Everything the app does, screen by screen and control by control - including the things it deliberately will not do, and why. Every screen adapts to your NAS, so yours may show fewer sections than a page here lists: the app hides what your DiskStation does not run rather than showing you a button that cannot work.
Three pages get you from a fresh install to a NAS you can see from anywhere.
What you need, how to add your NAS, ports and HTTPS, two-factor authentication, and what to do when it will not connect.
The health header, the quick-stats row and the card grid - and how to reorder, collapse and hide any of it.
QuickConnect, a custom domain or a VPN, and which features work over which route.
The bottom bar holds up to nine tabs plus More. Each tab is a group of sub-views you can reorder or hide.
System Health, Resources and Logs. Gauges, load average, disk I/O, temperature history, fan mode, identify, DSM update and power.
Volumes & Pools, Disk Health and External. RAID type, free space, SMART per drive, Quick SMART Test and safe eject.
Throughput, Connections, Services, VPN and DDNS with your public address.
File Station, copy and move on the NAS itself, Shared Folders, Note Station, Synology Office and Contacts.
Add by link, magnet or .torrent, control running tasks, and change the settings your NAS reported.
Package Center, Docker, Docker Projects and Virtual Machine Manager.
Synology Photos with a swipeable full-screen viewer, Synology Drive and Surveillance Station live view.
Hyper Backup tasks with real destination sizes, and Active Backup for Business devices and workloads.
Users, Task Scheduler, UPS and the app's own Settings.
Ask about your NAS in plain words, get the health verdict back, and rate its answers - it learns on your device only.
Every preference: theme and accent, dashboard cards, bottom bar, 28 languages, launch behaviour, card view, polling, temperature unit, help cards and backup.
Add, rename, reorder and switch. Each keeps its own credentials, layout and settings.
Wake the NAS, or any other machine through it - and exactly which of those works from outside your network.
Twelve widgets, each with a preview and a timestamp so a stale reading never looks current.
The synomanager:// URL scheme, launcher shortcuts, and native Siri and Shortcuts on the Mac.
Reorder and hide cards, tabs and sub-views, collapse what you do not read, and dismiss the help cards.
Export the app's own settings to a file and restore them on a new phone.
Connection failures, blank tiles, missing tabs, stale widgets - and what each message actually means.