Stable signalNo paid features detectedMedium-risk permissions

Wa2in - WA Number Checker

Provides an efficient way to check whether a WhatsApp number is enabled.

Users1KCurrent public install base

Rating4.9Store average score

Reviews177Public review volume

Manifest versionV3Extension platform version

7-day growth0Net users gained this week

7-day growth rate0%Relative weekly velocity

Preview

Wa2in - WA Number Checker Media preview

2 assets

Trend

User growth trend

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User Growth Over Time

Rating trend

7-day rating trend

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7-day rating change

Start

4.86

Latest

4.86

7-day rating change

0.00

2026年7月16日2026年7月22日

Growth overview

Daily, weekly, and monthly growth

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1-day growthFlat

00%

7-day growthFlat

00%

30-day growthGrowing

+15+1.52%

Technical snapshot

Version, languages, and crawl freshness

Review publication date, version, supported languages, and crawl timestamps.

Version21.1.16

ManifestV3

Size2.4MiB

Languages54Deutsch / English / English (United Kingdom) +51

Published--

Store updated--

Last crawled--

Overview

Product summary

Review the store description, core capabilities, and common use cases.

WA Number Checker is an intelligent tool that can verify, check, and filter WhatsApp numbers, providing you with an efficient, convenient, and secure contact number management experience.

This extension is not only the ideal choice for checking and filtering WhatsApp phone numbers, but also can verify active WhatsApp numbers, offering comprehensive number management functions.

As the preferred WhatsApp number checker, filter, and validator extension, it provides marketing and sales companies with very practical functions, allowing easy filtering of bulk contact lists from any country/region with number ranges.

🟥 How to get started?

Simply log in to web.whatsapp.com, scan to log in, open the tool, enter the numbers you want to query, and then click "Start Checking" to quickly see if there is a bulk list of WhatsApp numbers.

🟥 Key features include:

Reviews

Recent review snapshot

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Store average score4.9Chrome Web Store aggregate rating, including ratings without synced review text

Synced text average4.9Average computed only from synced review bodies below

Reviews with text120Synced review bodies

Total ratings / reviews177Chrome Web Store public rating/review count

Store average score: 4.9. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5★

109

4★

3★

2★

1★

Cristiano Sena da costa2025年1月15日

Excelente até o momento

Research Intensify2025年1月1日

GOOD

Gina Wardini2024年12月13日

goood

Arun Kumar2024年12月6日

GOOD

Mozart Boppre2024年12月5日

Excelente para avaliação em grande quantidade

5120 OIL SEAL 072024年12月2日

Good App

A. Tarmuji2024年11月26日

goodd

vodafone idea2024年11月14日

excelent

Clean Star2024年11月13日

GOOD

ariefbros2024年11月13日

this is perfect

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AI product read

WhatsApp Number Verification and Bulk List Filtering

Helps users verify which phone numbers are registered on WhatsApp and filter bulk contact lists to identify active WhatsApp users, saving time for marketing and sales teams.

User logs into web.whatsapp.com via browser, opens the extension popup, enters phone numbers to check (or uploads a bulk list), clicks 'Start Checking', and views results showing which numbers are active on WhatsApp. Results can be saved to history and exported as CSV.

Target users: Marketing and sales companies / Businesses managing contact lists / Users wanting to verify WhatsApp numbers in bulk

The extension code is heavily minified and obfuscated, making it difficult to trace exact API calls and login flows. The content scripts are large (3.2MB) and minified, so grep searches may miss context. The extension relies on wa2.in backend services (sa.wa2.in) which are not fully inspectable from the source alone. The 'premium' keyword matches in locale files appear to be unrelated search terms or SEO spam, not actual paid feature references.

Monetization

No paid features detected

The extension source code does not contain any payment integration, subscription gating, or billing logic. The keyword matches for 'premium' and 'pro' in the static analysis are false positives from minified code (e.g., CSS variables, library code like Chart.js, or locale files containing unrelated search terms). The extension appears to be free to use, though the destination service wa2.in may have its own paid plans unrelated to this extension's functionality. The extension itself does not gate features behind a paywall or call payment APIs.

Confidence: 85
Payment platform: --
Source: AI / Medium
Login required: Yes
Reason: The extension's core workflow requires the user to first log in to web.whatsapp.com (scan QR code) to authenticate the WhatsApp session. The extension content scripts are injected into web.whatsapp.com and wa2.in. Without an active WhatsApp Web session, the number checking functionality cannot operate as it relies on the authenticated WhatsApp Web environment to verify numbers. The extension itself does not implement a separate login UI but depends on the destination service's authentication.

Permission risk

Medium-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

扩展能力较强：storage

Publisher

si6427339

Independent publisher

Email: [email protected]
Phone: --
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