Software Alternatives, Accelerators & Startups

WhatsApp VS ForthWrite

Compare WhatsApp VS ForthWrite and see what are their differences

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WhatsApp logo WhatsApp

WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.

ForthWrite logo ForthWrite

Email that sounds like you, and gets measurably more like you every week. Drafts in Gmail, Outlook, and the browser. Free to start.
Visit Website
  • WhatsApp Landing page
    Landing page //
    2023-04-18
  • ForthWrite Landing Page
    Landing Page //
    2026-06-19
  • ForthWrite Dashboard
    Dashboard //
    2026-06-19
  • ForthWrite In Gmail
    In Gmail //
    2026-06-19
  • ForthWrite Pricing
    Pricing //
    2026-06-19

ForthWrite is an AI email writing assistant for Gmail and Outlook that learns your writing style from your real sent mail. The more you use it, the more it sounds like you. Get smart drafts in seconds, auto-draft replies before you open your inbox, and maintain your personal voice at scale. Free to start, no credit card required. Works inside Gmail and Outlook on the web.

How it works

ForthWrite captures your tone, sentence rhythm, and sign-offs from your actual sent emails, then uses that profile to generate drafts that match how you write, not a generic AI voice. Every draft you edit or send improves the model over time.

Key features

  • Auto-draft: replies waiting in Gmail before you open your inbox
  • Voice matching from your real sent mail, not templates
  • Recipient-aware drafts that adapt to who you are emailing
  • Prompt Lab for version-controlling and A/B testing your persona prompt
  • BYOK support: bring your own API key for Claude, OpenAI, Grok, Mistral, and more
  • Works in Gmail and Outlook on the web, plus a standalone browser widget
  • Training data export and full data portability

Who uses it

Professionals who send high volumes of relationship-critical email: lawyers, financial advisors, recruiters, account executives, founders, and anyone who wants their inbox handled without sounding like a chatbot wrote it.

Pricing

Free tier includes 10 drafts per week with no credit card required. Paid plans start at $12/month and include unlimited drafts, custom persona prompts, and auto-draft.

WhatsApp

Pricing URL
-
$ Details
free
Platforms
Mobile Desktop
Release Date
2009 January
Startup details
Country
United States
State
California
Founder(s)
Brian Acton
Employees
1,000 - 1,999

ForthWrite

$ Details
freemium $12.0 / Monthly (Standard plan)
Platforms
Web
Release Date
2026 June
Startup details
Country
United States
State
California
City
San Diego
Founder(s)
Curtis Boortz
Employees
1 - 9

WhatsApp features and specs

  • End-to-End Encryption
    WhatsApp provides end-to-end encryption for all messages and calls, ensuring that only you and the person you're communicating with can read or listen to them.
  • Cross-Platform Availability
    WhatsApp is available on various platforms including iOS, Android, and Windows, allowing users to stay connected regardless of the device they are using.
  • Cost-Effective
    The app is free to download and use, with no subscription fees, making it a cost-effective solution for messaging and calls.
  • Wide Adoption
    With over 2 billion users, WhatsApp has a large user base, making it likely that your contacts are already using the app.
  • Multimedia Sharing
    Users can easily share photos, videos, documents, and location, enhancing the communication experience.
  • Voice and Video Calls
    WhatsApp supports high-quality voice and video calls, allowing users to communicate in various modes.
  • Group Chats
    The app supports group chats, enabling users to communicate with multiple people at once.

Possible disadvantages of WhatsApp

  • Privacy Concerns
    While WhatsApp offers end-to-end encryption, its ownership by Facebook has raised concerns over data privacy and usage.
  • Data Usage
    High data consumption during voice and video calls can be a concern, especially for users without an unlimited data plan.
  • Storage Space
    Multimedia and chat backups can consume significant storage space on devices, leading to potential issues with device performance.
  • Spam and Scams
    Users sometimes receive spam messages or become targets of scams, which can be a nuisance and a security risk.
  • Limited File Size
    The app has limitations on the size of files that can be shared, which might not be convenient for all users.
  • Dependency on Phone Number
    Users are required to have a phone number to register, which can be a barrier for some individuals.
  • Availability in Certain Countries
    WhatsApp is banned or restricted in some countries, limiting its accessibility for users in those regions.

ForthWrite features and specs

  • Voice Matching
    Learns from your real sent mail, not templates
  • Auto-draft replies
    Replies waiting in Gmail before you open your inbox
  • Batch-drafting
    Draft replies for your entire inbox with one click
  • Works in browser
    Gmail, Outlook, and web browsers
  • BYOK support
    Claude, OpenAI, Grok, Mistral, and more
  • Prompt Lab
    Version control and A/B test your persona prompt
  • Free tier
    10 drafts per week, no credit card required

WhatsApp videos

How to Use Whatsapp - 2020 Beginner's Guide

More videos:

  • Tutorial - WhatsApp Web - Full Review & Tutorial
  • Review - What is WhatsApp? A Review
  • Review - Whatsapp Web | Everything You Need To Know!
  • Review - What is WhatsApp & How Does it Work? | WhatsApp Guide Part 1

ForthWrite videos

No ForthWrite videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to WhatsApp and ForthWrite)
Communication
100 100%
0% 0
Writing Tools
0 0%
100% 100
Messaging
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing WhatsApp and ForthWrite.

Which are the primary technologies used for building your product?

ForthWrite's answer:

Next.js, React, Supabase, Anthropic Claude, OpenAI, Stripe, Vercel, Chrome Extensions API

What makes your product unique?

ForthWrite's answer:

ForthWrite learns your writing style from your actual sent mail, not a generic prompt. Every draft sounds like you wrote it because it was trained on how you actually write. It also auto-drafts replies before you open your inbox, so your email is partially handled before your day starts.

Why should a person choose your product over its competitors?

ForthWrite's answer:

Most AI email tools give you a blank box and a "write for me" button. ForthWrite builds a voice profile from your sent history and gets more accurate with every draft you edit or send. Unlike ChatGPT or Gemini, it works natively inside Gmail and Outlook with no copy-paste. Unlike Lavender, it writes the draft, not just scores it.

How would you describe the primary audience of your product?

ForthWrite's answer:

Professionals who send high volumes of relationship-critical email and cannot afford to sound generic: lawyers, financial advisors, recruiters, account executives, consultants, and founders managing their own inbox.

What's the story behind your product?

ForthWrite's answer:

Built out of frustration with AI writing tools that produce text that sounds nothing like the person sending it, and as a way to handle large amounts of daily email. The core insight was that your sent mail is the best training data you already have, and no tool was using it.

User comments

Share your experience with using WhatsApp and ForthWrite. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare WhatsApp and ForthWrite

WhatsApp Reviews

  1. Dhruv choudhary
    BEST APP FOR PRIVATE CHATTING

    I AM USING WHATSAPP SINCE 2015 AND STILL CURRENTLY USING IT HELPS ME TO GET IN TOUCH WITH MY FRIEND AND RELATIVES AND NOW IT ALSO HELPS ME TO DO PAYMENT VIA WHATSAPP.

    ๐Ÿ Competitors: Skype
    ๐Ÿ‘ Pros:    Free to use|Easy to use
    ๐Ÿ‘Ž Cons:    Nothing, so far

20 Telegram Alternatives to Chat With in 2024
WhatsAppโ€™s other claim to fame is its security features, with end-to-end encryption. These security features, although not perfect, are still considered much better than Telegramโ€™s. WhatsApp does a good job replicating Telegramโ€™s chat features, but isnโ€™t the best replacement for building groups of people who donโ€™t know each other or for live streaming.
10 Best Secure Messaging Apps to Keep Your Conversation Private
WhatsApp is another highly popular messaging app that has brought end-to-end encryption to the masses. And the best part is that the encryption is enabled by default and extends to all forms of communication on WhatsApp, be it messages, audio or video calls, and WhatsApp Web. It uses the encryption protocol developed by Open Whisper Systems โ€” the company behind Signal...
Source: beebom.com
10 Best Telegram Alternatives in 2024
Whatsapp is a very famous app similar to Telegram and it is widely used for communication across the world, some of the widely used features also includes group messaging, private or group calls, all can be done through end-end encryption. Apart from these features people also put a status of about 24 hours.
Top 10 Apps like Telegram for Android and IOs [2023]
WhatsApp's recently announced 'community' feature successfully engaged existing users and onboarded numerous communities. WhatsApp has a distinct platform wherein business users can easily interact. It supports up to 2 billion people using it worldwide, allowing you to engage audiences, accelerate sales, and improve customer service outcomes. Furthermore, it enabled...
The best WhatsApp alternatives for 2023
However recent developments have started hammering home WhatsApp's relationship to parent company Facebook. The same Facebook that's almost constantly in the news for some major controversy or another. The controversy over the WhatsApp privacy policy, which many understood to mean WhatsApp would start sharing more information with Facebook โ€” with rumors that the contents of...

ForthWrite Reviews

  1. curtisboortz
    ยท Founder at ForthWrite ยท
    I built ForthWrite to fix generic AI email, and I still use it every day

    I built ForthWrite because I kept sending emails that sounded like they came from the same generic AI as everyone else. After launching it, I still use it for my own inbox every day, which is about the most honest endorsement I can give.

    The Chrome extension lives inside Gmail and Outlook on the web. Open a thread, hit Alt+Shift+D, and a draft comes back in your voice, not a template. The free tier is real: 10 drafts per week, no API key, no credit card. Voice matching is included on free, because that is the point.

    What keeps it useful compared to Gemini or a chat tab: it learns from what you actually send. Every edit you make before hitting send becomes a signal. Over time the drafts drift closer to how you really write, and the dashboard shows the improvement curve so you can see it happening.

    The web compose surface lets you draft from forthwrite.ai without installing anything, useful for people who want to try before committing to the extension.

    Standard adds recipient-aware and intent-aware drafting plus AI coaching. Pro adds auto-draft (replies waiting when you open Gmail), batch replies, and Prompt Lab for version-controlling your prompts. Teams adds a shared persona and seat-level analytics.

    ForthWrite is not for everyone. If you just need quick replies and tone does not matter, Gemini is free and already in your inbox. ForthWrite is for people where tone does matter: client communication, relationship-driven threads, external correspondence where sounding off costs something real.

    Disclosure: I am the founder and use it daily. Happy to answer questions in the comments.

    ๐Ÿ Competitors: Jace.ai, Fyxer, Mailmeteor
    ๐Ÿ‘ Pros:    Drafts land inside gmail and outlook; no copy-pasting from a chat window|Voice matching is on the free tier, not paywalled behind paid plans|No api key, no credit card to start; free tier runs on a server-side proxy|Learns from every edit you make before sending; drafts improve over time|Full keyboard flow: alt+shift+d to draft in any thread, no mouse required|Byok on paid plans, 9 providers supported, keys encrypted at rest|Web compose at forthwrite.ai works without installing the extension at all
    ๐Ÿ‘Ž Cons:    10 free drafts/week is enough to evaluate, not enough for a heavy inbox|Auto-draft, batch replies, and prompt lab all require the pro tier|Early-stage product; fewer third-party integrations than mature inbox tools|No mobile app: the extension and add-in are desktop-only (chrome on web, or the outlook desktop add-in)

Social recommendations and mentions

Based on our record, WhatsApp seems to be more popular. It has been mentiond 24 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

WhatsApp mentions (24)

  • User-facing/client-side tools for internet troubleshooting
    Hi everyone. The other day a client of mine's employees started having issues with the "internet not working". After some detective work with traceroute and interviewing them about what sites they were having issues with, I determined that the actual issue was with the web.whatsapp.com service having downtime. I'm mentioning all this because I'm now thinking of making them a small video/article on our intranet... Source: over 2 years ago
  • Is WhatsApp Web down in Oman?
    I believe web.whatsapp.com is being blocked by local telecom companies in order to protect their duopoly and keep Oman in tech--stone-age. If fewer people know how else the rest of the world uses the internet, then they don't have to make an effort to improve their offerings. Omantel is definitely blocking this web.whatsapp.com. Source: over 2 years ago
  • Open Letter to WhatsApp: Need for a Linux Desktop App
    What's wrong with https://web.whatsapp.com/ ? Source: over 2 years ago
  • Best app, like, ever?
    Whatsapp (Free) - chat. Although some people prefer iMessage and other ones. Source: over 2 years ago
  • WhatsApp Mac Client - can I have it installed two times?
    Use browser for one account https://web.whatsapp.com/ and app for the other. Source: over 2 years ago
View more

ForthWrite mentions (0)

We have not tracked any mentions of ForthWrite yet. Tracking of ForthWrite recommendations started around Jun 2026.

What are some alternatives?

When comparing WhatsApp and ForthWrite, you can also consider the following products

Telegram - Telegram is a messaging app with a focus on speed and security. Itโ€™s superfast, simple and free.

Superhuman - Superhuman is an email management tool.

Skype - Stay in touch with your family and friends for free on Skype. Download Skype today to chat and call on desktop and mobile.

Gemini - Gemini, formerly known as Bard, is a generative artificial intelligence chatbot developed by Google. Based on the large language model (LLM) of the same name, it was launched in 2023 in response to the rise of OpenAI's ChatGPT.

Signal - Fast, simple & secure messaging. Privacy that fits in your pocket.

Lavender - Realtime coaching for sales emails.