BulkNumberChecker vs CheckNumber.AI, WABulk, SheetWA (2026 Comparison)
Every other bulk WhatsApp number checker eventually asks for a credit card. We do not. This page lays out the differences in pricing, features, and risk so you can choose the right tool for your list.
Side by side feature table
| Tool | Price | Free Tier | Bulk Upload | Signup | API | CSV Export | Speed |
|---|---|---|---|---|---|---|---|
| BulkNumberCheckerus | Free | Unlimited | Up to 1,000 per batch | None | Planned, no credits | Yes | ~20 numbers/sec |
| CheckNumber.AI | $9 to $15 / 1k | 50 numbers trial | CSV, credit gated | Required | Yes, credits | Yes | ~15 numbers/sec |
| WABulk | $29/month | 7 day trial | Chrome extension | Required | No | Limited | Depends on browser |
| SheetWA | $19/month | Limited rows | Google Sheets | Google login | No | Sheet only | ~5 numbers/sec |
| WhatsABot | Free 10/day, then $12/mo | 10 numbers/day | Pro only | Required | Pro only | Pro only | ~8 numbers/sec |
Unlimited free volume
No daily quota, no metered credits, no surprise invoice at the end of the month. Validate 500 or 50,000 numbers for the same price: zero.
No account, no data trail
Competitors bind your list to a billing profile. We never ask for an email, never store your numbers past the result TTL, and never resell leads.
Server side, not an extension
Your personal WhatsApp account is never used. The work happens on isolated pool sessions, so there is no ban risk for you.
BulkNumberChecker: what we actually offer
BulkNumberChecker is a server-rendered web app that accepts up to one thousand numbers per batch, either pasted directly or imported from a CSV. Results come back within seconds with a clear active or inactive status, country detection, and a one-click CSV export. There is no login, no trial clock, and no per-check charge. The service is funded by simple banner ads on the result screen, which is why we can commit to staying free for the long term.
- Unlimited batches, unlimited days
- Works with international formats (E.164)
- Drag and drop CSV upload
- No signup, no cookie wall
CheckNumber.AI: the credit-based benchmark
CheckNumber.AI is the most established paid tool in this space. It offers a clean API and a reliable dashboard, but every query consumes a credit. Credits sell in packs starting around nine dollars per thousand numbers and scale to bulk packs in the hundreds of dollars. The free trial hands you roughly fifty numbers, which is enough to confirm the product works but not enough to clean a real marketing list. For anyone running weekly hygiene on lists over a few thousand contacts, the monthly spend adds up quickly.
Mature API, good documentation, established SLA for enterprise tiers.
Credits expire, pricing bites on high volume, signup and KYC required before the first real test.
WABulk: Chrome extension, personal account risk
WABulk is a browser extension that automates WhatsApp Web inside your own session. Because it logs in with your personal number, WhatsApp can and sometimes does flag the account for automation. Pricing starts near twenty nine dollars a month after a short trial. If you are running outreach from a business number you actually use for customer conversations, delegating bulk checks to a server-side service like BulkNumberChecker is safer.
Integrates with existing WhatsApp Web workflow, no separate dashboard to learn.
Ties validation to your personal number, ban risk, browser must stay open, no headless API.
SheetWA: Google Sheets, monthly seat fee
SheetWA lives inside Google Sheets as an add-on. The appeal is obvious for teams already living in spreadsheets, but the tool charges roughly nineteen dollars per month per editor, throttles free rows, and locks results to that single sheet. If you export numbers into BulkNumberChecker, validate for free, and paste the CSV back into Sheets, you recreate the SheetWA workflow at no cost.
Zero context switching for sheet-heavy teams, formulas update inline.
Per-seat pricing, limited rows on free tier, locked to Google account, slow on large sheets.
WhatsABot: generous trial, then a paywall
WhatsABot offers ten free checks per day, which is useful for a quick sanity test but useless for any real bulk job. Past the daily cap, a Pro subscription of around twelve dollars a month unlocks proper CSV handling. For a freelancer validating a single client list per week, the free tier will not cover a single run.
Simple UI, instant feedback for tiny tests.
Daily cap is too tight for real bulk work, CSV export locked behind Pro, signup required.
The only truly free unlimited bulk checker
Every paid tool above gates something: credits, seats, daily caps, or Chrome permissions. BulkNumberChecker gates nothing. Try a batch right now and compare the result quality yourself.
Start checking freeCommon questions about the comparison
Is BulkNumberChecker really 100% free, or is there a hidden paywall?+
BulkNumberChecker is genuinely free. There is no credit card, no trial that converts to a paid plan, no per-number charge, and no daily cap that unlocks with payment. The service is supported by unobtrusive ads on the result page, which is how we keep bulk validation free for everyone.
How does BulkNumberChecker compare to CheckNumber.AI on price?+
CheckNumber.AI charges roughly $9 to $15 per 1,000 numbers on a credit-based model, billed in advance. BulkNumberChecker charges nothing for the same volume. For agencies running weekly cleanups of 50,000+ numbers, that difference is thousands of dollars per year.
Why is WABulk a Chrome extension and BulkNumberChecker a web app?+
WABulk injects JavaScript into WhatsApp Web, which ties it to your logged-in WhatsApp account and puts your personal number at risk. BulkNumberChecker runs server-side using a pool of isolated sessions, so your own WhatsApp account is never touched.
Can I keep my data in Google Sheets like SheetWA offers?+
Yes. Export the BulkNumberChecker result as CSV, then import it into any Google Sheet. You avoid SheetWA's monthly subscription and keep the data portable across tools.
Is a free tool accurate enough for paid ad campaigns?+
Accuracy depends on the check method, not the price tag. BulkNumberChecker queries the same WhatsApp registration endpoint paid tools use, so the result is equally reliable. You save money, not quality.