Yez3Less fat, more muscle, more energy. Clothes that fit the way you want, photos you don't hide from, a body you're proud of. Yez3 is the AI coach that keeps you going until you get there — with any diet or workout.
Start my weight-loss planiPhone, Android & Web · Start as a guest in the mobile app, no sign-up · Works with any diet or workout
Find your starting point
Health & weightYez3 doesn't sell a diet. It's an AI coach and daily planner that keeps you going until you reach the body you want — 10 kg lighter, stronger, with more energy. You choose the method; Yez3 makes sure you don't drop it in week two, checks in before you drift and gets you back on track after a slip.
Not because people don't know what to do. Most have already tried a diet or two and a gym membership. Plans fail because they're built for perfect weeks. One busy week, one bad weekend, and it's back to square one.
52% of American adults want to lose weight, but only 26% are seriously trying — Gallup, 2025.
Only 18.2% of 1.4 million MyFitnessPal users reached their weight goal — Gordon, Althoff & Leskovec, Stanford, 2019.
People trying to lose weight made 3 attempts in 5 years on average; 74% feel frustrated by the lack of progress — Talker Research for Medifast, 2024.
The problem isn't the start. It's what happens after the first slip. Yez3 is built for that moment.
Not just a lower number on the scale. The real goal is how you look, how you feel and what your body can do.
Less fat, more muscle. A firmer, stronger body — not just a smaller one.
Clothes in the size you want. Shop for what you like, not for what still fits.
Energy all day. No afternoon crash — enough left for your kids, your friends and your plans.
A body that keeps up. Stairs, hikes, running around with the kids — without stopping to catch your breath.
Confidence. Photos, beaches, dates — no more hiding.
For good. Weight that stays off, because the new you is your normal.
Pick what fits you — your coach will build your first plan around it.
Your starting point: Lose weight
Start with my goalMost apps help you start. Yez3 is built for the day you skip. Your coach doesn't scold you — it helps you find what got in the way and makes tomorrow's step small enough to restart.
CoachExample conversationThree days off doesn't erase two good weeks. What got in the way — time, weather or energy?
Then let's fit tomorrow's Minimum to a tired evening: a 10-minute walk right after dinner. Want me to put it on your plan?
Done. "Walk 10 minutes after dinner" is on tomorrow's Minimum.
People rarely want a number on the scale. They want how it feels. When researchers studied 56,000 notes MyFitnessPal users wrote about their goals, the biggest themes were health, clothes, a longer and happier life, and being an example for their kids — Stanford, 2019. Tell your coach your reason; it remembers it and reminds you on hard days.
Have more energy. Get through the afternoon without a crash.
Fit into my old jeans. Feel comfortable in your clothes again.
Keep up with my kids. Play, run, climb stairs without stopping.
Be a good example. Show your family what taking care of yourself looks like.
No. Yez3 isn't a diet and doesn't sell meal plans. Keep the approach that works for you — Yez3 makes sure you actually follow it, day after day.
Already use a food or fitness tracker? Keep it. Yez3 plans what you'll do today; your tracker records it.
iPhone, Android & Web
Workouts on Mon, Wed and Fri, a walk every day — they land in the right plan automatically.
"Walk after dinner" at 7:30 pm, on the days you choose.
Say everything on your mind — groceries, meal prep, gym bag — and Yez3 turns it into tasks.
Your walk comes before errands. Routine tasks wait until the important ones are done.
See which days you showed up over the last 6 weeks.
Your goal, your reason, your usual blockers — the coach remembers them, and you can edit anything.
Diet apps tell you what to eat. Fitness apps tell you how to train. Yez3 makes sure you keep doing it — with a plan for bad days and a coach who notices when you drift.
| Diet / calorie app | Fitness app | Yez3 | |
|---|---|---|---|
| Works with any diet or workout | — | — | ✓ |
| Plan for bad days (Minimum) | — | — | ✓ |
| Checks in when you're slipping | — | — | ✓ |
| Helps you restart after a slip | — | — | ✓ |
| Remembers your reason and blockers | — | — | ✓ |
| Also handles the rest of your day | — | — | ✓ |
Smaller goals are reached more often. Among MyFitnessPal users, people with the smallest goals reached them about three times as often as those with the biggest. — Gordon, Althoff & Leskovec, Stanford, WWW 2019
The first week predicts the outcome. Behavior in the first 7 days predicted who would reach their goal. — Stanford, 2019
Health beats looks. Goals driven by health were reached more often than goals driven by clothes and appearance. — Stanford, 2019
"Do" beats "don't". 58.9% of approach goals ("exercise twice a week") were kept for a year, versus 47.1% of avoidance goals ("stop being sedentary"). — Oscarsson et al., PLOS ONE, 2020
These studies are about goals and weight loss in general, not about Yez3.
Yez3 helps you stick to whatever plan you choose. It turns your goal into small daily steps, gives you a Minimum for bad days and an AI coach who checks in and helps after a slip. How much weight you lose depends on your plan, your body and your doctor's advice.
No. Yez3 works with any approach: calorie counting, intermittent fasting, walking, gym, yoga or a plan from your doctor. It doesn't tell you what to eat — it makes sure you do what you decided to do, every day.
Most plans are built for your best day, so one bad week breaks them. Yez3 starts with a Minimum small enough for your worst day. When you slip, your coach helps you restart small instead of starting over next Monday.
Your Minimum can be as short as 5–10 minutes. Planning your day takes a minute or two, and your coach can sort tasks into plans for you. On good days you can do more — but the Minimum is what keeps you going.
No. Yez3 is a planner and coach, not a workout or meal-plan library. Use any program you like — from an app, a trainer, a book or your doctor — and put its steps on your daily plan.
Yes. Yez3 can help you keep the habits that go with any treatment or program — walks, meals, water, sleep. Always follow your doctor's instructions; Yez3 is a planning tool, not medical advice.
Nothing dramatic. The day counts as a miss, and your coach helps you figure out what got in the way. Days you mark as days off never break your streak, and earned streak freezes can protect it automatically.
Yez3 is a subscription with a free trial for new subscribers. The price depends on your country and is shown in the App Store or Google Play before you pay. You can try the mobile app as a guest first — no sign-up — and create an account later to keep your progress.
No. Yez3 is a planning and coaching tool. Talk to your doctor before starting a new diet or exercise program, especially if you have a health condition.
Pick your goal — your coach keeps you going until you see it in the mirror.
Yez3 is not a medical service. Talk to your doctor before starting a new diet or exercise program. Individual results vary.
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Finally launch the big thing, and leave work with a clear head.
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