JLG

Small Team.
Big Experiences.

Crafting engaging, private iOS apps.
100% free. No accounts. No tracking.

SlovoBox Icon

SlovoBox

Free, No-Ads, Linguistic Toolkit

Download on the
App Store
Immersive Stories

Bridge the gap to fluency with 35+ narratives per language, featuring adjustable audio and instant lookup.

Audio Mastery

Hone your ear with "Tortoise to Hare" speed controls. Professional TTS ensures authentic pronunciation.

Calibrate Growth

Rank your confidence for every word. Focus your daily deck specifically on what you are actually learning.

Lock Screen Momentum

Passive learning through active visibility. iOS Widgets cycle through your deck for all-day reinforcement.

The Vault & Insights

Seal mastered words in your permanent Vault and track your progress with deep linguistic analytics.

Universal Toolkit

One private environment for Russian, Spanish, Italian, French, and Japanese. No subscriptions required.

Transitioning from Study to Mastery

SlovoPop Icon

SlovoPop

A Linguistic Arcade

Ignite Your Memory.

Experience the "Flow State" of language learning. Burst through the vocabulary stream in a high-speed environment.

Download on the
App Store
SlovoPop Gameplay
Synapse Overdrive

Push your mental heat to the limit to trigger scoring multipliers and rapid-fire word replacement.

Persistent Mastery

Progress through levels across multiple languages. Your growth is saved entirely on-device.

From Language Learning to Arcade Action

Rocket Ripper

Rocket Ripper

Arcade Action

Download on the
App Store

Blast Through the Cosmos

Ship Upgrades

Unlock special abilities to unleash devastating attacks on enemy ships hell-bent on your destruction.

Elite Controls

Engineered for iOS. High-speed asteroid dodging and dogfights with zero lag.

Privacy & Usage Policy
Ownership

SlovoBox, SlovoPop and Rocket Ripper are owned and published by Jack Luck Games, LLC.

Zero-Tracking Guarantee

Our apps (SlovoBox and SlovoPop) do not collect, track, or transmit personal data. We use zero third-party analytics and zero advertising SDKs. Your learning journey is yours alone.

Local-Only Progress

All progress—including mastered words, levels, and high scores—is stored directly on your device using UserDefaults. Deleting the app deletes this data. We have no way to see or restore it because we never touch it.

Last Updated: March 2026