Mark Sign

Content rating
Everyone
10+
Downloads
Content rating
Everyone
Users Interact
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About this app

Sign documents with qualified eSignatures. Legally binding documents throughout the EU. Secure and easy-to-use document signing process.

• Sign eDocuments with a qualified electronic signature.
• Check the validity of a signed eDocument.
• Single account for teams.

Many ways to verify your identity. Sign documents from anywhere in the world using your Smart-ID, Mobile-ID, LT ID or ZealiD.

Legally binding signatures. Under the EU eIDAS regulation, a qualified electronic signature has the same legal effect as a handwritten one.
Sign, manage and validate signed documents with ease
Updated on
Oct 15, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, Messages and 5 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

Sign documents with Smart-ID, Mobile-ID, LT ID or ZealiD, invite others to sign, and get notified when a document needs you.
Content rating
Everyone
Users Interact
Learn more

App support

Phone number
+37060175907
About the developer
MARK ID, UAB
info@markid.lt
Zalgirio g. 90-100 09303 Vilnius Lithuania
+370 601 75907