SignalBar

What's new

• Battery health on the System page. The Battery card now shows Maximum Capacity, Cycle Count and Condition, the same figures as System Information → Power, plus an estimate of the time remaining (or time until full while charging). Condition turns to Service Recommended when macOS flags the battery or its maximum capacity drops below 80%. Macs without a battery are unaffected
• I/O wait, shown separately. The CPU card on a server's detail pane shows the I/O wait figure under the CPU bar whenever it reaches 1%, and highlights it in orange from 50%, the clue that a server's iowait counter is stuck rather than the machine being busy

Fixed

• Remote servers were reported at 100% CPU when the kernel counted their idle time as I/O wait. Busy percent is now 100 − idle − iowait, so a server that is waiting on disk, or whose iowait counter is stuck at zero load, no longer looks pegged and no longer triggers a false CPU alert
• The URL placeholder in Add Target and the recipient placeholder in Email Report rendered half blue; they are now a single color

Changed

• The Add/Edit Target and Add/Edit Server sheets show their section symbol before the title, so you can tell at a glance what kind of thing you are editing

What's new

• Webhook alerts: every alert can also go to a Slack, Discord or plain-JSON webhook, sent straight from your Mac, so you hear about a down site even when you are not at it
• Run on multiple servers: in Server Manager, restart a service, reload nginx, or check disk and uptime on several servers at once, with a result line per server. Each server's own allowlist still decides what it accepts
• Remote resource alerts: turn on Monitoring for a server and get alerted when its CPU, RAM or disk crosses the threshold you set
• Scheduled cleanup: pick the caches you want cleared and let it run daily, weekly or monthly. Everything goes to the Trash, never deleted outright, and the Trash itself is never emptied on a schedule. The Settings page shows what the last run did
• p50 / p95 response times beside every latency chart, computed over successful checks only, so a timeout or a refused connection cannot skew the picture
• Vietnamese, everywhere: the Vietnamese interface now covers Server Manager, Cleanup and every Settings page, and figures inside sentences (intervals, day of month, percentiles) are translated correctly

Security

• Email reports now need a one-time verification: reports are only delivered to an address you have confirmed with a 6-digit code (Settings → Email Report → Send Verification Code). This closes a hole that let the report endpoint be pointed at any address. If you had email reports on before, you will see an "unverified" notice until the code is entered, and the Settings page now tells you whether the last report went out
• Hostnames that quietly resolve to a private or local address are refused for monitoring

Fixed

• Email reports were never being delivered because the app was contacting the wrong server. Corrected, and the test button now says why a send failed instead of just "failed"
• Server stats load over one SSH session instead of five, so Refresh is noticeably faster
• A remote command that timed out no longer leaks its connection
• Cleanup no longer counts nested caches twice, and one locked file no longer hides how much was actually cleared
• Waking from sleep no longer sends a duplicate report or alert
• A slow site that then goes down no longer triggers a false "recovered" alert
• Long jobs (server polls, scheduled cleanup) no longer pause domain checks while they run

Changed

• Automatic update checks ask for your permission the first time you launch this version, instead of being always on. Change your answer any time under Settings → Updates

What's new

• Default check interval: Settings → Health Checks has a preset picker (1 / 5 / 10 / 15 / 30 minutes / 1 hour, default 5 minutes) that pre-fills the re-check interval for newly added domains. Existing domains keep their own interval, still editable per domain

Improved

• Add a domain without typing http:// or https://: enter example.com and it is saved correctly, with https:// added automatically. Typing a full URL still works as before
• Number fields in Settings (failure count, slow-response time, SSL/domain alert days, temperature/battery thresholds, history retention) can be typed directly instead of clicking a stepper one increment at a time

Performance update: this release focuses on reducing background resource usage, with no user-facing feature changes.

Improved

• Lower background CPU and process overhead: the menu bar stats and system-alert checks no longer spawn helper processes (route, networksetup, ifconfig, ioreg) on every refresh. They only compute what is actually displayed (CPU, RAM, temperature, battery) and skip network/GPU lookups that were being recalculated needlessly
• Cached network info: the active network interface/Wi-Fi name is cached for 30 seconds instead of being re-resolved on every poll in the System window
• Lighter menu bar refresh: the menu bar updates every 5 seconds instead of every 3, still responsive with less background work over time
• The System window (full stats: network, GPU, disk, swap, fans) is unaffected and continues to refresh live when open

Improved

• Deleting a domain (from the list or in bulk) asks for confirmation first, so it can no longer happen by accident
• The menu bar icon turns into a red warning triangle when any domain is down, no need to open the menu to notice
• The domain detail screen updates live while it is open, instead of freezing at whatever it showed when opened
• A single brief network blip (a timeout or DNS hiccup) no longer immediately triggers a "down" alert; it is retried once first
• Domain expiry checks recover automatically after a temporary network failure, instead of silently falling back to the slower method for the rest of the session
• An extra check runs right after your Mac wakes from sleep, instead of waiting for the next scheduled interval
• Adding or editing a domain catches an incomplete URL (like "http://" with no address) immediately, instead of letting it through to fail later
• Accessibility: VoiceOver labels for status indicators

Fixed

• Closing the window (instead of quitting) could leave an empty "ghost" tile behind in Stage Manager

What's new

• "Check for Updates…" is now also available from the app menu (previously only in the menu bar icon)

Improved

• More reliable update checking, so new releases are detected correctly

Fixed

• Reopening the app from the Dock (after closing the window but leaving the app running) could open a duplicate window
• Selecting "System" under Appearance did not switch back to match your Mac's Light/Dark setting if a specific theme was chosen before

Rebuilt from the ground up as a fully native macOS app (Swift/SwiftUI), replacing the previous Tauri-based version.

Changed

• Same features as before: uptime/SSL/domain monitoring, system stats, email reports
• Runs natively, with lower memory and CPU usage and a snappier UI
• Automatic updates now use Sparkle; this is the first release on the new mechanism

What's new

• Quick status filters on the Domains page (Up / Down / Not checked / Paused / Disabled): tap a filter chip to narrow the list, combinable with search

Fixed

• The app became extremely laggy after being asleep or in the background for a long time: it tried to "catch up" on every missed check at once when waking up. It now simply resumes.
• The app icon appeared oversized on older macOS versions because the artwork lacked safe-area padding

What's new

• Email reports and test emails no longer need your own SMTP account: enter the address you want them sent to and DKB Monitor handles the rest
• The Uptime card on the System tab shows exactly when your machine started up, alongside the duration

Changed

• Refreshed app icon and domain search bar

Fixed

• The sidebar lost its highlight when browsing Settings sub-pages or a domain's detail page

What's new

• Notifications are clickable: clicking one brings the app forward and opens the relevant page
• "Since <time>" line on the Uptime card

Changed

• Removed the redundant "Test notification" button ("Send test email" is still available)
• Restyled the domain search bar

Fixed

• The sidebar did not highlight the active tab on some pages

What's new

• CPU/SoC temperature, fan speed, battery and uptime in the System tab
• CPU and temperature trend charts (last 1 minute)
• Optional alerts for high temperature and low battery
• Temperature and battery in the menu bar dropdown

Fixed

• The battery indicator showed red at a near-full charge

Fixed

• A domain group sometimes appeared twice, with actions on one copy affecting the other
• Notifications defaulted to on before the system permission was actually granted

What's new

• Multi-select and bulk actions (check now / enable / disable / delete) on the Domains page
• "Check all now" button
• Domain picker in Export, so you can export specific domains instead of all of them
• Cmd+K / Ctrl+K jumps to the search box
• Alerts for slow response times, in addition to the existing downtime alerts
• Pause/resume ("maintenance window") per domain
• Incident timeline on the domain detail page, grouping consecutive failures together
• Day-by-day picker for check history
• Full actions menu (Check now, Pause/Resume, Edit, Delete) on the domain detail page

Improved

• Leaving the Name field blank now falls back to the URL instead of showing an error

Changed

• The theme and language switcher moved into the Settings page

What's new

• "Check now" option in each domain's menu, to check it immediately without waiting for its next scheduled check

Fixed

• The app icon rendered larger than other Dock icons on a fresh install

What's new

• Export and import your domain list (Settings → Alerts & Data)
• "Clear all domains" option with a confirmation prompt
• Protection against adding the same URL twice

Fixed

• Reopening the app from the Dock or Launchpad did nothing while it was already running in the background
• The enable/disable toggle on a domain row sometimes opened that domain's detail page instead of toggling it
• "Launch at Login" created a duplicate entry in System Settings

First public release.

What's new

• Add, edit and monitor unlimited websites (HTTP, SSL and domain expiry checks) with a live Overview
• Automatic grouping by root domain, with drag-and-drop reordering
• A detail page per target with uptime stats, expiry countdowns and a latency chart
• Menu bar icon with live status, plus native notifications on downtime, recovery and expiry warnings
• Scheduled email reports
• A System tab with CPU, RAM, disk and GPU stats
• Light/dark theme and English/Vietnamese
• Windows support alongside macOS
• Automatic in-app updates