120 deep tickets · 10 system design walkthroughs · 5 mock interviews · spaced repetition · bilingual EN/RU. Everything local on your device — no analytics, no cloud sync, no tracking.
One-time $49.99 · no subscriptions · lifetime updates
Built for senior-bound Rust engineers who'd rather study at their own pace.
Across 15 Rust topics — ownership, lifetimes, async, traits, smart pointers, concurrency, error handling, unsafe, FFI, more. Bilingual EN/RU.
Senior-level walkthroughs: matching engine, time-series DB, search index, multi-region KV store, crypto wallet custody, more.
Five-question scenarios with progressive hints, red-flag indicators, strong-answer reveals, and rubric scoring.
Leitner-5 boxes: 1 / 3 / 7 / 14 / 30 day intervals. Focus on what you're forgetting, not what you already know.
10 compact reference cards + 61 alphabetical Rust terms with code examples. Quick lookup before an interview.
6 sequential lesson series — Ownership 101, Lifetimes, Async, Errors, Iterators, Smart pointers — with progress tracking.
Rust syntax highlighting, basic lint, auto-save, 28 common pattern snippets to insert at the cursor.
Activity heatmap, day streak with goal protection, per-category mastery, recent activity, tutorial progress.
Everything in on-device Hive boxes. Backup/Restore via JSON file you control. No telemetry, ever.
No subscriptions, no IAP, no upgrade prompts.
Fully offline. All 120 tickets, 10 System Design walkthroughs, 5 Mock interviews, Cheatsheet, Glossary, and Tutorials ship inside the app. The only network usage is the system share sheet when you Export your progress backup — and even that is your choice.
Yes — when the app updates on the store, you get new content (more tickets, tutorials, snippets) without paying again. Same Apple/Google account, same purchase, free updates.
Built on the classic Leitner system: tickets graduate through 5 boxes with growing intervals (1, 3, 7, 14, 30 days). Marking "known" moves a ticket forward; "review" sends it back to box 1. Quiz mode then surfaces the tickets that are due, so your study time concentrates on what you're at risk of forgetting.
Yes — every interview ticket, every System Design walkthrough, every Mock interview, every Tutorial lesson, every FAQ entry, and the entire Glossary are written and maintained in both English and Russian. Toggle the UI language and the content translation independently in Settings.
Nothing. The app has no analytics SDK, no crash reporter, no telemetry pings, no third-party tracking. Your progress lives in on-device Hive storage inside the app's private data directory. Uninstalling the app removes all data (the Export progress button gives you a portable JSON backup you can save anywhere first).
Of course. The Tutorial series, Cheatsheet, Glossary, and Editor snippets aren't interview-specific — they cover Rust fundamentals at a depth that's useful for anyone learning the language. The interview framing applies to the 120 tickets and the Mock scenarios specifically.
App Store and Google Play submissions are in flight. Drop your email and you'll get a single message the day the app goes live — nothing else.