FirstPrinciples Cards
A spaced-repetition flashcard deck for mobile devs that teaches each framework pattern as a chain of 'what problem does this solve?' prompts instead of a code snippet.
Junior Android and iOS engineers cramming for onsites at mid-size tech companies
- Each card flips from a prompt ('Why a sealed interface and not an enum?') to the answer with a real code example
- Spaced repetition tuned for the 2-4 week interview-prep window, not academic learning
- Streak and weakness reports so you know which concepts you memorized but cannot derive
- Community-shared deck for new Android releases so the content stays current
Mobile interview prep is dominated by finished-code flashcards; the Dev.to post argues this is exactly why candidates fail behavioral and architecture rounds.
The cited Dev.to 'why now' post is not findable in search, undermining the trend claim; only broad mobile-system-design courses (Udemy, Educative) appear, with no direct evidence of demand for a mobile-specific 'first principles' flashcard deck.Master the Android System Design Interview - Udemy ↗Mobile System Design Interview Course - Educative 2024 ↗
Generic dev Anki decks (JS/Java/DSA) and one Android-inclusive GitHub deck exist, but no mobile-first-principles-only spaced-repetition product surfaced in results.GitHub - crnjihia/dev-flashcards: Technical interview prep flash card ↗ML Interview Anki Deck | The Handbook ↗
Junior mobile engineers are notoriously price-sensitive and free Anki decks (e.g., ML interview deck) compete directly; paid alternatives like Educative sit at ~$79/yr but target broader system design, not narrow flashcard decks.ML Interview Anki Deck | The Handbook ↗Grokking System Design Interview: Original Course ↗
Each Android release shifts some patterns, so the deck must be maintained but the demand is durable
Implementation is essentially content authoring — an Anki .apkg or simple RemNote/Space deck — no engineering or platform risk.Anki - powerful, intelligent flashcards ↗Space | The Anki Alternative That Actually Looks Good ↗