Android Vocabulary Builder App with Daily Words, Flashcards and Quiz Mode

An Android vocabulary builder app with daily words, flashcards and quiz mode is a single-purpose learning app that gives a student one new English word every day, teaches it through a flip flashcard, and then tests it with a short multiple-choice quiz. Most students who want a stronger vocabulary collect word lists from books or websites, read them once, and forget them within days, because reading alone does not move a word into lasting memory. This app closes that gap with a short daily habit: a new word arrives each morning with its meaning, part of speech and an example sentence, the student practises it on flashcards during the day, and a quiz the same evening asks the student to recall it instead of only recognising it. Streaks and a simple review schedule keep the habit going, and everything works offline. The result is a small, focused tool that turns scattered word lists into steady, checkable progress.

The app runs a four-stage daily loop: word selection, learning, quiz and review. Each morning the app picks the next word from the 24-word starter bank and shows it as the daily word card with its part of speech, definition and an example sentence. During the day the student practises that word and earlier words on flashcards, flipping each card to recall the meaning before checking it, and marking it known or still learning. In the evening a quiz round asks 10 multiple-choice questions drawn from the bank, with 4 options per question and instant feedback after every answer. The result of each card and quiz answer feeds the review schedule: a correct recall doubles the next review interval (1, then 2, 4 and 8 days, capped at 30 days), while a wrong answer resets the word to a 1-day interval. Streaks, words learned and the due list update from the same on-device records, and the whole loop runs offline.

1. The app opens on the daily word card: one new word from the ordered 24-word bank, with part of speech, definition and example sentence.
2. The student practises on flashcards, tapping each card to flip it and recall the meaning before reading the definition, then marking it known or still learning.
3. Quiz mode starts a round of 10 multiple-choice questions drawn from the word bank, with 4 options per question.
4. Each quiz answer gives instant feedback: a correct answer raises the score by 1, a wrong answer shows the correct word and adds it to the review list.
5. Every answer updates the review schedule: correct recalls double the next interval (1, then 2, 4 and 8 days, capped at 30 days); a wrong answer resets the interval to 1 day.
6. The progress screen updates the day streak, the words-learned count, the last quiz score and the list of words due for review today.
7. All words, answers and progress are stored on the device, so the full loop works offline and resumes exactly where the student left off.

Tech stack:

• Kotlin (Android app language)
• Android Studio (development environment)
• Android Jetpack · Room Database (on-device storage)
• Material Design 3 (app UI)
• SQLite on-device storage
• Gradle build system
• JSON word bank (24 words)
• Git version control

Four parts make up the app's daily loop: a daily word card that introduces exactly one new word each morning, a flashcard deck that teaches the word by active recall, a quiz mode that tests it the same day, and a streak and progress view that shows what has been learned and what is due for review. The daily word card carries the word, its part of speech, a plain definition and an example sentence, so the student sees the word used in context rather than as an isolated entry. Flashcards flip on tap, and each card is marked known or still learning, which feeds a spaced review schedule that brings weak words back sooner. Quiz mode asks 10 multiple-choice questions per round, gives instant feedback, and returns missed words to the review list. All progress is stored on the device, so the app works fully offline.

• [Daily word card] One new word every morning with its part of speech, a plain definition and an example sentence, plus a morning reminder; the word is marked learned once the student has practised it.
• [Flashcard deck with flip and spaced review] Tap-to-flip cards for all 24 words in the starter bank; marking a card known or still learning sets its next review date under a doubling-interval rule (1, then 2, 4 and 8 days, capped at 30 days).
• [Quiz mode with instant scoring] 10 multiple-choice questions per round drawn from the word bank, 4 options per question, instant correct-or-wrong feedback, and a score shown at the end of each round.
• [Streak and progress tracking] A day streak, words-learned count, last quiz score and a due-for-review list on one progress screen, so the student can see exactly what needs attention today.
• [Fully offline word bank] The complete 24-word starter bank, definitions and example sentences are stored on the device; no account, no mobile data and no server are needed to learn or revise.
• [Review-due list] Words answered wrongly in the quiz return automatically to the next day's review list, so weak words are practised again instead of disappearing.
• [Configurable daily schedule] The daily word time and the number of questions per quiz round can be adjusted in the app settings to fit a student's routine. (Configurable feature.)
• [Optional custom word lists] Extra word lists for a specific exam or subject can be added on request, for example GRE-style academic words or placement-test vocabulary. (Optional customization — not part of the base build.)

• Complete Android app source code (Kotlin, Android Studio project)
• Curated 24-word starter bank with definitions and example sentences (JSON)
• Working demo of the app (daily word, flashcards, quiz and progress screens)
• Project report PDF (background, methodology, architecture, review schedule, results discussion)
• PPT presentation for final review
• Viva Q&A preparation document (Android basics, Room storage, spaced review logic, quiz scoring)
• Setup instructions for building and installing the app on a phone or emulator