Is MyFitnessPal accurate for athletes?

Its food logging is as accurate as the entry you pick, and its crowd-sourced database contains a lot of wrong entries alongside the verified ones. The larger issue for athletes is the calorie target, which is predicted from body size and an activity dropdown rather than measured from your own weight trend.

Should I eat back exercise calories in MyFitnessPal?

Only if your baseline target excluded them, which in MyFitnessPal it usually does. The failure is doing both — picking an active lifestyle setting that already assumes the training and then adding the imported workout calories on top. That double-counts and reliably over-feeds by several hundred calories a day.

What is the best alternative to MyFitnessPal?

Cronometer if micronutrient accuracy is what you want, MacroFactor if you want an adaptive expenditure model, and a hybrid tool if the problem is that your calorie target does not know about your endurance volume.

Why is my MyFitnessPal calorie goal wrong?

Because it is a prediction. It comes from Mifflin-St Jeor or similar multiplied by an activity level you selected, and neither term captures non-exercise movement or a training volume that changes across the year. For a hybrid athlete the same dropdown covers a week with thirty miles of running and a week with none.

Does MyFitnessPal track micronutrients?

It reports them, and the coverage depends heavily on which database entry you picked — many crowd-sourced entries carry macros only. Cronometer is substantially more rigorous if micronutrients are what you are after.

Base vs MyFitnessPal for Hybrid Athletes

What MyFitnessPal owns

The database. Enormous, with barcode coverage for most packaged food in most countries. If you eat varied packaged food, nothing beats it on coverage.

Ubiquity. Recipes are shared in its format, friends use it, and integration support is universal.

Recipe and meal tools. Mature, and good at handling home cooking once you have entered a recipe.

It works. Millions of people have successfully changed their body composition with it, and any argument here has to be narrower than "it does not work".

The estimation problem

The target is a prediction, and it is built in two steps that both carry error:

BMR (from height, weight, age, sex) × activity multiplier = target

Step one under-predicts for athletes. Mifflin-St Jeor was fitted on general populations and lands low for people carrying above-average lean mass.

Step two is the real problem for a hybrid athlete. One dropdown covers your entire training life. Consider the same 180 lb athlete across two months:

	Month A	Month B
Lifting	4 sessions/week	4 sessions/week
Running	0 miles	30 miles/week
Extra expenditure	—	~535 kcal/day
MyFitnessPal setting	"Very active"	"Very active"
Target	Identical	Identical

Five hundred and thirty-five calories a day of difference, invisible to the model.

Now put that next to the surplus. A trained lifter's usable surplus is about 179 kcal a day — a pound of lean tissue costs roughly 2,500 kcal, and 0.5 lb a week is 179 a day. A 535-calorie error does not shave your surplus. It inverts it into a deficit, and you spend three months confused about why the scale will not move.

The eat-back trap

MyFitnessPal supports importing exercise calories and adding them to your allowance. That is a legitimate method — provided your baseline excluded the training.

Two coherent approaches exist:

A. Target includes training. Fixed daily number, add nothing for sessions. B. Target is a sedentary baseline. Add each session's cost on the day.

What does not work is A plus B: an "active" multiplier that already assumes four training sessions, plus imported watch calories on top. That reliably over-counts by several hundred a day and produces the classic outcome — ate in a surplus, gained fat, did not get stronger.

The trap is that MyFitnessPal makes A+B the path of least resistance: you pick an activity level during setup, then connect a device, and the calories start arriving.

The alternative: measure it

The method that has none of these problems does not predict anything.

weightChangeLb = trendWeight(today) - trendWeight(14 days ago)
energyBalance  = weightChangeLb * 3500 / 14
maintenance    = avgDailyIntake - energyBalance

Fourteen days, ten of them logged, eight weigh-ins. The result contains every calorie your training cost — whether or not you logged the session, whether or not the watch estimated it well, whether or not you know your own non-exercise movement.

No dropdown. No MET table. No eat-back question, because the question does not arise. Full method and failure cases.

The comparison

	MyFitnessPal	Base
Food database size	Largest	Smaller; Open Food Facts barcode lookup
Database quality	Mixed — crowd-sourced alongside verified	Smaller and cleaner
Recipe tools	Mature	Basic
Day-template logging	Meals, yes	The primary flow — one tap for the whole day
Calorie target	Predicted from a dropdown	Measured from trend weight and intake
Target moves with the day	No	Yes, built on measured expenditure
Micronutrients	Reported; coverage varies	18 tracked, with explicit coverage percentage
Set and rep logging	No	Yes, with RIR
Endurance prescription and grading	No	Yes
Recovery scoring	No	Against your own baselines
Ads	Yes on the free tier	None
Analytics and tracking	Present	None at all

Honest weaknesses on the Base side

The food database is smaller. If you eat varied packaged food from many brands, MyFitnessPal will find things Base will not, and you will fall back to manual macro entry more often.

Recipe handling is basic. MyFitnessPal is better here.

It is in beta. MyFitnessPal is a mature product with a decade of edge cases handled.

Base's bet is that a serious athlete's diet is repetitive, so the winning flow is a saved day logged in one tap rather than a search that finds anything. That bet is wrong for people who genuinely eat differently every day.

When MyFitnessPal is the better call

Your diet is varied and database coverage is the binding constraint.
Nutrition is your only concern and training is handled elsewhere.
You want a mature, shipping product with a decade behind it.
You share recipes with people who use it.

When the target is costing you

The scale has not moved in six weeks and you are eating what it said.
Your training volume changes across the year and your target does not.
You cannot tell whether to eat back your watch calories, which means you probably should not be.

What to do next

Before switching anything, test the claim: log for fourteen days, weigh most mornings, and run the maintenance arithmetic by hand. If it comes out several hundred calories away from your MyFitnessPal target, you have found the problem and it is not the food database.