# Callie Guides

> Long-form pillars and interactive calculators — start here if you want the full picture.

Canonical: https://www.mycallie.app/en/guides
Source: https://www.mycallie.app

- [The Complete Guide to AI Calorie Tracking (2026)](https://www.mycallie.app/en/guides/ai-calorie-tracking) ([Markdown](https://www.mycallie.app/md/en/guides/ai-calorie-tracking.md)): 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](https://www.mycallie.app/en/guides/calorie-calculator) ([Markdown](https://www.mycallie.app/md/en/guides/calorie-calculator.md)): 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)](https://www.mycallie.app/en/guides/how-to-lose-weight-with-a-calorie-tracker) ([Markdown](https://www.mycallie.app/md/en/guides/how-to-lose-weight-with-a-calorie-tracker.md)): 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)](https://www.mycallie.app/en/guides/intermittent-fasting) ([Markdown](https://www.mycallie.app/md/en/guides/intermittent-fasting.md)): 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)](https://www.mycallie.app/en/guides/keto-macro-calculator) ([Markdown](https://www.mycallie.app/md/en/guides/keto-macro-calculator.md)): 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.