Callie Guides
Long-form pillars and interactive calculators — start here if you want the full picture.
The Complete Guide to AI Calorie Tracking (2026)
How AI calorie tracking actually works — computer vision, voice transcription, multi-language logging, and where the technology still falls short.
Calorie Deficit Calculator (TDEE + BMR) & Complete Guide
Free calorie deficit calculator using Mifflin-St Jeor — get your BMR, TDEE, and recommended daily calories for losing or gaining weight.
How to Lose Weight With a Calorie Tracker (2026 Guide)
A science-backed guide to losing weight with a calorie tracker — deficits, timelines, plateaus, and how to do it without becoming obsessive.
Intermittent Fasting: 16:8, 18:6, OMAD Explained (2026)
Compare 16:8, 18:6, OMAD, and 5:2 intermittent fasting schedules — evidence quality, who they work for, who should not fast, and how to combine with calorie tracking.
Keto Macro Calculator & Beginner's Guide (2026)
Free keto macro calculator with fat/protein/carb ratios — plus a complete beginner's guide to the ketogenic diet, electrolytes, and who shouldn't try keto.