# Synology Secure SignIn > Two-factor authentication and passwordless login for Synology accounts. (iPhone/iPad app by Synology Inc..) - Source: https://appshunter.io/ios/app/synology-secure-signin/id1513105891 (this page in markdown: same URL + `.md`) - Developer: [Synology Inc.](https://appshunter.io/developer/321493109) - Category: Utilities - Price: Free - Rating: 4.80/5 from 8,434 App Store ratings · 161 written reviews indexed - Age rating: 4+ - Requires: iOS 14.0 · 50 MB - Languages: German (Germany), Danish, American English, French (France), Italian, Japanese, Korean, Dutch, Norwegian Bokmål, Norwegian Nynorsk and 11 more - Released: 2020-12-07 - Data updated: 2026-08-27 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/synology-secure-signin/id1513105891/reviews.md ## What is Synology Secure SignIn? **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. ## Key features - Two-factor authentication - Approve sign-in requests - Verification code (OTP) - Password replacement - Enhanced account security ## What do users think of Synology Secure SignIn? Overall sentiment: neutral **Pros** - 🚀 Efficient and reliable - 🔒 Secure authentication - 👍 Easy to use - 💡 Innovative security features **Cons** - 🐛 Inconsistent performance - 🔒 Lack of biometric security - 👎 Poor user experience - 🔋 Slow push notifications **Commonly reported bugs** - Approval requests not showing up - OTP codes not working as expected - Incompatibility with some DSM versions - Unreliable login process **Most requested features** - Add Face/Touch ID validation - Improve Apple Watch integration - Implement search/grouping for OTP codes - Enhance multi-device synchronization ## Recent user reviews (10 of 161) All indexed reviews: https://appshunter.io/ios/app/synology-secure-signin/id1513105891/reviews.md ### 3/5 — Unstable *2026-08-10, version 1.3.1* Sometimes it works sometimes simply freezes ### 1/5 — Works intermittently *2026-07-31, version 1.3.1* The app works intermittently. Please fix or recommend a better app. ### 1/5 — Garbage!! *2026-07-24, version 1.3.1* Fix ur damn app!! It never damn gets the code! It’s F’n useless! It’s never worked ya bums… ### 1/5 — Funktioniert nicht! *2026-07-22* Standardmeldung ist „Verifizierungscode-Fehler“. Die kommt immer, egal ob ich den richtigen Code für den richtigen User eingebe oder irgendwas anderes. Ergebnis: Kein Login bei „Synology Photos“ möglich, katastrophal! Abgesehen davon ist die Einrichtung auf einem neuen Gerät eine volle Katastrophe. Es ist vollkommen unklar, wo der zu scannende QR Code zu finden ist. Irgendwann finde ich ihn dann doch, aber warum kann man das nicht vernünftig dokumentieren? ### 1/5 — Stupide application *2026-07-20* Faudrait quand même que les développeurs ce mettent à jour sur beaucoup de smartphone il y a plus de lecteur d’empreintes mais une reconnaissance faciale iOS cette application comme beaucoup trop chez synology est pas pris en compte ### 5/5 — Good Security Fast and Easy Signing *2026-07-10, version 1.3.1* This maintains security but makes it easier than looking up PW every time you sign in. ### 4/5 — When it works *2026-06-06, version 1.3.1* The 3 number code confirmation is in consistent and by far the best thing for 2 factor verification but the app doesn’t que up all the time I’m about 60% just doesn’t que up on my apple to 75% having to use a different way to sign in ### 1/5 — 버려 *2026-06-04* 버려 ### 5/5 — Excellent service works every time *2026-05-17, version 1.3.1* Not much to review it just works as it should! ### 5/5 — Secure sign in *2026-05-14, version 1.3.1* Works well ## Frequently asked questions about Synology Secure SignIn ### What is Synology Secure SignIn? Synology Secure SignIn is an application designed to enhance the security of your Synology account and NAS. It provides two verification methods: 'Approve sign-in' and 'verification code (OTP)', which can be used for two-factor authentication or to replace your DSM password entirely. ### What are the requirements to use Synology Secure SignIn? You need a Synology NAS and a Synology account to use this application. Additionally, your DiskStation Manager must be version 7.0 or above, with the Synology Secure SignIn service enabled. ### How does 'Approve sign-in' work? The 'Approve sign-in' feature allows you to approve or deny sign-in requests directly from your mobile device. This can be used as a second step in your two-factor authentication process, providing a convenient and secure way to verify your identity. ### Can I use this app without a Synology NAS? No, a Synology NAS and a Synology account are strictly required to use Synology Secure SignIn. The application is designed to work in conjunction with Synology's ecosystem to protect your NAS and account access. ### Is Synology Secure SignIn free to use? Yes, the application itself is free to download and use. There are no in-app purchases or advertisements mentioned, indicating it's a free utility provided by Synology. ## Version history (last 5 releases) ### 1.3.1 — 2026-05-06 Fixed Issue: 1. Minor bug fixes. 2. Fixed an issue that could cause increased memory usage over time. ### 1.3.0 — 2025-08-04 What's New: 1. Added an option to export diagnostic logs from Settings for troubleshooting. 2. Users no longer need to re-authenticate for Auto Backup and Sync when already signed in to the browser. Fixed Issue: 1. Fixed an issue where the app could freeze when using Approve sign-in to enable backup. 2. Fixed an issue where users sometimes failed to sign in with Approve sign-in after transferring backup data to a new phone. ### 1.2.3 — 2024-12-11 • Fixed an issue where incorrect error messages appeared during setup of Approve sign-in when mobile apps were not authorized for QuickConnect access. • Fixed an issue where users could not turn on Auto Backup and Sync after verifying with Face ID on iOS 18. ### 1.2.2 — 2024-06-13 1. Fixed an issue where users might not be able to re-verify an existing C2 Identity Approve sign-in account. 2. Fixed an issue where the search field's background color displayed incorrectly on iOS 14 mobile devices. 3. Fixed an issue where a format error might occur when copying a secret key from an external service to the Secure SignIn app during manual OTP setup. ### 1.2.1 — 2024-04-25 1. Fixed an issue where Approve sign-in accounts might not display correctly in the Secure SignIn app after transferring the app from another mobile device. 2. Fixed an issue that could cause inconsistencies when multiple devices automatically back up and sync accounts and profiles. 3. Fixed an issue where users might not receive Approve sign-in requests after migrating HDDs on Synology NAS. ## Apps similar to Synology Secure SignIn | App | Rating | Price | Category | | --- | --- | --- | --- | | [益电宝-数据改变未来](https://appshunter.io/ios/app/id1434796500) | — | Free | Utilities | | [佐敦](https://appshunter.io/ios/app/id1448255140) | — | Free | Utilities | | [MISD Tip](https://appshunter.io/ios/app/misd-tip/id1440174120) | — | Free | Utilities | | [Omni Relprev](https://appshunter.io/ios/app/omni-relprev/id1434690340) | — | Free | Utilities | | [GHIA KIDS](https://appshunter.io/ios/app/ghia-kids/id1434789680) | — | Free | Utilities | | [HeatNext](https://appshunter.io/ios/app/heatnext/id1440372440) | — | Free | Utilities | ## More apps by Synology Inc. - [DS photo](https://appshunter.io/ios/app/ds-photo/id321493106) - [DS audio](https://appshunter.io/ios/app/ds-audio/id321495303) - [DS cam](https://appshunter.io/ios/app/ds-cam/id349087111) - [DS file](https://appshunter.io/ios/app/ds-file/id416751772) - [DS finder](https://appshunter.io/ios/app/ds-finder/id429865523) - [DS video](https://appshunter.io/ios/app/ds-video/id540949418) All apps by Synology Inc.: https://appshunter.io/developer/321493109 ## Related topics [secure sign in](https://appshunter.io/ios/topics/secure-sign-in) · [synology secure sign in](https://appshunter.io/ios/topics/synology-secure-sign-in) · [synology secure](https://appshunter.io/ios/topics/synology-secure) · [synology](https://appshunter.io/ios/topics/synology) · [synology nas](https://appshunter.io/ios/topics/synology-nas) · [synology quick connect](https://appshunter.io/ios/topics/synology-quick-connect) · [synology drive](https://appshunter.io/ios/topics/synology-drive) · [synology surveillance](https://appshunter.io/ios/topics/synology-surveillance) · [synology chat](https://appshunter.io/ios/topics/synology-chat) · [syno manager for synology nas](https://appshunter.io/ios/topics/syno-manager-for-synology-nas) · [synology photos](https://appshunter.io/ios/topics/synology-photos) · [ds finder](https://appshunter.io/ios/topics/ds-finder) · [wurth secure logon](https://appshunter.io/ios/topics/wurth-secure-logon) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*