FastNow app — fasting, calorie, walking, and weight tracking

Twelve built-in schedules from 12:12 through 23:1 (OMAD), plus a custom window in one-hour steps. Start fasts manually after your last meal, or lock the eating window to fixed daily clock times that cycle automatically. A timer shows elapsed and remaining time, current phase, your eating window, and a running count of days you have kept the cycle going — all backed by a 30-day session history.

Sessions from 24 up to 168 hours (one to seven days). Quick-select presets for 48h, 60h, and 72h, or set any length on the slider. Already underway when you open the app? Backdate the start by up to the fast length minus an hour. Past the first day, the screen surfaces hour-by-hour stage content from our fasting library and calls out ketosis, autophagy, and fat-burning milestones as you pass them.

Manual daily weight entry with kg or lbs display. Entries within the last 24 hours are editable inline. History loads in 7, 30, or 180-day windows with a load-more beyond. Goal weight is editable inline and syncs to your active 90-day journey so daily calorie and burn targets stay aligned. Show Empty Days highlights gaps. Calendar view lays the month out visually. A deep link opens the add-weight modal from anywhere in the app.

A manual timer-based tracker — tap Start when you begin walking, set your pace from the speed selector, and the timer counts up. Pause and Resume preserve elapsed time when you stop for a traffic light or a call. Before saving, Manual Duration lets you correct the elapsed time if the timer was left running. Daily step and distance goals live in your profile. The 7-day stats card shows the week at a glance. Log Other Activity covers workouts that aren't walks.

Manual meal entry with a growing My Foods library, reusable meal Templates, and a Suggested list of what you logged recently. Your daily calorie target sits at the top of the day with live remaining calories as you log. Carbs are always tracked; protein and fat toggle on from your profile if you want full macros. Copy Yesterday in one tap. Edit any logged meal's calories inline. History keeps 30 days by default with load-more beyond.

Pick a challenge duration from 30 to 180 days — fixed, not adaptive. Set your start weight, goal weight, daily calorie target, and daily burn target. The dashboard shows Day X of Y with a progress bar, countdown, and projected end date. Food, walking, and weight entries auto-aggregate into each day's card in the timeline. Goal weight is editable mid-challenge and recalculates daily targets. Completed challenges can be reactivated within 24 hours, or scheduled to start on a future date.