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Mastros.online WhatsApp Scraper
Mastros.online
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Rocket for WhatsApp
A private and seamless way to view WhatsApp chat exports.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | fathomhq.com | chatparser.online |
| Pricing | — | |
| Company | — | Startup from Sri Lanka · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Fathom yet.
Free WhatsApp chat viewer to open exported chats instantly. Upload .txt or .zip files and explore your chat history privately in your browser.
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
2019 Giant Fathom Test Ride and Review
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Fathom and ChatParser.
ChatParser's answer:
ChatParser stands out because it uses a fully client-side (zero-server) architecture, meaning all chat processing happens directly in the user’s browser. Unlike other tools that upload sensitive data to servers, ChatParser ensures complete privacy.
It also recreates WhatsApp chats in a realistic, app-like interface, making exported conversations easy to read, search, and explore. Combined with fast performance and offline capability, it delivers a smooth and secure experience without requiring installation or login.
ChatParser's answer:
It is faster, more private, and easier to use. No data upload, no login, and works instantly with large chat files.
ChatParser's answer:
Anyone who exports WhatsApp chats and wants an easy, secure way to view them, including students, professionals, and everyday users.
ChatParser's answer:
It was created to solve the problem of messy WhatsApp exports by turning them into a simple, readable, and private chat experience.
ChatParser's answer:
React, TypeScript, IndexedDB, JSZip, and virtual scrolling.
Share your experience with using Fathom and ChatParser. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


The finance director of a 12-entity hospitality group had been using Fathom for two years. Her team loved the dashboards. When the group acquired three companies in New Zealand, she expected Fathom to handle the...
Fathom is an AI-powered notetaker designed to record, transcribe, and summarize meetings. It integrates with popular video conferencing platforms like Zoom, Google Meet, and Microsoft Teams. Fathom aims to enhance...
Fathom uses a lightweight script that is faster, quicker, and better; it never slows down. No matter how many visitors you get, your website and fathom dashboard will never get slow, which is best for your website’s...
We have no reviews of ChatParser yet. Be the first one to post
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