Depending on which specific app you saw, it might be one of these:
A very lightweight, simple tracker with minimal options for those who want zero complexity. Mi Presupuesto App Android
Finding information on "Mi Presupuesto" for Android can be tricky because several apps share the name. The most popular and well-regarded version is by developer (often localized as "My Budget Book" in English). 📊 Key App Profile: OneTwoApps "Mi Presupuesto" Depending on which specific app you saw, it
Generates pie charts and line graphs to show where your money is going over months or years. Mi Presupuesto App Android