A menu-bar app that notices the moment your connection changes — with downtime to the second, a live signal graph, per-network reliability grades, and a one-click PDF receipt that ends ISP arguments.
Your WiFi drops. The icon changes to empty bars — no notification, no sound, no banner. You don’t notice until your video call freezes, your upload fails, or your terminal hangs. Minutes of dead-air later you reach for the WiFi menu and realize the connection died ten minutes ago.
SignalDrop is the missing notification. Built on Apple’s CoreWLAN framework, it registers for kernel-level WiFi events — the OS pushes a notification to your app the instant the link state changes, so you don’t pay the cost of finding out the slow way.
The moment your WiFi drops, you get a native macOS notification with the SSID and — on reconnect — exact downtime to the second.
One ⌘N opens a three-tab window: live nearby-network scanner with vendor identification for 38,000+ APs, real-time signal graph with hover annotations, and a 24h/7d/30d connection history with per-network rollup.
Export a branded one-page outage report — A–F grade, timeline strip, per-network breakdown, every outage timestamped. Send it to your ISP, your landlord, or your coworking space. End the argument.
Per-event toggles, minute-precision Quiet Hours that uniformly silence every category, a sound toggle, and a "Send test notification" button so you can preview your settings before a real drop happens.
Most disconnect notifiers fire on every 1-second flicker when your Mac roams between APs. SignalDrop suppresses drops below a tunable threshold across notifications, your reliability grade, and the per-network rollup. The raw log still keeps every event for the receipt.
A through F based on the last 24 hours, 7 days, and 30 days of stability — with uptime % and disconnect counts per SSID so you can see which networks deserve trust.
The menu bar icon reflects state at a glance: full Wi-Fi glyph when connected with variable strength by signal, exclamation mark when Wi-Fi is up but the internet is unreachable, slash when Wi-Fi is off, lock-with-cloud when Location Services is denied. Click for SSID, RSSI, internet reachability, and the connection-quality grade — all in one place.
SignalDrop watches RSSI and flags you when signal sustains below your threshold — with a minimum-duration suppression so a one-second dip doesn’t fire an alert. You get one signal-weak banner per real degradation event, not twenty.
Every Wi-Fi event lands in a local SQLite database. ⇧⌘C copies a paste-ready ISP receipt to your clipboard. The Connection History tab’s Export PDF (⌘E) generates a branded one-page receipt with the grade, the timeline strip, the per-network rollup, and every outage timestamped — ready to send to support.
Café Wi-Fi flaky? Home network solid? SignalDrop tracks uptime and disconnect counts per SSID across 24h, 7-day, and 30-day windows. Brief AP-roam drops are filtered automatically so your coworking-space afternoon doesn’t leave you with Grade F.
SignalDrop makes zero network requests. No analytics, no telemetry, no accounts. The event log is a local SQLite database you control — export it, delete it, ignore it. macOS requires Location permission to read WiFi network names; SignalDrop never determines or transmits your geographic location.
There are good Mac WiFi tools. Most are scanners or analyzers — heavyweight diagnostic tools for IT professionals. SignalDrop is the only one built for everyday users who just need to know when WiFi drops and prove outages to their ISP.
| Feature | SignalDrop $4.99 |
WiFi Signal $4.99 |
Wifiry $9.99 |
WiFi Explorer $19.99 |
|---|---|---|---|---|
| Instant disconnect notifications | ✓ | ✓ | — | — |
| Exact downtime duration on reconnect | ✓ | — | — | — |
| Per-network uptime tracking | ✓ | — | — | — |
| Connection-quality A–F grade | ✓ | — | — | — |
| ISP-ready outage receipt (one-click) | ✓ | — | — | — |
| "Connected but no internet" detection | ✓ | — | — | — |
| Signal-strength reading (dBm) | ✓ | ✓ | ✓ | ✓ |
| Nearby network scanner | ✓ | — | ✓ | ✓ |
| Real-time signal/noise graphs | ✓ | ✓ | — | ✓ |
| Channel-conflict analysis | v2.0 | — | — | ✓ |
| Zero polling (event-driven CoreWLAN) | ✓ | ? | ? | ? |
| No analytics or telemetry | ✓ | ? | ? | ? |
Different tools for different jobs. WiFi Explorer at $19.99 is the gold standard for IT professionals doing spectrum analysis and channel-conflict diagnosis — if you're a network engineer, get it. Wifiry at $9.99 is a solid all-rounder for signal-strength display and basic scanning. WiFi Signal at $4.99 has gorgeous real-time graphs. None of them track reliability over time, generate ISP receipts, or catch the "connected but no internet" state.
SignalDrop owns the "always-running reliability monitor" niche. Why is your Mac WiFi dropping? — full diagnostic guide with the seven most common causes.
No. macOS has never built a native WiFi-disconnect notification. The menu-bar WiFi icon goes from full bars to empty bars and assumes you'll notice — there's no banner, sound, or alert. SignalDrop adds the missing notification by registering for kernel-level CoreWLAN events and pushing a native macOS notification the instant the connection state changes.
$4.99 one-time on the Mac App Store. No in-app purchases, no subscription. The price includes all future 1.x updates. Version 1.1 (now) added the Network Insights window with a nearby network scanner, real-time signal graph, connection history with PDF export, vendor identification for 38,000+ access points, and a Settings window with quiet hours. Planned for 1.5: customizable menu bar display and roaming notifications.
macOS requires Location permission for any app to read WiFi network names (SSID) — Apple changed this in macOS 14 Sonoma. SignalDrop uses your network name solely to display it in the menu bar and notifications. Your geographic location is never determined, stored, logged, or transmitted. SignalDrop makes zero outbound network requests.
Yes. SignalDrop's one-click "Copy Receipt for Support" feature generates a paste-ready outage timeline with timestamps, durations, and a connection-quality grade. Paste it into your ISP's support chat or email — the data is concrete enough to defeat the standard "we ran a line test and everything looks fine" response.
Yes. SignalDrop ships a universal binary supporting both Apple Silicon (M-series) and Intel Macs. Minimum supported macOS is 13 Ventura.
No. SignalDrop uses Apple's CoreWLAN event-delegate API to receive kernel-level notifications when WiFi state changes — it never polls. Between events, the app is essentially idle. Battery impact is unmeasurable.
Yes. WiFi Signal ($4.99) and WiFi Explorer ($19.99) are scanner and analyzer tools for IT professionals — they focus on real-time signal display, channel analysis, and 802.11 decoding. SignalDrop is built for everyday Mac users who need to know when WiFi drops and prove outages to their ISP. It's the only app in this category that tracks long-term per-network reliability and generates ISP-ready outage receipts.
Version 1.1 adds the Network Insights window (⌘N) with three tabs — a live nearby-network scanner with vendor identification for 38,000+ access points pulled from the IEEE OUI registry plus private-MAC detection; a real-time RSSI / Noise / TX-rate graph with hover annotation and 1m / 5m / 15m / 1h time-range presets; and a 24h / 7d / 30d connection history with an A–F reliability grade, per-network rollup, and outage drill-in. Plus a one-click PDF "ISP-ready receipt" export, a Notification Settings window (⌘,) with per-event toggles and minute-precision Quiet Hours, phantom-drop suppression applied across notifications and your grade, and a state-driven menu bar icon.
Yes. SignalDrop reads band information from Apple's CoreWLAN directly (CWWLANChannel.channelBand), so 2.4 GHz, 5 GHz, and 6 GHz Wi-Fi 6E networks are classified correctly. The Scanner tab's band filter (All / 2.4 / 5 / 6 GHz) works on every M-series Mac and any Intel Mac with a Wi-Fi 6E-capable adapter.
Yes. Quiet Hours silences every notification category uniformly while the window is active — disconnects and internet-lost included. A 3am cable-modem reset will not wake you up. The outage is still logged to Connection History and the ISP receipt; SignalDrop just leaves you alone until your Quiet Hours window closes.
More questions? See the full support page or read the deep-dive guide "Why your Mac silently drops WiFi (and how to catch it)".
$4.99 one-time on the Mac App Store. No in-app purchases, no subscription, no analytics. macOS 13 Ventura or later. Universal binary. Includes every 1.x update.