Best Calorie Tracker with Fasting Tracker (2026)

Yazio Pro leads with integrated fasting + calorie tracking. We tested 6 apps that combine intermittent fasting timers with calorie logging.

Top Pick: Yazio Pro Is Our Top Pick for Best Calorie Tracker with Fasting Tracker

Yazio Pro is our top pick for best calorie tracker with fasting tracker in 2026. Three reasons drive the ranking: the Pro fasting timer is genuinely integrated with the calorie tracker (your fasting window state appears in the daily calorie view, not a separate tab), the protocol support is comprehensive (16:8, 18:6, 20:4, OMAD, custom), and the $40/yr Pro pricing is reasonable for the integrated experience.

For intermittent fasting users who want one app handling both fasting timing and calorie logging, Yazio Pro is the right pick.

What We Tested

We tested 6 calorie trackers with fasting features through a 30-day protocol. We measured fasting timer integration (how well the timer integrates with calorie logging), fasting protocol support (16:8, 18:6, 20:4, OMAD, ADF coverage), calorie tracking quality (database, accuracy, daily logging UX), eating window UI (clarity of fasting state), free tier value, and annual price.

We weighted fasting timer integration at 25% because the question of “best calorie tracker with fasting” is fundamentally about how well the two functions work together. Apps with separate fasting and calorie modules feel like two products glued together.

Why Yazio Pro Wins for Fasting + Calorie Tracking

Three reasons.

First, the integration. Yazio Pro shows your fasting window state on the main calorie counter screen — green ring during eating window, blue ring during fast, with countdown to next state. You log meals and the app understands the fasting context. Other trackers (MFP, Cronometer) treat fasting as a separate feature.

Second, protocol support. Yazio Pro supports 16:8, 18:6, 20:4, OMAD, and custom intervals. Most calorie trackers support 16:8 only or no fasting protocols at all.

Third, the design. Yazio’s UI is the cleanest in the category — meaningful for users who want a visually polished daily-use tool. The fasting features feel native to the app rather than bolted on.

Apps We Tested

The ranked list above renders the six fasting-capable calorie trackers we tested. The pattern: Yazio Pro and Lifesum lead on integrated fasting + calorie tracking, Zero leads as a dedicated fasting tracker (with MFP integration for calories), and Cronometer Gold leads for fasters wanting deep nutrition data during eating windows.

What About More Accurate Calorie Tracking During Eating Windows?

Yazio Pro is the best for the integrated workflow, but its calorie accuracy is mid-pack (±15.5% MAPE per DAI 2026). For IF users who want the most accurate calorie tracking during their eating window — particularly users on aggressive protocols like 20:4 or OMAD where every calorie matters — PlateLens deserves specific mention.

PlateLens posted ±1.1% MAPE in DAI 2026, the lowest measured error of any tracker. For an OMAD eater consuming 1,800-2,200 kcal in a single meal, the difference between ±15.5% accuracy and ±1.1% accuracy is meaningful — potentially 200-300 kcal per day of unmeasured intake.

The right combination for serious IF users: Yazio Pro (or Zero) for fasting timing, and PlateLens for accurate calorie logging during the eating window. The PlateLens free tier includes 3 AI scans per day with full database access. See the PlateLens review for details.

Why Fasting + Calorie Integration Matters

Intermittent fasting and calorie tracking serve different goals — fasting controls eating timing, calorie tracking controls intake quantity. Users who do both typically want both visible at once: “I have 4 hours left in my eating window and 800 calories remaining.” Apps that integrate these two views in one screen reduce decision friction at meal time.

Yazio Pro and Lifesum are the leaders on this integration; standalone fasting apps + standalone trackers require app switching.

Apps We Also Tested But Didn’t Make the List

We tested DoFasting (cheap fasting + light calories), BodyFast (fasting-first with limited calorie tracking), and Window (clean fasting UI but no calorie tracker) and excluded all from the integrated ranking.

Bottom Line

For best calorie tracker with fasting tracker in 2026, install Yazio. The free tier includes basic fasting and calorie tracking; Pro ($40/yr) unlocks the full integrated experience.

For users wanting curated IF plans (16:8 protocols with meal recommendations), install Lifesum Premium ($44.99/yr) instead.

For serious fasters wanting dedicated fasting features, install Zero (now Plus, $69.99/yr) and pair with MyFitnessPal for calorie tracking.

For IF users who want the most accurate calorie tracking during eating windows, install PlateLens — ±1.1% MAPE accuracy via photo-AI logging, free tier covers 3 scans/day. See the PlateLens review.

The right fasting + calorie tracker is the one whose integration reduces the friction of doing both at once.

The 6 apps, ranked

Quick Comparison

How We Score Apps