Synology Secure SignIn

4.7
21.8K reviews
500K+
Downloads
Content rating
Everyone
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About this app

**Synology NAS and a Synology account are required for this Application.**

**DiskStation Manager 7.0 or above version with Synology Secure SignIn service enabled is required.**

Synology Secure SignIn increases account security and offers two verification methods: Approve sign-in and verification code (OTP). Approve sign-in can be used to replace DSM password. For enhanced protection, use either method as the second sign-in step of 2-factor authentication.
Updated on
Jul 31, 2025

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.
This app may share these data types with third parties
Device or other IDs
This app may collect these data types
Location, Personal info and 2 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.7
21.4K reviews
Ralph V
August 29, 2021
Too good to be true. I was happy the first 5 minutes, an Android synology app that actually works. I started porting them in one by one until I got the message "You have reached the maximum number of OTP profiles, please remove some profiles and try again" Really? Don't invest your time and effort in it... Allows 50 max.
17 people found this review helpful
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Chris Smith
September 15, 2024
The app is slow to respond and when I try to approve from my watch it always says that there is a connection problem and it fails. Then I have to wait for a timeout to occur so I can try again. It also appears that this application is using outdated algorithms and is not very secure anyway.
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M G
November 18, 2022
Works most of the time. When your session is somehow expired in this app, you cannot authenticate news sign-in through this app. When you try to re-enable authentication, you receive the wonderful message "an authentication request was sent to your mobile device". Fan-ffing-tastic since you cannot authenticate through the app because the sessions is somehow expired. Guess I'm going back to using passwords since those at least work 100% of the time.
27 people found this review helpful
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What’s new

What's New:
1. Users no longer need to re-authenticate for Auto Backup and Sync while signed in to the browser.

Fixed Issue:
1. Fixed an issue where Approve sign-in setup displayed misleading messages when using a QuickConnect connection.
2. Fixed an issue where Approve sign-in displayed a misleading error message when a user's login session had expired.

Compatibility and Installation:
1. Improved app stability when 16 KB mode is enabled in developer options.