Bobbi - Period informed womens fitness app

We're Saffron and Dhru, the founders of Bobbi, a cycle-informed fitness app built for UK women aged 18–30. So excited (and a little nervous!) to share this with you all! 💜 Why we built this: The idea for Bobbi started at a University of Sheffield innovation workshop, but the real spark came from something much more personal: training. I enjoy going to the gym, do reformer Pilates, and cycle regularly, and over years of tracking my own performance, the pattern was undeniable. My strength, energy, and recovery weren't flat across the month. They moved in a rhythm. But every fitness app I used treated every day the same, as if my body ran on a single fixed setting. That gap is the whole reason Bobbi exists. Mainstream fitness apps are still largely built around male physiology by default, and women are left to either ignore their cycle entirely or do the manual work of adapting plans themselves. We wanted to build the app that adapts with you, not despite your cycle, but informed by it. 💜 The problem we set out to solve: Generic training plans don't account for the fact that strength, energy, and recovery capacity genuinely fluctuate across the menstrual cycle. Most women either push through with a plan that isn't built for them, or quietly disengage from fitness apps altogether because the advice never quite fits. We wanted training guidance that actually reflects what's going on in your body that week. 💜 How our approach evolved We started lean: a small Sheffield-based waitlist, a free iOS launch, and a lot of direct conversation with early users about what was actually useful versus what just sounded nice in a pitch deck. That feedback reshaped a lot of our thinking, especially on content and community, where we realised women wanted to see the build as much as the workouts themselves, which is now a core part of how we show up online. We're still early, still learning, and still very much building in public. Would love for you to try Bobbi, and we're genuinely here for all the feedback — good, bad, and everything in between. 💗 — Saffron & Dhru