Macrocodex can work even when calorie logging is sparse. A user may fail to log data for a few days each week, and maintenance calories can still remain accurate because it operates over your entire history.

If you read our privacy policy, you’ll see that it collects total calorie and weight data from users, which we use to improve our adaptive TDEE algorithm. It does not collect email, phone number, date of birth or anything which is not necessary for product improvement/diagnosis.

You can probably achieve something similar with Claude and a bunch of scripts if you log your calories every day.

macrocodex is entirely deterministic, it just works and users don't need to fiddle with it.

Log your calorie each day, log your weight weekly and it will continue producing calorie and macro targets for you to achieve desired rate of weight gain or loss.

It also has many more features, such as lean bulk, cut, and body recomposition modules. It includes a planner that helps you decide when to switch from cutting to lean bulking (or vice versa), or when body recomposition efficiency starts dropping for you.

For example,

To gain least fat while gainng muscles, Lean bulk is what you need.

The key is to focus on your rate of weight gain, not a specific calorie number or surplus percentage.

Weekly Weight Gain Rate:

Beginners: 0.25-0.5% of body weight

Intermediates: 0.25-0.4%

Advanced Lifters: 0.1-0.25%

Usually, a calorie Surplus: +5-10% of TDEE (roughly 100-300 kcal/day) may get you there but if it doesn't adjust your calories up or down to reach the desired weekly weight gain rate.

This is where macrocodex can do better than chatgpt/claude over long horizon.