Privacy‑friendly health utility

Understand your health numbers and stay on track.

VSTSAWEB combines four essential health calculators with a simple challenge system, helping you turn BMI, calories, body fat, and energy needs into sustainable daily habits.

Four calculators in one place

One focused challenge at a time

Fully offline · No accounts · No ads

Designed for health‑conscious individuals, fitness enthusiasts, students, and professionals who want meaningful insights without sharing data.

Four health calculators

Instant answers, always on your device.

VSTSAWEB gives you BMI, calorie, body fat, and BMR/TDEE tools in a single clean interface. Check what you need in seconds, without creating an account or sending data away.

Smart BMI & body insights

Enter your height and weight using metric or imperial units and see where you stand, with clear ranges and friendly advice.

BMI calculation with labelled ranges from underweight to obese.
Context on what your current category usually means.
Suggestions for lifestyle changes and when to speak with a doctor.

VSTSAWEB is for general wellness and education only and does not provide diagnosis or treatment.

Healthy lifestyle scene with fresh food and activity

Challenges & habits

Turn numbers into a simple routine.

VSTSAWEB keeps the flow light: pick a focus, set a target, and check in once a day. Progress bars and streaks show your momentum at a glance.

One challenge at a time

Create a BMI, body fat, calorie control, or comprehensive challenge with a clear duration and target.

Daily check‑ins

Log once per day, avoid duplicates, and see completion percentage and streak instantly.

Streaks & badges

Earn small achievements like First Challenge, Week Streak, and Goal Achieved as your consistency grows.

Choose a focus area—BMI, body fat, calorie control, or an all‑round challenge.

Set a realistic duration and target value, then add your first check‑in.

Return once a day, watch your streak grow, and adjust your goals over time.

Privacy & clarity

Your data stays on your device.

VSTSAWEB is designed to be fully offline. Health metrics, challenge history, and preferences are stored locally using on‑device storage only.

Privacy by design

There are no accounts, social feeds, or external servers involved. You can reset your challenge history from within the app whenever you like.

Health metrics are calculated on‑device and only saved when you add them to a challenge.
Challenge progress, streaks, and achievements live locally and are not shared.
No analytics SDKs, ad networks, or tracking frameworks.

Is VSTSAWEB a medical app?

No. It is a wellness and educational tool, not a medical device. It does not provide diagnosis or treatment. Always consult a qualified healthcare professional about symptoms, medications, or treatment plans.

Do I need internet to use it?

No. All core features work offline. Optional local notifications can remind you to complete your daily check‑ins without using push services.

For full details on data handling, see the dedicated Privacy Policy and Terms of Use.

Get started in minutes

Keep your health goals close and your data closer.

Download VSTSAWEB, run your first set of health calculations, and create a simple challenge you can actually stick to. Everything runs on your own device, even when you are offline.

Person checking health goals on a mobile device