Burn: Fasting & BMI Tracker
Track fasting, weight, and streaks — privately
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Burn: Fasting & BMI Tracker - Track fasting, weight, and streaks — privately

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Burn is a clean, private intermittent fasting tracker. Start a fast and a live flame ring fills toward your fasting goal - anywhere from 12 to 48 hours, your choice - showing your projected end time and the metabolic phase you're burning through - from fat burning to ketosis to autophagy. Keep your streak alive, watch your weekly hours add up, and chart your weight and BMI over time. Everything stays on your device.

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I started intermittent fasting to lose weight, and every tracker I tried felt like it was working against me — cluttered dashboards, ads interrupting a simple timer, subscription walls just to see a ring fill up. I wanted something that did one thing well: show me exactly where I was in my fast, without the noise. So I built Burn for myself first. A live flame ring that fills toward your goal, clear metabolic phase labels so you know what your body's actually doing, and a weight trend chart to see if it's working — all stored on your device, no account, no cloud. It worked. I've used it through my own weight loss, and it's now the app I actually open every day instead of dreading. Turning it into a $0.99 one-time purchase (no ads, no subscription) felt like the only honest way to share it.

Love the privacy-first approach and the metabolic phase breakdown is a really nice touch. One thing I'd love to see is a gentle notification when you cross into the next phase, like a quiet buzz when you shift from fat burning into ketosis. It'd make those milestones feel earned instead of something you have to open the app to discover.