifestyle—or simply want to see how it compares to Omnipod and other systems — this conversation delivers the kind of candid nuance that only long-term users can provide.

To dive deeper into every detail, check out both the full video below or listen to the episode above. They’re packed with insights that go far beyond what can fit into one article—and they’ll give you the clearest picture yet of what living with the Mobi is really like.

Disclaimer: Diabetech content is not medical advice—it’s for educational purposes only. Always consult with a physician before making changes to your healthcare.