Crafting engaging, private iOS apps.
100% free. No accounts. No tracking.
Bridge the gap to fluency with 35+ narratives per language, featuring adjustable audio and instant lookup.
Hone your ear with "Tortoise to Hare" speed controls. Professional TTS ensures authentic pronunciation.
Rank your confidence for every word. Focus your daily deck specifically on what you are actually learning.
Passive learning through active visibility. iOS Widgets cycle through your deck for all-day reinforcement.
Seal mastered words in your permanent Vault and track your progress with deep linguistic analytics.
One private environment for Russian, Spanish, Italian, French, and Japanese. No subscriptions required.
From Language Learning to Arcade Action
SlovoBox and Rocket Ripper are owned and published by Jack Luck Games, LLC.
SlovoBox does not collect, track, or transmit personal data. We use zero third-party analytics.
Your word progress is saved locally on your device using system storage (UserDefaults).
Last Updated: January 2026