The focused way to learn technical English

Master the technical English engineers use on the job — from schematics and PLCs to firmware and DevOps. Short lessons built for electronics, automation, embedded, and software professionals.

Why technical teams choose Voltlingo

Job-ready vocabulary Terms you will see in datasheets, HMI screens, code reviews, and safety meetings — not generic textbook phrases.
Six practice modes Multiple choice, fill-in-the-blank, symbol ID, listening, speaking, and matching — including American English pronunciation (en-US TTS).
Progress that sticks XP, daily goals, streaks, weak-word review, and cloud sync when you sign in.
Group PRO plans Team leads purchase seat-based Group PRO, invite members by Google email, and manage access from the Boss Portal.

Sectors covered

Electronics Embedded Systems Automation & PLC Software Development

Unit 1 in every sector is free to try. Sign in with Google to save progress, or upgrade to Individual PRO / Group PRO for unlimited hearts and full access.

Pick a sector

Master the English engineers actually use on the job.

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Mastery by sector

Settings

Sound effects Ding on correct answers, buzz on misses, fanfare on lesson end.

Daily goal XP target per day. Hit it to advance your streak.

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Power-ups and Voltlingo PRO.

Refill Hearts

Free players do not regain hearts over time. Refill all five hearts by watching an ad or with a one-time purchase.

Individual PRO

Personal subscription for solo engineers who want the full curriculum.

Unlimited hearts — never get locked out
Unlock every unit across every sector
Ad-free distraction-free practice
Cloud sync across devices

$4.99 / month

Group PRO

For team leads, trainers, and bosses. Purchase seats and invite members by Google email. You become the Boss and get access to the Boss Portal.

All Individual PRO perks for every invited member
Adjustable seat limits
Boss Portal to manage allowed emails
Perfect for teams, classrooms, and study groups