Live on Google Play

Belong

Study the civics test. Practice the interview out loud.

Google Play Website

Role: Sole developer: product, content sourcing, Android development, brand, website and Play release.
Platform: Android
Timeline: 2026
Status: Live on Google Play

Belong mock interview: the officer's question read aloud, with the microphone to answer

Belong Home: readiness 73%, interview in 18 days on the 2025 test, today's goal and the study tools

Belong My officials: senators, representative and governor for a California ZIP code

Overview

An Android app for the U.S. naturalization test: every official civics question with its USCIS answers, a mock interview read aloud and answered by voice, reading and writing practice, the N-400 questions explained, and your own officials by ZIP code, in English and Spanish.

Problem

Applicants study a list of civics questions, but the interview is spoken: an officer reads questions aloud and stops as soon as the result is settled. Two tests are in use, chosen by the N-400 filing date, and some answers depend on where you live. Belong picks the right test, runs the interview with the officer's rules, and answers the local questions from a ZIP code without sending it anywhere.

What I built

The 2025 (128 questions) and 2008 (100) civics tests, picked from the N-400 filing date, plus the 65/20 list
Official USCIS questions and answers, each with a short explanation labelled as Belong's
Flashcards, topic quizzes and spaced review, with every question read aloud at three speeds
Mock interview asked aloud and answered by voice or typing, with the officer's stop rules
Reading and writing practice built only from the official USCIS vocabulary lists
The N-400 yes/no questions quoted from the form, with the hard words explained
Senators, representative, governor and capital from a ZIP code, looked up on the phone
Readiness, a daily goal counted down to the interview date, and a daily reminder
English and Spanish app, switched in place without restarting the screen
Free study for every question; Belong Pro monthly or once for lifetime, through RevenueCat

Engineering

01
Matching answers the way an officer hears them
A spoken answer passes if every word of an accepted answer is there, in any order and with extra words, but not if it adds a word that flips the meaning, so "the Vice President" never matches "the President". Plain Kotlin with JVM tests.
02
Content that can't drift from USCIS
Both question banks are copied from the official USCIS documents and checked in the unit tests: count and numbering, the 65/20 marks, every translation, and that no wrong quiz option would pass the answer matcher.
03
Local answers without sending a location
A ZIP-to-district table ships in the app. The officials list refreshes from the app's website at most once a day, only when its verified date is newer, with no identifier in the request.