Software Alternatives, Accelerators & Startups

Google Duo VS ForthWrite

Compare Google Duo VS ForthWrite and see what are their differences

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.

Google Duo logo Google Duo

Google's answer to Facetime, high-quality video calling on iOS and Android.

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.
  • Google Duo Landing page
    Landing page //
    2022-10-18
  • 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.

Google Duo

Pricing URL
-
$ Details
-
Platforms
-
Release Date
2016 August

ForthWrite

$ Details
freemium $12 / 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

Google Duo features and specs

  • High-Quality Video
    Google Duo offers high-definition video calls, ensuring clear visuals even on slower internet connections.
  • Cross-Platform Support
    The app is available on both Android and iOS devices, allowing users to communicate seamlessly across different platforms.
  • End-to-End Encryption
    Duo provides secure, end-to-end encrypted calls, ensuring privacy and security for all communications.
  • User-Friendly Interface
    Features a simple and intuitive interface that makes it easy to use for people of all ages.
  • Knock Knock Feature
    Allows users to see a live video preview of the caller before answering, adding a personal touch to incoming calls.

Possible disadvantages of Google Duo

  • Limited Group Call Capacity
    Group calls are limited to a smaller number of participants compared to some other video conferencing apps.
  • SMS Integration
    Lacks deeper integration with SMS messaging, which can be a disadvantage for users who prefer a unified communication platform.
  • Desktop Support
    While the web version is available, it doesn't provide the full feature set that mobile versions offer.
  • Reliance on Phone Numbers
    Google Duo requires a phone number for account setup, which might be seen as an inconvenience for users who prefer email-based accounts.

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

Analysis of ForthWrite

Overall verdict

  • I don't have verified information about a product called ForthWrite (forthwrite.ai). I cannot confirm its features, quality, or reputation, so I'm unable to provide an accurate assessment of whether it's good.

Why this product is good

  • No reliable data available on this specific product in my knowledge base
  • This may be a newer product, a niche tool, or possibly a fictional/hypothetical name
  • Providing details without verified information could result in inaccurate or fabricated claims

Recommended for

  • Unable to determine without verified product information
  • Consider checking the official website, user reviews on platforms like G2 or Trustpilot, and independent tech review sites for accurate details

Google Duo videos

Make a video call with Google Duo | Pixel

More videos:

  • Review - Google Duo Review
  • Review - Google Duo, Group Video Calls for Android & iPhone
  • Review - How does Google Duo compare to Skype and Facetime?

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Google Duo and ForthWrite)
Online Services
100 100%
0% 0
Email
0 0%
100% 100
Social & Communications
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Google Duo 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 Google Duo 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 Google Duo and ForthWrite

Google Duo Reviews

FaceTime isn't on Android: here are three alternatives you can use
Google Duo is a relatively recent attempt from Google to make Androidโ€™s version of FaceTime, and while it seemingly hasnโ€™t managed that in terms of popularity, the quality is certainly there.
9 best FaceTime alternatives for Android phones
Google Duo works on both Android and iOS devices, allowing you to call your friends and family, regardless of what kind of smartphone theyโ€™re using. You either can place one-on-one calls or group voice and video chats with up to eight people, and Duo gives you option to leave video messages. Duo has a nice โ€œKnock Knockโ€ feature that lets you see who is calling with a live...
Best FaceTime alternatives for video calls
Google Duo probably isn't the best app for group video chats. The app could add conference calling capabilities soon, however. Users may still want to operate with Skype for now.
Source: www.cnet.com

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, Google Duo seems to be more popular. It has been mentiond 3 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.

Google Duo mentions (3)

  • Google Duo merger with Meet starts rolling out
    We are frequent users of the Duo For Web interface. We particularly like the quick way we can create a small group. Arranging a quick group meeting using Meet is more cumbersome as you have to send invites via email instead of just ringing/calling the group participants all at once. Source: about 4 years ago
  • Google Duo and Google voice
    I've never tried this, but I think the is an option to use duo through a web browser, by logging into your google account. Take a look at: https://duo.google.com/about/. Source: over 4 years ago
  • How to make calls via computer?
    Alternatively, you can ignore all that and use Duo on the web. Enroll in Duo on your Fi phone, then https://duo.google.com/about/ and login to Fi account. Click on a contact then select Voice call. Source: over 5 years ago

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 Google Duo and ForthWrite, you can also consider the following products

TeamLink - TeamLink is one of the leading and sumptuous solutions that is making web and video meetings extremely easy and efficient.

ReclaimAI - Helps users prioritize their work and personal calendars

Around - Find people to hang out with.

Superhuman - Superhuman is an email management tool.

GoRemote - A free & simple yet powerful European based solution to go remote. Video & audio conferences, screen sharing & chat with end to end encryption. Keep your team close and productive

Shortwave - Email smarter & faster with a reinvented experience for your Gmail