Software Alternatives, Accelerators & Startups

iA Writer VS ForthWrite

Compare iA Writer VS ForthWrite and see what are their differences

iA Writer logo iA Writer

Minimal Design, Maximum Focus

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
  • iA Writer Landing page
    Landing page //
    2023-07-27
  • 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.

iA Writer

Website
ia.net
$ Details
paid Free Trial $29.99 / One-off
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

iA Writer features and specs

  • Focus Mode
    iA Writer includes a Focus Mode that dims everything except the current sentence or paragraph, helping writers concentrate on their work without distractions.
  • Minimalistic Interface
    The application features a minimalistic design, providing a clean and clutter-free environment that emphasizes content creation over unnecessary features.
  • Markdown Support
    iA Writer supports Markdown formatting, allowing users to easily format text without taking their hands off the keyboard, enhancing writing efficiency.
  • File Export Options
    It offers various export options including Word, PDF, and HTML, making it easy to share documents in different formats.
  • Syntax Highlight
    The app includes syntax highlighting functionality that visually differentiates different parts of speech to enhance understanding of sentence structure.
  • Cross-Platform Compatibility
    iA Writer is available on multiple platforms, including macOS, iOS, Windows, and Android, ensuring a consistent writing experience across devices.
  • Document Library
    It features a built-in document library for easy organization and quick access to all your writing projects.

Possible disadvantages of iA Writer

  • Limited Collaboration Features
    Unlike other writing tools, iA Writer lacks advanced collaboration features, making it less suitable for team projects that require real-time editing.
  • Basic Customization
    The application provides limited customization options for the writing environment, which might not appeal to users who prefer a highly personalized interface.
  • Learning Curve for Markdown
    New users unfamiliar with Markdown may experience a learning curve, which can slow down the initial writing process until they become accustomed to the syntax.
  • Price
    iA Writer is a premium product, and the cost may be a barrier for some users, especially when there are free alternatives available.
  • Limited Advanced Features
    The focus on minimalism means that some advanced features found in other writing applications, like extensive template libraries or robust project management tools, are lacking.
  • Occasional Sync Issues
    Some users have reported occasional synchronization issues between devices, which can disrupt the writing workflow.

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 iA Writer

Overall verdict

  • iA Writer is an excellent choice for those seeking a focused and efficient writing tool. Its simplicity does not detract from its effectiveness, offering just the right amount of features for streamlined writing and editing. With high praise from individuals who prioritize clean and distraction-free text processing, it's widely considered a top-tier writing application.

Why this product is good

  • iA Writer is highly regarded for its minimalist design and distraction-free writing environment. It offers features like Focus Mode, which helps writers concentrate on a specific section, and Markdown support for seamless formatting. It also provides robust cross-platform support, making it easy to sync documents across devices. The clean interface and intuitive layout make it a favorite among writers who prefer simplicity and functionality over cluttered interfaces with excessive features.

Recommended for

  • Writers who enjoy minimalist and focused writing environments
  • Users looking for seamless cross-platform document synchronization
  • Individuals who prefer Markdown integration for formatting
  • People who want a distraction-free interface to boost productivity

iA Writer videos

SCOM0863 - iA Writer - Preview

More videos:

  • Review - What's The Apps: iA Writer

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to iA Writer and ForthWrite)
Markdown Editor
100 100%
0% 0
Writing Tools
96 96%
4% 4
Text Editors
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing iA Writer 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 iA Writer 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 iA Writer and ForthWrite

iA Writer Reviews

7 minimalist alternatives to CherryTree
Get focused. iA Writer offers a unique writing experience that lets you concentrate and clarify your message. Used by half a million people worldwide, its powerful interface is crafted to cut out noise, let you focus on what you want to say, and help you structure and trim your text. Available for Mac, iOS, Windows, and Android.
Source: papereditor.app
11 Best Scrivener Alternatives
The interface is easy to use, minimalistic, and helps you keep your writing goals on track. If youโ€™re not technically sound and want a simple tool without any distracting features based on your own skills, you can go with iA Writer over Scrivener.

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, iA Writer seems to be more popular. It has been mentiond 7 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.

iA Writer mentions (7)

  • Your job is to deliver code you have proven to work
    "Slow the f!ck down." - Oliver Reichenstein [1] This only happens because the software industry has fallen into the Religion of Speed. I see it constantly: justified corner-cutting, rushing shit out the door, and always loading up another feature/project/whatever with absolutely zero* self-awareness. AI is just an amplifier for bad behavior that was already causing chaos. What's not being said here but... - Source: Hacker News / 7 months ago
  • Bear alternatives on PC
    You might check out iA Writer. https://ia.net/ If I didn't have a Mac with access to Bear, that's probably what I'd be using. Source: about 3 years ago
  • I didn't realize the community has grown so much..
    Obsidian ai (a forked version of this theme is my main, I haven't released it publicly because the ui is a clone of my favourite app iaWriter https://ia.net/, and I don't think that's ethically right to share). Source: over 3 years ago
  • Tools for structuring research notes and productivity/creativity
    Ia.net: looks good to build a personal wiki with hyperlinks (which is something I def want) but I fear this can get messy after a while and can loose overview easily. Source: almost 4 years ago
  • How to find and remove all finished tasks [x] at once in a single txt document?
    Thanks, it works! Could you share a link to learn more about patterns and how to use them. Unfortunately I couldn't find any info on ia.net. Source: about 4 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 iA Writer and ForthWrite, you can also consider the following products

Typora - A minimal Markdown reading & writing app.

Superhuman - Superhuman is an email management tool.

Scrivener - Scrivener is a content-generation tool for composing and structuring documents.

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.

FocusWriter - FocusWriter is a fullscreen, distraction-free word processor designed to immerse you as much as...

Lavender - Realtime coaching for sales emails.