Refill Hearts
Instantly restore all five hearts so you can keep practicing.
$0.99 · one-timePick a sector
Master the English engineers actually use on the job.
Category
Unit 1 is your free demo. Sign in to unlock more.
Practice
Tap the card to reveal
English
—
Tap to flip
Türkçe
—
—
Canın bitti
Practice paused. Refill your hearts in the Shop or unlock Voltlingo PRO for unlimited play.
Leaderboard
This week's top engineers. Keep your streak alive to climb.
Shop
Power-ups and Voltlingo PRO.
Voltlingo PRO
For engineers who want to learn faster. Unlock the full experience.
- Unlimited hearts — never get locked out
- Every unit unlocked across every sector
- Ad-free distraction-free practice
- Detailed progress analytics