Software Alternatives, Accelerators & Startups

ColoringBook.AI VS ForthWrite

Compare ColoringBook.AI VS ForthWrite and see what are their differences

ColoringBook.AI logo ColoringBook.AI

Create and download free printable coloring pages with our AI coloring pages generator. Transform your text and images into unique coloring pages in PDF and PNG formats.

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.
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  • ColoringBook.AI coloringbook.ai homepage
    coloringbook.ai homepage //
    2024-11-27
  • 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.

ColoringBook.AI

$ Details
freemium $6.99 / Monthly (100 credits)
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

ColoringBook.AI features and specs

  • Creative Engagement
    ColoringBook.AI offers interactive coloring tools that engage users creatively by allowing them to generate and customize coloring pages using AI.
  • User-Friendly Interface
    The platform features an intuitive and easy-to-navigate interface that makes it accessible for both children and adults.
  • Variety of Content
    It provides a wide range of themes and templates, catering to diverse interests and facilitating personalized user experiences.
  • Educational Value
    ColoringBook.AI can be used as a tool for learning and development, helping users improve their color recognition and artistic skills.
  • Accessibility
    Being an online tool, it is accessible from multiple devices, allowing users to create and color anywhere with an internet connection.

Possible disadvantages of ColoringBook.AI

  • Subscription Model
    While it may offer free features, accessing the full range of tools and content could require a paid subscription, which may not be ideal for all users.
  • Limited Offline Access
    The primary functionality relies on internet connectivity, which could limit usability in areas with poor or no internet access.
  • Digital Interface Constraints
    Some users might prefer traditional coloring methods with physical coloring books, and may find the digital interface less satisfying.
  • AI Limitations
    AI-generated content might not always meet user expectations in terms of creativity or complexity, depending on user preference.
  • Screen Time Concerns
    Prolonged use of digital devices for coloring could contribute to increased screen time, which is a concern for some parents and guardians.

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

ColoringBook.AI videos

Coloringbook.ai REVIEW #coloringbook #coloringbookai

More videos:

  • Review - Testing a coloring app for iPad: ColoringBook.ai review
  • Review - Coloringbook.ai Reviews - The Best AI Coloring Book for Children and Artists #coloringpages

ForthWrite videos

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

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Category Popularity

0-100% (relative to ColoringBook.AI and ForthWrite)
Coloring
100 100%
0% 0
Writing Tools
0 0%
100% 100
Kids Education
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing ColoringBook.AI 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

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Reviews

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

ColoringBook.AI Reviews

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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)

What are some alternatives?

When comparing ColoringBook.AI and ForthWrite, you can also consider the following products

ColorBliss.art - Custom AI generated coloring sheets for kids and adults

Superhuman - Superhuman is an email management tool.

Coloring Pages - Coloring pages for kids and adults, play free coloring pages for kids and adults. We provide coloring pages, coloring books, coloring games, paintings, coloring pages instructions at here. Have fun!

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.

Free Coloring Pages for Kids - Coloring Pages Yocoloring

Lavender - Realtime coaching for sales emails.