TaraKnow what you burn and eat for your goal.
Tara rebuilds your day hour by hour, suggests calories and macros, explains why, and every week corrects them using what you eat and how your weight changes.
Get startedHow everything is calculated
- Free and ad-free
- Works offline
- English and Spanish
- No account required
What Tara is
Tara is a free web app for calories, macros, activity, hydration and injury recovery. You use it in your phone's or computer's browser and you can install it like any other app. You answer a 2 to 6 minute questionnaire, depending on the level of detail you choose, and each day you log food, weight and activity. Tara tells you how much you have left, why, and how your body responds.
You decide on your macros: Tara calculates them, you pick a template or you enter them yourself. If you want to look around before starting, you can open it with example data.
What makes it different
What you burn, from your real day, hour by hour
Instead of multiplying by a single activity factor, it estimates your expenditure hour by hour: it starts from your resting expenditure and takes into account your work, your steps, your training and the digestion of what you eat. Exercise uses METs, your weight and the time, minus the sitting time it replaces.
A training calendar
Plan your activities and, if you choose to, each day's target follows your calendar: more carbs and water on training days. If you log what you actually did, it replaces the plan.
Eating to recover
Choose what you have injured (tendon or ligament, muscle, bone, wound or surgery, joint) and whether you are resting or in rehab. Tara tells you which nutrients to increase, which not to overdo and with which foods, and how much evidence is behind each one.
Water that adapts to you
It starts from the EFSA reference and raises it if you burn or eat a lot (1 ml per kcal). On training days it adds sweat: 0.6 L per hour by default, or your own rate if you weigh yourself before and after.
With sources, and clear about its limits
It uses published equations, EFSA and ISSN references, the Compendium of Physical Activities and foods from the Ciqual 2025 table. Everything is explained, with sources, in How everything is calculated. And it says what it is: an estimate, not a measurement.
It corrects itself with your data
With 2 to 3 weeks of complete logs and weigh-ins, it compares what you eat with your trend weight and adjusts your target in small, cautious steps. If you set your macros by hand, it leaves them alone.
Free, ad-free and offline
It costs nothing and has no ads. Once opened, the basics work without internet; searching products on Open Food Facts and syncing with your account do need a connection.
Your data, on your device
Without an account, what you log is stored only in your browser. With an optional account, it is also stored in the cloud so you don't lose it and can use it on several devices. No tracking cookies and no advertising.
In English and Spanish
The whole app, the explanations and the legal texts are available in both languages. You can switch language at any time in the settings.
What it looks like
Screenshots of the app with example data.
How to start
- Questionnaire2 to 6 minutes, depending on the level of detail you choose.
- Your macros and habitsYou decide: Tara calculates them, you pick a template or you enter them yourself.
- Every dayLog food, weight and activity, and learn how your body responds.
Frequently asked questions
Is it free?
Yes. Tara is free and has no ads.
Where is my data?
If you use it without an account, only on your device, in your browser's storage. If you create an account, also in our database, so you don't lose it and can use it on several devices. You can delete your account and all its data from the app. The details are in the privacy policy.
Do I need an account?
No. You can try it without an account. The account is optional and lets you keep your logs in the cloud and use them on your phone and your computer.
Can I install it?
Yes. On Android and on computers, use the install button in the app or the browser. On iPhone, from Safari: Share, then "Add to Home Screen". It opens with its own icon, full screen, and works offline.
Is it medical advice?
No. Tara gives general information about nutrition and activity: it is not medical advice and does not replace a healthcare professional. If you have an illness, take medication, are pregnant or are injured, talk to a professional.
Does it use cookies?
It uses no tracking or advertising cookies. It stores in your browser only what it needs to work. The cookie policy explains it.
Start whenever you like
No app store download and no account required. Open the app and answer the questionnaire.
Get startedTara gives general information about nutrition and activity: it is not medical advice and does not replace a healthcare professional. Calories, food composition and activity expenditure are estimates, not measurements or guaranteed results. Automatic plans are not intended for minors, underweight people, pregnancy, breastfeeding, kidney disease, diabetes or a history of eating disorders. Injury guidance does not replace diagnosis, treatment or rehabilitation.