Ext Ops Panel
Open the app

ValidNum - Bulk WhatsApp Number Validator & Checker

Chrome extension by Devainer Extensions · Productivity · Workflow

A Chrome extension in Productivity · Workflow with 16 users, barely installed.

Specific sites only: 2 match patterns.

What the developer says, and 5 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
16
Rating
5.0 (1 ratings)
Users, last 10 days
+13
Rating, last 30 days
Not watched long enough to say
Version
1.0.0
Updated in the store
2026-08-18
Published
2026-08-18
Manifest
V3
Browser access
1 permission, 2 site patterns

How it has moved

Users
+13 since 01.09
3-16 · 6 readings
  1. 2026-09-013
  2. 2026-09-024
  3. 2026-09-048
  4. 2026-09-0512
  5. 2026-09-0714
  6. 2026-09-1016
Rating
unchanged since 01.09
reviewsrating 5.00 · 6 readings
  1. 2026-09-01reviews1rating5.00
  2. 2026-09-02reviews1rating5.00
  3. 2026-09-04reviews1rating5.00
  4. 2026-09-05reviews1rating5.00
  5. 2026-09-07reviews1rating5.00
  6. 2026-09-10reviews1rating5.00
Users
+13 since 01.09
3-16 · 6 readings
  1. 2026-09-013
  2. 2026-09-024
  3. 2026-09-048
  4. 2026-09-0512
  5. 2026-09-0714
  6. 2026-09-1016
Rating
unchanged since 01.09
reviewsrating 5.00 · 6 readings
  1. 2026-09-01reviews1rating5.00
  2. 2026-09-02reviews1rating5.00
  3. 2026-09-04reviews1rating5.00
  4. 2026-09-05reviews1rating5.00
  5. 2026-09-07reviews1rating5.00
  6. 2026-09-10reviews1rating5.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 2 match patterns.

  • https://web.whatsapp.com/*
  • https://extensions.devainer.com/*
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

Devainer Extensions publishes 13 listings we track, 538 users between them. Listed website: devainer.com.

  1. InstaGuard AI for Instagram - Smart Unfollow Manager Devainer Extensions · Lifestyle · Social · published 2026-04-04 220 users ★ 5.0
  2. Exportify for Instagram - Export Followers, Following, Likes & Comments Devainer Extensions · Lifestyle · Social · published 2026-06-26 125 users ★ 5.0
  3. TokSave - Video Downloader for TikTok Devainer Extensions · Productivity · Workflow · published 2026-08-23 50 users ★ 5.0
Show 5 more from this publisher
  1. TokGrow AI - Smart Auto Follow Manager for TikTok Devainer Extensions · Lifestyle · Social · published 2026-08-01 24 users ★ 5.0
  2. TokGuard AI - Smart Unfollow Manager for TikTok Devainer Extensions · Lifestyle · Social · published 2026-08-02 20 users ★ 5.0
  3. SEO Scanner Pro AI – Page SEO Analyzer & Audit Devainer Extensions · Productivity · Workflow · published 2026-06-27 19 users ★ 5.0
  4. GramFlow for Instagram - Smart Auto Follow Manager Devainer Extensions · Lifestyle · Social · published 2026-06-14 17 users ★ 5.0
  5. Fetch AI Smart Email & Phone Extractor Devainer Extensions · Productivity · Workflow · published 2026-06-16 13 users ★ 5.0

Like this one

Listings the catalog judges closest in what they say they do.

  1. WA Number Checker: Filter Valid Numbers Describes nearly the same job, smaller audience 6 users ★ 5.0
  2. WhatsApp Number Verifier Describes nearly the same job, smaller audience 28 users
  3. Bulk WA Number Checker & Validator & Search & lookup | WASBB.COM Describes nearly the same job, smaller audience 6k users ★ 4.8
  4. WAChecker - Check, Verify & Filter Number Describes nearly the same job, smaller audience 3k users ★ 3.7
  5. Numsift — Bulk WhatsApp Number Checker & Validator | Export to Excel Describes nearly the same job, smaller audience 124 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

Is this your extension?

Connect it to Ext Ops Panel and see installs, uninstalls and uninstall reasons as events arrive, not as a weekly summary.

See what the panel does

Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.