Best macro tracker for intermittent fasting
IF apps cluster around fasting timers. The real question is whether the tracker pairs fasting windows with adequate protein and electrolytes when you do eat.
How we judged this category
Welling pairs a fasting window with a 'compressed protein' target — making sure you hit your daily protein floor in a 6- or 8-hour window. Most fasting apps just count hours.
Top 5 picks
Welling
Fasting window + compressed protein target + electrolyte nudges.
MacroFactor
Strong macro periodisation around an eating window.
MyFitnessPal
Manual workaround using meal labels.
Trusted sources on intermittent fasting
Other categories you may want
Weight loss
For sustained fat loss, the single biggest predictor of success in published trials is logging adherence — not the precise calorie count.
Keto & low-carb
On keto, the only number that decides whether you stay in ketosis is net carbs — and most apps still surface gross carbs by default.
GLP-1 (Ozempic, Wegovy, Mounjaro)
On semaglutide or tirzepatide, your appetite signal is unreliable. The job of the tracker shifts from restriction to making sure you hit a protein floor and adequate calories.