Questions, answered.

No. It's for anyone losing weight who wants to keep their muscle. It's tuned for the low appetite that often comes with GLP-1 medications, but the protein ranges and strength plans work however you're losing weight.

Three things: it gives you a daily protein range sized to your body and how fast you're losing, plans 2 to 3 short strength sessions a week, and runs a weekly check that tells you whether you're keeping muscle or putting it at risk.

Not at all. Plans start with bodyweight or light dumbbells and short sessions, and only get harder when your last session shows you're ready.

No. Home plans work with a pair of dumbbells or just your bodyweight, and a regular scale is enough to start. A smart scale adds a body-composition trend, which is an estimate, so it's one signal among several.

Early access opens on iPhone first, with Android after. People on the waitlist get in first, with a free trial when paid plans start.

When you eat less energy than you use, your body draws on fat and also on lean tissue, including muscle. How much depends on things like protein intake, strength training, how fast you lose and your starting point.

It varies a lot. A widely cited rule of thumb says about a quarter of weight lost by dieting is fat-free mass, and body-scan sub-studies of semaglutide and tirzepatide trials found lean mass made up roughly a quarter to two-fifths. Lean mass includes water and organs as well as muscle.

Eat enough protein, do strength training at least twice a week, and avoid losing weight faster than you can support with training and food. Our guide on losing fat without losing muscle goes through each one.

It looks at your weight trend, your strength from session to session, and a body-composition trend from a smart scale if you have one. No single number is perfect, so the weekly check combines them and tells you how confident it is.

Smart scales are good at weight but only estimate body fat, and a single reading can be well off for an individual. Using the same scale under the same conditions and watching the trend is more useful than any one number.

Yes. Dyadfit doesn't depend on which medication you take. It focuses on protein, strength training and a weekly muscle check.

No. Dyadfit is a nutrition and training app. It never tells you what medication to take or how much. Keep your doctor or clinician in the loop about diet and exercise changes.

A 2025 joint advisory from US nutrition and obesity societies notes targets of 1.2 to 1.6 g per kg of body weight a day during active weight loss, or roughly 80 to 120 g a day as a practical alternative. Our free calculator works out a range for your body.

In trials, many people regained much of the weight after stopping. In the STEP 1 extension, people regained about two-thirds of the weight they had lost within a year of stopping semaglutide. Talk to your prescriber before changing treatment.

It's health information, so we only save it if you tick the consent box. We use it only to decide what to build first, and you can ask us to delete it at any time.

No. The calculator runs in your browser. Your weight, height, age and other answers are never sent to our servers or to analytics.

No. There are no ads or advertising trackers on this site, and we don't sell personal information.