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numbo.cc VS https://open-gpt.app/

Compare numbo.cc VS https://open-gpt.app/ and see what are their differences

numbo.cc

Extract unknown phone numbers from WhatsApp screenshots with privacy-first OCR

Rating
5.0 · 3 reviews
Pricing
Freemium Free trial
Alternatives Is it good?
https://open-gpt.app/

Create ChatGPT Application in seconds

Rating
0 reviews
Alternatives Is it good?
HasData
HasData is a top web scraping platform for developers and enterprises. It delivers structured, real-time data from the web using scalable APIs and no-code tools, removing the need to manage proxies, browsers, or anti-bot systems. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Base details

Website, pricing, platforms and company facts side by side.

numbo.cc
https://open-gpt.app/
Website numbo.cc open-gpt.app
Pricing
Freemium Free trial Official pricing
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Platforms
Web Android iOS
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Company Startup from India · 1 - 9 employees · 2025 —
Listed in
Lead Generation Data Extraction WhatsApp Communication +1
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About numbo.cc and https://open-gpt.app/

In their own words, as submitted to SaaSHub.

numbo.cc
https://open-gpt.app/

Numbo is a smart, web-based tool designed to help individuals and businesses quickly extract and save unknown WhatsApp numbers in bulk. With a simple and secure interface, Numbo lets users upload chat screenshots or exports to automatically detect and collect unsaved contacts — no app...

Read more about numbo.cc

No description of https://open-gpt.app/ yet.

Features and specs

What each product offers, as listed by its team.

numbo.cc 0 features
https://open-gpt.app/ 5 features

No features have been listed yet.

  • Accessible AI Chat Interface
    Provides a user-friendly web-based interface for interacting with GPT-based AI models without needing to set up API access or coding knowledge.
  • No Installation Required
    Being a web application, it can be used directly from a browser without downloading or installing any software.
  • Potentially Free or Low-Cost Access
    Many GPT wrapper sites like this offer free tiers or lower-cost access compared to official API pricing, making AI chat more accessible to casual users.
  • Quick Setup
    Users can typically start chatting almost immediately after visiting the site, with minimal account creation or configuration steps.
  • Cross-Platform Compatibility
    Since it runs in a browser, it can be accessed from various devices including desktops, tablets, and smartphones without platform-specific versions.

Possible disadvantages

  • Uncertain Reliability
    Third-party GPT wrapper websites often depend on underlying API access that can be unstable, rate-limited, or discontinued without notice, affecting consistent availability.
  • Data Privacy Concerns
    Using an unofficial third-party service to process conversations raises questions about how user data and conversation history are stored, used, or shared.
  • Limited Transparency
    It may be unclear which underlying AI model version is being used, how up-to-date it is, or what modifications have been made to the base model's behavior.
  • Potential Hidden Costs or Ads
    Free-to-use AI wrapper sites often monetize through ads, premium upsells, or data collection, which may not be clearly disclosed to users upfront.
  • Lack of Official Support
    Unlike official AI platforms, unofficial wrapper sites may lack dedicated customer support, regular updates, or accountability if issues arise.

Analysis

An editorial look at what each product does well and who it suits.

numbo.cc
https://open-gpt.app/

Overall verdict

  • There is not enough reliable, verifiable information available to confirm that numbo.cc is a trustworthy or high-quality service, so users should exercise caution before using it.

Why this product is good

  • The site lacks widely available reviews or established reputation, making it difficult to verify its legitimacy.
  • Unfamiliar domains with generic or unclear branding can pose security and privacy risks.
  • Without transparent company information, terms of service, or customer support details, users cannot properly assess reliability.
  • There is no clear evidence of trust signals such as secure payment processing, verified user testimonials, or third-party endorsements.

Recommended for

  • Users who have independently verified the site's legitimacy and security
  • Those who only need to interact with it in low-risk ways without sharing sensitive personal or financial information
  • Tech-savvy individuals capable of assessing website safety before use

Overall verdict

  • I don't have verified, up-to-date information about open-gpt.app, and I'm unable to browse the internet to check its current status, reputation, or legitimacy. I cannot confidently vouch for or against this specific product/service.

Why this product is good

  • I lack real-time access to verify this website's current content, reputation, or user reviews
  • Domain names and their associated services can change ownership and purpose over time
  • Without verification, I cannot confirm if this is a legitimate service, its features, or its safety
  • There are many similarly-named AI tools of varying quality and trustworthiness, making specific verification important

Recommended for

  • Before using this site, research current user reviews on trusted platforms
  • Check the site's SSL certificate, privacy policy, and terms of service
  • Look for verified information about the company or developers behind it
  • Consider well-established alternatives like ChatGPT (OpenAI), Claude (Anthropic), or Gemini (Google) if you need reliable AI assistance
  • Exercise caution with any site requesting payment or personal information without clear verification of legitimacy

Videos

Walkthroughs and reviews on video.

numbo.cc 1 video + Add
https://open-gpt.app/ 0 videos + Add

Demo

No https://open-gpt.app/ videos yet. You could help us improve this page by suggesting one.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
numbo.cc
https://open-gpt.app/
100% 100%
Communication
0% 0%
100% 100%
WhatsApp
0% 0%
100% 100%
Data Extraction
0% 0%
100% 100%
Lead Generation
0% 0%

Questions & Answers

As answered by people managing numbo.cc and https://open-gpt.app/.

What makes your product unique?

numbo.cc's answer

What makes Numbo WhatsApp Contact Extractor unique is its simplicity and ease of use. You do not need to install any apps, create an account, or export chat files. Just upload a WhatsApp chat screenshot, and Numbo will extract the unknown numbers for you. It works on any device, keeps your data private, and is designed to save you time. It is a fast and safe tool for anyone who handles WhatsApp leads regularly.

Why should a person choose your product over its competitors?

numbo.cc's answer

A person should choose WhatsApp Contact Extractor because it saves time, is easy to use, and does not require installing any apps or extensions. Unlike other tools, it works directly from your browser and lets you extract contacts just by uploading a screenshot. It also keeps your data private and works smoothly on both mobile and desktop. It’s a smart choice for anyone who gets leads or unknown numbers on WhatsApp and wants a quick way to save them.

How would you describe the primary audience of your product?

numbo.cc's answer

The primary audience for Numbo includes small business owners, marketers, sales teams, freelancers, and customer support agents who regularly receive WhatsApp leads from ads, clients, or group chats. These users often struggle with manually saving unknown numbers and are looking for a faster, more efficient way to organize contacts. They value simplicity, privacy, and mobile-friendly tools that help them manage customer communication without any technical hassle.

What's the story behind your product?

numbo.cc's answer

It started with a common problem — getting lots of WhatsApp messages from unknown numbers through ads, customers, or groups, and struggling to save them one by one. Whether it was a small business owner managing leads, or a marketer handling daily inquiries, the process was slow and frustrating.

That’s when the idea for Numbo was born — a simple, web-based tool that could extract all those unknown WhatsApp contacts in seconds, just from a screenshot. No app to install, no login needed, and no complicated steps. Just upload, extract, and save.

Numbo was created to make life easier for people who use WhatsApp for business. Fast, private, and effortless — built from real needs, for real users.

Which are the primary technologies used for building your product?

numbo.cc's answer

Numbo is built using modern web technologies to ensure speed, security, and cross-device compatibility. The core stack includes:

Frontend: HTML5, CSS3, and JavaScript with frameworks like React for a smooth and responsive user experience.

Backend: Node.js with Express, designed for fast server-side processing.

OCR (Image Processing): Tesseract.js (JavaScript OCR library) is used to extract numbers from uploaded screenshots.

Security: HTTPS encryption and temporary data processing to ensure user privacy.

Hosting & Storage: Cloud-based services like Vercel or Firebase for frontend deployment, and AWS or similar for backend operations.

These technologies work together to deliver a lightweight, privacy-focused tool that runs entirely in the browser, without storing sensitive user data.

Who are some of the biggest customers of your product?

numbo.cc's answer

WhatsApp Contact Extractor like Numbo is especially popular among small businesses, digital marketing agencies, real estate consultants, coaching centers, e-commerce sellers, and customer support teams. These users often run ads on platforms like Facebook or Instagram and receive daily leads via WhatsApp. By using tools like Numbo, they can save and organize large numbers of unknown contacts quickly and efficiently — helping them improve response time, follow-ups, and customer management. While Numbo is ideal for individual professionals too, its simplicity and privacy features make it a trusted choice for business teams that rely on WhatsApp for day-to-day communication.

User comments

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

numbo.cc 5.0 · 3 reviews
https://open-gpt.app/ no reviews yet

We have no reviews of https://open-gpt.app/ yet. Be the first one to post

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