# Guides

Source: https://caltrak.app/guides

Guides to calorie tracking: getting started, how many calories to eat, AI photo accuracy, Apple Health and Android.

- [**How accurate is AI food photo logging?**What AI calorie estimates from food photos get right and wrong, which photos work best, and how to get closer numbers. From the developer of CalTrak.](https://caltrak.app/guides/ai-food-photo-accuracy)
- [**Calorie tracking on Android**CalTrak for Android is a free, private calorie tracker with barcode scanning, AI photo logging, Health Connect sync and home screen widgets. No account, no ads.](https://caltrak.app/guides/calorie-tracking-on-android)
- [**Calorie tracking with Apple Health and Apple Watch**How CalTrak works with Apple Health and Apple Watch: what it reads and writes, how the Calorie Burn Bonus avoids double counting exercise, and how to set it up.](https://caltrak.app/guides/apple-health-calorie-tracking)
- [**How many calories should you eat to lose weight?**How to find a calorie deficit that works: estimate maintenance, pick a safe pace, set protein and adjust using your real weight trend. With worked examples.](https://caltrak.app/guides/how-many-calories-to-lose-weight)
- [**How to count calories without making an account**Why most calorie apps want an account, what that means for your data, and how to track calories and macros with no sign-up, email or password.](https://caltrak.app/guides/count-calories-without-an-account)
- [**How to start counting calories**A beginner's guide to counting calories: get a target, log your first week, learn portion sizes, handle restaurant meals and keep it up without burning out.](https://caltrak.app/guides/how-to-start-counting-calories)

## Get CalTrak

CalTrak is free on iPhone and Android. No account, no ads, no subscription, and AI logging is free. Your food log stays on your phone.

4.9-star App Store rating from 99 ratings; 4,000+ downloads across the App Store and Google Play.

- App Store: https://apps.apple.com/app/id6764352979
- Google Play: https://play.google.com/store/apps/details?id=com.ryanbulcher.caltrak
- Support: support@caltrak.app