I built a free Chrome extension for cycle tracking and would love some feedback from this community
Hey everyone! I've been working on a small side project called CycleSync — it's a free Chrome extension that tracks your menstrual cycle right from your browser toolbar.
I built it because I wanted something lightweight that didn't require downloading another app or creating an account. Everything stays on your device, nothing is sent anywhere.
What it does:
\- Shows your current cycle phase and day at a glance
\- Predicts your next period and fertile window
\- Lets you log mood, energy, flow and symptoms
\- Gives phase-based tips (e.g. when to push hard at the gym vs rest)
It's completely free and I'm actively improving it based on feedback. Just pushed an update this week that adds a proper setup flow so it actually shows your data from the first open.
Would genuinely love to hear what features would make this useful for you. Happy to answer any questions!