Software Alternatives, Accelerators & Startups

Bubbles VS ForthWrite

Compare Bubbles 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.

Bubbles logo Bubbles

Drop comment bubbles anywhere on the screen, on any website.

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
  • Bubbles Landing page
    Landing page //
    2023-10-22
  • 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.

Bubbles

Pricing URL
-
$ Details
-
Platforms
-
Release Date
-

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

Bubbles features and specs

  • Asynchronous Collaboration
    Bubbles allows team members to share feedback and updates without needing to be online at the same time, enhancing productivity across different time zones.
  • Multimedia Support
    Users can leave comments with text, video, and screen recordings, providing a richer communication experience compared to text-only platforms.
  • Ease of Use
    The platform is designed to be user-friendly, allowing even non-technical users to navigate and use it effectively.
  • Focused Feedback
    Bubbles enables pinpointed remarks on specific parts of a project, making feedback more precise and actionable.
  • Integration Capabilities
    It integrates with major productivity tools like Slack and Trello, which helps in keeping the workflows streamlined.

Possible disadvantages of Bubbles

  • Notification Overload
    Users might get overwhelmed by the frequency of notifications if not managed properly.
  • Learning Curve
    Despite its user-friendly interface, initial setup and training might still be required to fully exploit its features.
  • Dependency on Internet
    The platform requires stable internet connectivity for effective use, which could be a limiting factor in regions with poor internet infrastructure.
  • Privacy Concerns
    As with any online collaboration tool, there could be concerns regarding data security and privacy, especially when dealing with sensitive information.
  • Limited Customizability
    The tool might not offer extensive customization options to fit very specific requirements of some users or organizations.

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 Bubbles

Overall verdict

  • Bubbles is a valuable tool for those seeking an innovative way to give and receive feedback on web projects. Its ease of use and integration capabilities make it a strong option for many teams.

Why this product is good

  • Bubbles (usebubbles.com) is appreciated for its ability to simplify feedback and collaboration by allowing users to leave video and audio comments directly on web pages. This unique feature is particularly useful for teams working remotely as it can save time and make communication more efficient. Additionally, it integrates smoothly with various project management tools, enhancing its utility in collaborative settings.

Recommended for

  • Remote teams looking to improve collaboration
  • Project managers needing streamlined feedback methods
  • Web developers and designers who require client input
  • Organizations aiming to enhance their internal communication

Bubbles videos

Cidergeist Bubbles Review!

More videos:

  • Review - DIY Homemade Giant Bubbles for Kids Kit with Ryan ToysReview!!!

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Bubbles and ForthWrite)
Screen Recording
100 100%
0% 0
Writing Tools
0 0%
100% 100
Productivity
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Bubbles 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 Bubbles 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 Bubbles and ForthWrite

Bubbles Reviews

Python & ETL 2020: A List and Comparison of the Top Python ETL Tools
Bubbles is another Python framework that you can use to run ETL. Unlike some other ETL frameworks, Bubbles uses metadata to describe pipelines as opposed to script-based. While Bubbles is written for Python, the author claims that it's not meant to be Python-exclusive in nature. A driving theme of Bubbles is that it's technologically agnostic, so you don't have to worry...
Source: www.xplenty.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, Bubbles seems to be more popular. It has been mentiond 1 time 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.

Bubbles mentions (1)

  • Ask HN: Who is hiring? (November 2021)
    Bubbles | Remote (US timezones) | Senior Full-stack Engineer | Full-time | https://usebubbles.com Bubbles is enabling the world to work asynchronously by building the next generation communication platform. Rather than being stuck in Zoom all day and having to work around other people's schedules, Bubbles enables you to work on your own time and at your own pace while still having the context you need to discuss... - Source: Hacker News / over 4 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 Bubbles and ForthWrite, you can also consider the following products

Loom - Loom is a screen recording extension for Chrome that gives people the ability to create and share media. Create your own videos using your camera, screen view, and audio. Read more about Loom.

Superhuman - Superhuman is an email management tool.

Tella - Capture your best work with video. Record in the browser, share instantly.

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.

ScreenStudio - Streaming, made easy!

Lavender - Realtime coaching for sales emails.