Aadhaar Card Guide: Official App, Free Biometric Updates, and Service Fees

For millions of residents in India, the aadhar card (officially spelled Aadhaar) is the primary tool for identity and address verification. Whether you need to download a digital copy, update your residence details, or manage child biometrics, the Unique Identification Authority of India (UIDAI) provides several digital channels to avoid long queues at physical centres.

Essential Aadhaar Digital Services

The MyAadhaar portal serves as the central hub for resident services. Users can instantly download their e-Aadhaar, which is a legally valid digital version of the physical card. Beyond downloads, the portal allows residents to track the status of their update requests and manage their biometric security.

Using the Official Aadhaar App

To streamline access, UIDAI offers an official app for Android and iOS. The app provides a secure way to manage your identity without needing a web browser. Key services available through the app include:

• Downloading e-Aadhaar and sharing Contact Cards.
• Updating mobile numbers and addresses.
• Locking or unlocking biometrics to prevent unauthorized use.
• Checking authentication history and selectively sharing Aadhaar Verifiable Credentials.

Registration on the app is designed for high security; users must select their language, enter their Aadhaar number, and complete face authentication before setting a 6-digit PIN to secure the account [2].

Update Rules: Biometrics and Address

Not all Aadhaar updates carry a cost. UIDAI has specific policies regarding children and address changes to ensure the database remains current.

Free Biometric Updates for Children

Mandatory Biometric Update (MBU) is essential for children as they grow. As of current UIDAI guidelines, this service is free of cost for children aged 5–17 years at Aadhaar centres until 30 September 2027 [1].

Address Update Fees and Process

Updating a residential address is a paid service. Residents can complete this process online by providing valid supporting documents or by leveraging a family member's Aadhaar. This service incurs a fee of ₹75 [1].

Aadhaar Service Summary Table

Service	Fee	Method
e-Aadhaar Download	Free	Online (Portal/App)
Child MBU (Ages 5-17)	Free (until 30 Sept 2027)	Aadhaar Centre
Address Update	₹75	Online/In-person
Biometric Lock/Unlock	Free	Online (Portal/App)