Core engine
High-volume filtering
Streams numbers through rotating accounts in configurable batches, with automatic ban detection and cool-down so a run keeps moving instead of stalling
Bulk WhatsApp filtering suite
Stop paying to message dead numbers
Check a list against WhatsApp, enrich every match with profile data, then clean what is left. Ten tools, one desktop app
0 countries 0 carrier prefixes 0 numbers per run Windows 10 & 11 · Updates included · Watch the walkthrough
Capabilities
Everything the job needs
Built around one pipeline: load numbers, filter them, enrich the matches, export the result
Image analysis
Downloaded avatars run through dedicated analysis workers that infer gender, age band and image content, letting you segment the output automatically
Channel management
Import, health-check and rotate accounts from one screen. Dead or restricted channels are detected and parked before they cost you a batch
Proxy support
Route each channel through its own SOCKS5 endpoint with per-account credentials, keeping sessions cleanly separated
Flexible export
Write results to TXT, CSV, VCF or XLSX — with embedded avatar thumbnails — and split large outputs into fixed-size chunks automatically
Built for scale
Streaming reads, batched writes and multi-stage back-pressure keep memory flat whether the list is ten thousand rows or two hundred thousand
Walkthrough
Watch the toolbox
A full pass through the generation and analysis tools
Toolbox
Ten tools, one window
Everything you need to build, inspect and clean number lists before and after a run
A sequential phone number generator: produce a continuous range from a starting number — set a quantity or an end number, optionally shuffled, with a live size estimate before you commit
Generate numbers from a file: take an existing list as the seed and expand it into new candidate numbers while preserving the source prefixes
A random prefix number generator: spread generation across several prefixes at once so the output is not a single contiguous block
A phone number generator by country: pick a country and generate from its real operator prefixes. Ships with 207 countries and 28,739 carrier prefixes
Phone number prefix lookup: see the country, operator and expected line length of any prefix before you generate against it
A number list merger: combine any number of lists into one file, with duplicate handling applied across the whole merge
A prefix analyzer: break a list down by country, carrier and prefix with counts, percentages and a distribution chart — so you know what you are about to run
A phone list splitter: cut a large file into evenly sized parts by line count or by file size
Remove duplicate phone numbers from a list, with an exact count of what was removed
A phone number formatter: add the plus sign to phone numbers or remove it — normalise a whole file to or from international `+` notation in one pass
Pricing
One product. Pick your term
The full application is included with every term. Choose how long you need it — longer terms lower the monthly rate
3 Months
133 €
/ month
Total
399 €
3 Months
Save 48 € (11%) vs monthly billing
A quarter of uninterrupted work
Full feature access
Updates included
Choose 3 Months
1 Month
149 €
/ month
Total
149 €
1 Month
Standard rate
Try it for a full month
Full feature access
Updates included
Choose 1 Month
6 Months
Best monthly rate
125 €
/ month
Total
749 €
6 Months
Save 145 € (16%) vs monthly billing
The lowest monthly rate we offer
Full feature access
Updates included
Choose 6 Months
Included with every term
No feature tiers. No hidden add-ons
- Unlimited numbers per run
- All 10 tools included
- Profile enrichment (photo, business flag)
- Image analysis — gender, age band, content
- TXT, CSV, VCF & XLSX export
- SOCKS5 proxy rotation
- Channel import and health checks
- Priority support
- Free updates for the whole period
Same-day key delivery
Secure checkout
Windows 10 & 11
About
What is PWF Checker?
PWF Checker — Premium WhatsApp Filter — is a WhatsApp number checker and filter for Windows: a desktop application that checks which phone numbers in a list are registered on WhatsApp, enriches every match with profile data and cleans the list with ten built-in tools. It is built for WhatsApp marketing, lead generation and contact-list validation, and everything runs on your own PC
Made for
- WhatsApp marketing — message only the numbers that are actually on WhatsApp
- Lead generation — turn a raw number list into contacts with photo, business flag and availability
- List cleaning — de-duplicate, normalise, merge and split lists before a campaign or a CRM import
- Number generation — build lists from the real operator prefixes of 207 countries
- Agencies and resellers — five interface languages, local SQLite storage, no cloud dependency
At a glance
- Also known as: Premium WhatsApp Filter, PWF — made by PWF Studio
- Platform: Windows 10 and 11 (64-bit), .NET Framework 4.8.1 — a desktop application, not a web or mobile app
- Languages: English, German, French, Italian, Dutch
- Exports: TXT, CSV, VCF and XLSX, with avatar thumbnails
- Coverage: 207 countries, 28,739 carrier prefixes
- Licensing: Per term — 1, 3 or 6 months — every term with the full application, all ten tools and updates
- Support: Telegram, Discord, email and the on-site chat, in five languages
FAQ
Common questions
Is the shorter plan a cut-down version?
No. Every plan unlocks the identical application with every tool and every feature. The only difference is how long your licence stays valid
How fast is my licence issued?
Once the transaction has enough network confirmations we issue the key — usually within a few hours, same day at the latest
What happens when I renew?
The new term is added on top of whatever time you have left, so renewing early never costs you days
Which network should I send on?
Whichever network is shown next to the address you copied. Sending on a different network loses the funds — this is not recoverable
What is PWF Checker?
PWF Checker, also called Premium WhatsApp Filter or PWF, is a bulk WhatsApp number checker and filter for Windows. The desktop application checks which phone numbers are registered on WhatsApp, adds profile data to every match and cleans the list with ten built-in tools. It is used for WhatsApp marketing, lead generation and contact-list validation
How does the WhatsApp number filter work?
Import a .txt or .csv list and connect your WhatsApp accounts. The numbers are checked in batches through rotating accounts; matches are separated from non-matches, enriched with the profile photo, business flag and image analysis, and exported to TXT, CSV, VCF or XLSX
Does it run on Mac, Android or in the browser?
No. PWF Checker is a Windows application for Windows 10 and 11 (64-bit) with .NET Framework 4.8.1 — 4 GB of RAM minimum, 8 GB recommended. Lists, results and image analysis stay on your own PC; the cloud platform is optional
Is there a limit on list size?
No. The engine streams the file and writes results in batches, so memory stays flat whether the list has ten thousand rows or two hundred thousand. Every licence term includes unlimited numbers per run, all ten tools and updates
Stop paying for dead numbers
Create an account, pick a plan — your key arrives the same day, and the first run takes minutes