What Elvyfit is and how it works
Elvyfit is a workout and nutrition app for iPhone and Android, made in Spain. It tells you what to train today, counts your food and guides you with Elvy, an AI that always presents itself as an AI.
What the app does
Elvyfit brings together in one place what you do every day: your gym routine, your food, your weight, your progress photos and your consistency. You start with a questionnaire of a few minutes about your goal, your level, your days, your equipment and your eating habits, and the app prepares a routine and a meal plan for you.
There are features to log workouts and meals, see your progress and talk to Elvy. You can start with the Free plan and try Plus for 7 days with no card, as the pricing page explains.
How it calculates your plan
Your routine and your diet are generated by the app code with rules, not by a language model. For calories it uses the Mifflin St Jeor formula and your activity level, and it never goes below a safety minimum. The pace of weight loss or gain has weekly caps. Protein starts at 1.6 grams per kilo of body weight.
If your weekly report shows your weight drifting from the expected pace for two weeks, the app suggests a small calorie adjustment, keeps a record of it and lets you undo it. The details of each calculation are in the guides on the blog.
What the AI does and what the code does
The split is deliberate: whatever affects your safety is decided by code that can be checked, and the AI is used where it helps to chat and to estimate.
The code decides
Your routine, your diet, your calories, the safety minimums, the load limits and the exclusion of your allergies.
The AI helps
It answers your questions, estimates a meal photo and suggests changes to your routine or your week. Elvy proposes changes to your routine, your food and your week on a card, and you apply them.
And there is a safety net
A detector based on rules and text patterns intercepts messages where it recognizes a crisis, eating disorders, extreme diets or compulsive exercise, and replies with a fixed text and help resources. It may miss unusual wording and does not replace professional help.
Your data
Health and wellness data is only processed with your explicit consent and is never sold. The consent for Elvy to use the AI is optional and comes unticked: the chat and the meal analysis need it, and the body analysis and the video technique analysis ask for their own specific consent before sending anything. You can see and delete what Elvy remembers, export all your data or delete your account from Settings.
Requests to the AI carry no name, email or identifier. The full texts are in the privacy policy, the AI notice and the cookie policy.
Its limits
Elvyfit is a wellness tool for people aged 18 or over, not a medical device: it does not diagnose, does not treat and does not replace your doctor, a registered dietitian or a psychologist. Before you start it runs a health screening and adapts what it suggests. Calorie, macro and load calculations are estimates, and a meal photo is estimated, not measured. Read the health notice.
The app itself is in Spanish (Spain) for now. This website is in Spanish, Catalan and English so you can get informed before downloading it.
Shall we start?
Download Elvyfit, answer the 18 step questionnaire and start with a plan built around you.