Zero tracks your fasting window. That's genuinely useful. But knowing when you fasted is not the same as knowing what fasting is doing to your sleep, mood, energy, and weight. tr8ck tracks the whole picture.
Join Free WaitlistNo credit card. Free during beta.
Zero has a clean UI, a good streak system, and it does its one job reliably. It also includes some educational content about fasting protocols. The limitation is that fasting doesn't happen in a vacuum — it interacts with your sleep, hormones, nutrition, and mood. Zero doesn't see any of that.
| Feature | Zero ~$9.99/mo | tr8ck Free beta |
|---|---|---|
| Fasting window timer | ✓ Core feature | ✓ Full module |
| Fasting streaks & goals | ✓ Yes | ✓ Yes |
| Educational content | ✓ Articles & videos | – Focus is data, not content |
| Sleep tracking | ✗ No | ✓ Full module |
| Mood tracking | ✗ No | ✓ Full module |
| Nutrition tracking | ✗ No | ✓ Full module |
| Cycle tracking | ✗ No | ✓ Full module |
| Medication / GLP-1 tracking | ✗ No | ✓ Full module |
| AI cross-metric insights | ✗ Generic tips only | ✓ Personalized AI |
| Price | $9.99/month | Free (beta) |
Intermittent fasting changes when you eat — but it ripples into your sleep architecture, cortisol, energy, and mood in different ways for different people. tr8ck tracks all of it so you see what your fasting protocol is doing to your body specifically.
Does extending your fast improve your deep sleep? Some people see dramatic improvements. Others don't. tr8ck shows you your personal pattern — not generic advice.
Log your fasting windows alongside your weight. tr8ck shows whether your chosen protocol is moving the needle for your body, across weeks and months.
Does fasting make you irritable in the morning or clear-headed by noon? Your mood data tells the story that Zero's timer never captures.
Many people on GLP-1 medications naturally extend their fasting windows because appetite is suppressed. But GLP-1 drugs also affect your energy, sleep, and mood in ways that interact with your fasting protocol. tr8ck tracks your medication dose alongside your fasting window and wellbeing metrics so you can see the full picture.
Explore the fasting module →Track your fast, your sleep, your mood, and your energy — all in one app. Free during beta.
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