by WhoKnew.io
1 (0 reviews)
WhoKnew Signal - Self-Hosted Web Push Notifications & PWA
Truly self-hosted web push and PWA for WordPress -- iOS, Android, Chrome, Safari. No SaaS, no Firebase, no monthly fees.
Compatible with WP 7
v2.0.0
Current Version v2.0.0
Updated 2 weeks ago
Last Update on 08 Jul, 2026
Refreshed 9 hours ago
Last Refreshed on
Rank
#62,333
-11204 this week
Active Installs
1+
-1%
KW Avg Position
71.7
—
No change
Downloads
107
+1 today
Support Resolved
0%
—
No change
Rating
20%
Review 1 out of 5
1
(0 reviews)
Next Milestone 10
0+
10+
61,546
Ranks to Climb
-
Growth Needed
8,000,000
Active Installs
Pro
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Rank Changes
Current
#62,333
Change
Best
#
Downloads Growth
Downloads
Growth
Peak
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Unlock 30-day, 90-day, and yearly download history charts with a Pro subscription.
Upgrade NowReviews & Ratings
1.0
0 reviews
Overall
20%
5
0
(0%)
4
0
(0%)
3
0
(0%)
2
0
(0%)
1
0
(0%)
Tracked Keywords
Showing 3 of 3| Keyword | Position | Change | Type | Updated |
|---|---|---|---|---|
| progressive web app | 33 | — | Tag | 16 hours ago |
| pwa | 36 | — | Tag | 16 hours ago |
| web push | 146 | — | Tag | 16 hours ago |
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Track keyword rankings, search positions, and discover new ranking opportunities with a Pro subscription.
- Full keyword position tracking
- Historical ranking data
- Competitor keyword analysis
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Start Tracking FreePlugin Details
- Version
- 2.0.0
- Last Updated
- Jul 08, 2026
- Requires WP
- 5.8+
- Tested Up To
- 7
- PHP Version
- 7.4 or higher
- Author
- WhoKnew.io
Support & Rating
- Rating
- ★ ☆ ☆ ☆ ☆ 1
- Reviews
- 0
- Support Threads
- 0
- Resolved
- 0%
Keywords
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Frequently Asked Questions
Common questions about WhoKnew Signal - Self-Hosted Web Push Notifications & PWA
For most sites, yes. WhoKnew Signal includes a Web App tab that generates and serves your manifest.json, configures your app icon, theme color, display mode, and injects required meta tags. Install on Phones ([wkspn_install_buttons]) is included in Pro for smart install buttons on Android and a guided iOS walkthrough. If your only reason for a separate PWA plugin was the manifest or iOS push setup, you can often use WhoKnew Signal alone. If you are using a separate PWA plugin only for advanced offline caching strategies beyond Signal's built-in network-first caching, you may keep both - they will not conflict.
Yes. iOS Safari 16.4+ supports Web Push when the site is installed to the Home Screen as a Progressive Web App (PWA). WhoKnew Signal configures everything required: the web app manifest, the Apple touch icon, and the meta tags that tell iOS how to display your site when installed. To receive push notifications on iPhone or iPad: open your install page in Safari (use the Install on Phones shortcode or share manual steps), tap Add to Home Screen, open the installed app once, then grant notification permission. From that point on, they receive push notifications exactly like a native app. iOS support is included in the free version at no extra charge.
Chrome on iOS uses Apple's WebKit rendering engine, not Chromium. Apple requires all iOS browsers to use WebKit, which means Chrome on iOS does not support Web Push. This is an Apple platform limitation that applies to every push notification plugin. The only way to receive push on iOS is through Safari with the site installed as a PWA.
No. WhoKnew Signal sends directly from your WordPress server to the browser's delivery network - Chrome uses Google's FCM, Firefox uses Mozilla's relay, Safari uses Apple's push service. These are free delivery pipes that every browser already uses. You do not pay for them, sign up for them, or store any data on them. Your subscriber list lives entirely on your server.
No. The free plugin operates entirely between your WordPress server and your visitors' browsers. It does not phone home, send analytics, contact a license server, or make any external API calls. The only outbound connections it makes are the push notification deliveries themselves - sent directly from your server to the browser's push delivery network. No WhoKnew server is ever involved.
Yes. Because subscriber endpoints are stored on your WordPress server (not on a push SaaS), you can migrate with WhoKnew Signal: Export your VAPID keys (Settings > Backup & Migration > Export Key Backup) Export your push subscribers (Settings > Backup & Migration > Download CSV - Pro feature) Install WhoKnew Signal on the new server and restore the VAPID key backup before any visitors load the page Import the push subscriber CSV (Settings > Backup & Migration > Import) Your existing subscribers will continue receiving notifications without re-subscribing. This even works across domain changes.
Yes -- and it happens automatically, with no effort from you or your visitors. Switching push plugins normally means losing your subscriber list. Visitors who already granted permission to the old plugin can never be shown a native browser permission prompt again, so they silently disappear and cannot re-subscribe. WhoKnew Signal detects this situation automatically. When a returning visitor has an active push subscription that belongs to a different plugin or service, WhoKnew Signal silently cancels that old subscription in the browser, then displays its own soft-ask popup. In most cases the browser already has permission granted and re-subscribes without a native dialog -- the visitor simply clicks "Allow Notifications" on the WhoKnew popup and they are re-enrolled instantly. In some cases (for example if the browser reset the permission in the background, or on certain mobile Chrome versions) a brief native confirmation may still appear, but the visitor is never asked to grant permission from scratch. This works for any service using the VAPID web push standard: OneSignal, Push Notifications for WordPress by magazine3, PushEngage, and others. Visitors who were never subscribed to any push service see the normal two-step popup flow (soft-ask, then native browser prompt) on their first visit. Existing WhoKnew Signal subscribers are never affected.
The free plugin discovers WooCommerce and other public post types in Settings; auto-send on publish is included for blog posts. WhoKnew Signal Pro unlocks auto-send for products and other post types, plus WooCommerce automation: order notifications to linked WordPress accounts (processing, completed, refund), abandoned cart recovery, and broadcast triggers for new products, back in stock, and price drops.
When a visitor subscribes, WhoKnew Signal stores their subscription status in both a browser cookie and localStorage. If the cache is cleared, whichever storage survives picks up immediately. If both are cleared but the browser's underlying push subscription is still active, the plugin silently re-registers the subscriber in the background on their next visit. No popup re-appears, no duplicate entry is created.
No. The free plugin includes unlimited active subscribers. There is no 250-subscriber cap, no trial expiration on your list size, and no requirement to upgrade just to keep accepting new subscriptions. Upgrade to Pro when you want growth tools (Install on Phones, background sends, WooCommerce automation, segmentation, analytics, scheduling) - not because your audience outgrew a free quota.