Support
Questions, a mistake in a question, or a problem with an app? Write to contact@ant-tech.eu with the app's name and, if possible, a screenshot. We answer within two working days.
Frequently asked questions
Do I need an account or internet? No. Everything, including the listening audio, is inside the app.
How do I change the interface language? Tap the 🌐 button on the home screen: English, 中文, Español, العربية, Français, हिन्दी, Русский, Português, Deutsch, 日本語, 한국어.
Is my progress backed up? Progress is stored only on your device. It is kept when the app updates and removed if you delete the app.
Refunds are handled by Apple (reportaproblem.apple.com) or Google Play (play.google.com/store/account/orderhistory).
Is Lingua official? No. Lingua is independent and not affiliated with the organisations that run the certificates.
© 2026 ANT-TECH COMPANY LIMITED · contact@ant-tech.eu