# Defined.ai vs WAChecker — Bulk WhatsApp Number Checker

Defined.ai records 146,251 monthly visits with -21% month-over-month growth and Contact for Pricing pricing. WAChecker — Bulk WhatsApp Number Checker records 4,088 monthly visits with +112.6% growth and freemium pricing.

| Metric | [Defined.ai](https://openaitools.app/tool/definedcrowd-com) | [WAChecker — Bulk WhatsApp Number Checker](https://openaitools.app/tool/wachecker) |
| :--- | :--- | :--- |
| Website URL | https://defined.ai | https://wachecker.wadesk.io |
| Categories | Other | Other |
| Pricing Model | Contact for Pricing | freemium |
| Monthly Visits | 146,251 | 4,088 |
| MoM Growth Rate | -21% | +112.6% |
| Primary Market | United States | India |
| Direct Visits | 84,423 | 1,664 |
| Review Score | 4.4 | 3.8 |
| Saved Count | 1 | 0 |
| Supported Platforms | Website | Website |

## Defined.ai

Defined.ai supports the full AI data lifecycle, from sourcing and collection through annotation, machine translation, conversational data and model evaluation. Its AI Data Marketplace offers off-the-shelf datasets spanning audio, image, video, text and multimodal formats, with advanced filters so teams can find data matching specific technical requirements such as content type, file format, sample rate and bit depth, then request free samples and quotes.

Beyond off-the-shelf data, Defined.ai delivers custom services: model-in-the-loop data annotation for text, audio, image and video, global data collection, multilingual machine translation and conversational AI datasets designed to be natural and bias-free. Work is delivered via file transfer or API so teams can begin training quickly, and services are positioned as enterprise-grade with respect to privacy, security and compliance.

The company emphasizes ethical sourcing and governance. It states ISO 27001, 27701 and 42001 accreditation, GDPR and HIPAA compliance, and fair working conditions, and works with a crowd of over 1.6 million experts across 150+ countries and 500+ languages, dialects and locales. It also offers Accelerat.ai for multilingual AI agent support.

**Pricing & Plans:** Defined.ai does not publish standard list prices; datasets and services are quoted per project. Teams can browse the marketplace, access free dataset samples and request quotes, with pricing depending on dataset type, customization, volume and delivery method.

- **AI Data Marketplace:** A large selection of ready-to-use, ethically sourced datasets across audio, image, video, text and multimodal formats, with advanced filtering and free samples.
- **Data annotation & model-in-the-loop:** Expert-verified labeling for text, audio, image and video using model-first, human-in-the-loop workflows for accuracy and fairness.
- **Machine translation & multilingual data:** High-quality multilingual content for global AI systems, drawing on 500+ languages, dialects and locales.
- **Custom data collection:** Global, diverse data collection at scale for training, with privacy and security vetting on every dataset.
- **Data & model evaluation:** Rigorous testing of datasets and models to ensure accuracy, fairness and quality before deployment.

**Strengths:** One of the largest marketplaces of ready-to-use AI training datasets; Full lifecycle services from collection to annotation and evaluation; Strong compliance posture (ISO 27001/27701/42001, GDPR, HIPAA); Global crowd of 1.6M+ experts across 150+ countries and 500+ languages

**Limitations:** No public list pricing; quotes required for datasets and services; Enterprise-oriented, which may be heavy for small hobby projects; The legacy definedcrowd.com domain now routes to a restricted access gateway rather than a public product page

[Profile (Markdown)](https://openaitools.app/tool/definedcrowd-com.md)

## WAChecker — Bulk WhatsApp Number Checker

WAChecker is built for anyone who works with large WhatsApp contact lists — marketing teams, sales reps, and agencies — and needs to know which numbers are actually registered before sending messages. Installing the extension and opening WhatsApp Web is enough to start: you paste or import an XLSX list, and the tool paces checks through your own live session rather than through an official API, so no WhatsApp Business API application or approval is involved.

Once a task runs you get a dashboard with per-number statuses, a live progress bar, and running totals for registered, not-found, and pending entries. Duplicate numbers are detected and flagged automatically, and configurable intervals let you keep long runs at a controlled pace. Finished tasks are saved as history, so you can revisit or reuse a list later, and the filtered valid numbers export straight to Excel with fields such as the valid status, original number, and formatted international number — handy for CRM import.

Privacy is the product's other selling point: imported lists and checking results are processed inside the extension and stored in its local storage, never uploaded to a WAChecker server. WAChecker is part of the WADesk family — WADesk is a separate WhatsApp CRM for managing multiple accounts and team follow-ups, and WAExport is a related export tool. The makers state clearly that WAChecker is not affiliated with WhatsApp Inc., and the FAQ is refreshingly honest: no tool can guarantee your account will not be restricted, and a registered number only proves the number exists, not that its owner is a buyer or has opted in.

**Pricing & Plans:** Freemium: new users get 3 days of unlimited checking with no credit card, then a standard free allowance of 50 checks per day. You can unlock extra unlimited days by leaving a 5-star Chrome review (+3 days) or sharing a promo (+1 day, repeatable).

- **Bulk Verification from a List:** Paste numbers one per line or import an XLSX list and check WhatsApp registration status in bulk through your current WhatsApp Web session.
- **Status Filtering & Duplicate Detection:** Sort results into registered, not-found, and pending with one click, and automatically mark duplicate numbers before outreach.
- **Configurable Pacing:** Set checking intervals to run long validation tasks at a controlled speed that fits your workflow.
- **One-Click Excel Export:** Export the filtered valid numbers to Excel, including status, original number, and formatted international number for CRM import.
- **Local, No-API Processing:** Lists, tasks, and results stay in the extension's local storage — nothing is uploaded — and no WhatsApp Business API approval is required.

**Strengths:** No WhatsApp Business API application or approval needed — install and start; Lists and results stay in local extension storage rather than a server; Clear registered / not-found / pending filtering plus automatic duplicate detection; History is saved for every task, so lists can be reused

**Limitations:** Requires Chrome and an active WhatsApp Web session to work; The free tier caps you at 50 checks per day after the 3-day unlimited trial; Checking registration status never guarantees message delivery or that an account won't be restricted; No mobile app, and features depend on the stability of the WhatsApp Web session

[Profile (Markdown)](https://openaitools.app/tool/wachecker.md)

## Frequently Asked Questions

### How do Defined.ai and WAChecker — Bulk WhatsApp Number Checker compare in monthly traffic?

Defined.ai has 146,251 monthly visits, while WAChecker — Bulk WhatsApp Number Checker has 4,088. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Defined.ai has a month-over-month growth rate of -21%; WAChecker — Bulk WhatsApp Number Checker has +112.6%.

### How does pricing compare?

Defined.ai: Contact for Pricing. Defined.ai does not publish standard list prices; datasets and services are quoted per project. Teams can browse the marketplace, access free dataset samples and request quotes, with pricing depending on dataset type, customization, volume and delivery method. WAChecker — Bulk WhatsApp Number Checker: freemium. Freemium: new users get 3 days of unlimited checking with no credit card, then a standard free allowance of 50 checks per day. You can unlock extra unlimited days by leaving a 5-star Chrome review (+3 days) or sharing a promo (+1 day, repeatable).

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ModelScope](https://openaitools.app/tool/modelscope-community) | 3,085,423 | +5.1% | Free | Open-source model and dataset hub with one-click online demos | [.md](https://openaitools.app/tool/modelscope-community.md) |
| 2 | [ExportTok](https://openaitools.app/tool/exporttok) | 2,782,229 | +9.2% | Freemium | Pull TikTok comments into CSV or Excel without logging in | [.md](https://openaitools.app/tool/exporttok.md) |
| 3 | [Roboflow](https://openaitools.app/tool/roboflow) | 1,431,204 | +6.6% | Freemium, Contact for Pricing | Streamlines computer vision dataset annotation and model deployment, but lacks the broad human crowd-sourcing services of Defined.ai. | [.md](https://openaitools.app/tool/roboflow.md) |
| 4 | [Bright Data](https://openaitools.app/tool/bright-data) | 802,752 | -5.9% | Free Trial, Paid | Web data infrastructure for scraping, proxies, and AI-ready datasets | [.md](https://openaitools.app/tool/bright-data.md) |
| 5 | [Labelbox](https://openaitools.app/tool/labelbox) | 762,803 | -22.8% | Contact for Pricing | Comprehensive enterprise data labeling platform with powerful automation agents, but carries significant pricing overhead for smaller teams. | [.md](https://openaitools.app/tool/labelbox.md) |
| 6 | [Arize AI](https://openaitools.app/tool/arize-com) | 249,028 | +3.2% | Paid, Contact for Pricing | Agent observability, evaluation, and continuous improvement for production AI | [.md](https://openaitools.app/tool/arize-com.md) |
| 7 | [Encord](https://openaitools.app/tool/encord-com) | 244,204 | +9.4% | Contact for Pricing | Advanced multimodal data infrastructure for computer vision teams, though specialized primarily in video and image annotation. | [.md](https://openaitools.app/tool/encord-com.md) |
| 8 | [Label Studio](https://openaitools.app/tool/label-studio) | 137,199 | -16.1% | Contact for Pricing, Free | Open-source data labeling and evaluation platform offering full self-hosting control, but requires manual setup and infrastructure maintenance. | [.md](https://openaitools.app/tool/label-studio.md) |
| 9 | [EchoTik.live](https://openaitools.app/tool/echotik-live) | 97,102 | +6.7% | Freemium | TikTok Shop analytics for products, creators, LIVE commerce and competitors | [.md](https://openaitools.app/tool/echotik-live.md) |
| 10 | [Chargeblast](https://openaitools.app/tool/chargeblast-ai) | 96,707 | -12.9% | Paid | Stop chargebacks before they are filed | [.md](https://openaitools.app/tool/chargeblast-ai.md) |

---
Source: https://openaitools.app/compare/definedcrowd-com-vs-wachecker

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)