A small health companion built around privacy and clarity.
VSTSAWEB started from one simple idea: many people want quick, trustworthy health numbers and gentle habit support, without creating another account or sending anything to the cloud.
- Four focused calculators: BMI, calories, body fat, and BMR/TDEE.
- A light‑weight challenge system for streaks, achievements, and simple progress views.
- Fully offline design: all calculations and challenge data stay on your device.
What VSTSAWEB is here to do
VSTSAWEB is designed for people who want to understand their health metrics and keep a single, low‑friction place to track goals.
Instead of building a social network or a complex analytics dashboard, the app focuses on a clean calculator experience and one active challenge at a time. You see the stats that matter—BMI, daily energy use, rough body fat estimates, calorie intake—and then turn them into small daily actions you can actually follow.
Privacy as a starting point
VSTSAWEB is intentionally offline‑first and account‑free.
Calculators run entirely on your device. Challenge targets, check‑ins, and achievements are stored locally using the system's secure preferences (UserDefaults) instead of a remote server. There are no analytics SDKs, advertising networks, or tracking pixels bundled into the app.
What guides VSTSAWEB
Three simple principles shape every feature we add.