Fast smarter with
real-time deficit tracking.
Most fasting apps give you a countdown timer. Acai gives you something better — a live calorie deficit tracker that shows your BMR burning in real time. Watch your deficit grow during fasting. See exactly where you stand when you eat. Know how your day will end before it does.
The live BMR ticker is perfect for fasting
Other apps show you what you ate. Acai shows you what your body is doing right now. The live BMR ticker counts calories burned in real time — so during your fasting window, you can literally watch your deficit grow. It’s the motivation most fasters never knew they needed.
Live deficit counter
Your caloric balance updates in real time. During fasting hours, watch the deficit tick up as your BMR burns through calories — no meals needed to see progress.
End-of-day projection
Acai projects where you’ll land at midnight based on your current intake and BMR. Know whether you’re on track for your target deficit — before your eating window closes.
Instant meal impact
When you break your fast, see exactly how each meal shifts your deficit. The real-time view makes it easy to decide if you have room for another meal in your window.
Shorter eating window means every meal matters more
When you’re eating in a 6- or 8-hour window, there’s no room for nutritional gaps. Acai tracks 245 micronutrients per meal — so you know whether your eating window is actually nourishing you, not just filling you up.
245 micronutrients per scan — vitamins, minerals, amino acids, and more
Weekly dashboard catches deficiencies before they become symptoms
Color-coded indicators — red, yellow, green — show gaps at a glance
Log meals in seconds during your eating window
Your eating window is limited. Don’t waste it searching food databases or scanning barcodes. Acai’s AI identifies every ingredient from a photo and returns a full nutritional breakdown — calories, macros, and 245 micronutrients — in under 10 seconds.
Snap a photo — AI handles ingredient identification and portions
Bookmark your go-to meals for instant one-tap re-logging
Fewer meals to log means even less friction in your fasting routine
Works with your fasting schedule
Acai’s real-time deficit tracking adapts to however you fast. No timer setup required — just eat when you eat, and Acai tracks the rest.
The most popular IF protocol. 16 hours fasting, 8-hour eating window. Watch your deficit grow across those 16 hours.
A tighter window means more BMR burn before eating. The live ticker shows the impact of those extra 2 fasting hours.
One meal a day. When that meal needs to count, 245 micronutrients ensure you’re getting complete nutrition in a single sitting.
Five normal days, two restricted. The end-of-day projection is especially useful on low-calorie days to stay within your target.
Any schedule works. The live BMR ticker and deficit tracker adapt to when you eat — no timer configuration needed.
Fasting is the plan.
Acai is the proof.
Watch your deficit grow in real time. Log meals in seconds with AI. Track 245 micronutrients to make every eating window count.