Hollow Fast

Hollow Fast is an intermittent fasting timer built around a single, elegant idea: a smooth animated ring that shows exactly where you are in your fasting and eating windows at any moment.

No accounts, no syncing, no subscriptions. You open the app, set your fasting schedule, and the ring starts counting. Everything is stored locally on your device.

The timer supports common fasting protocols — 16:8, 18:6, 20:4, and custom durations. The ring fills and drains in real time, giving you an immediate sense of progress without needing to read numbers.

The app ships with multiple color themes, including two light and two dark options, so it fits naturally into your home screen aesthetic. Navigation is clean and direct: one main screen, quick access to schedule settings, and nothing in the way.

Hollow Fast is designed for people who already know why they fast and just need a reliable, distraction-free tool to track it. There are no motivational prompts, no streak counters, no social features. Just the ring, the timer, and your schedule.

All data lives on your device. Nothing leaves it.