Build an Android app called EquitySim for young tech professionals to make sense of their stock options. Users can enter their grant details (option type, shares, strike price), vesting schedule (start, cliff, duration), and a company valuation to simulate what their options might be worth under different exit scenarios (e.g., acquisition, IPO) over various timelines. The experience should feel modern and clear, with interactive sliders that update results instantly and smooth micro-interactions, following Material Design. Saved grants and scenarios should be stored securely on-device for fast access.

Technically, keep it native and lean: Kotlin with an MVVM approach, UI fully in Jetpack Compose, local storage via MMKV, and a single-flavor build. Please ensure real-time calculations are reflected in the UI and that the project compiles cleanly with compatible Gradle/Kotlin/Compose versions.