Software Alternatives, Accelerators & Startups

Sketch VS ForthWrite

Compare Sketch VS ForthWrite and see what are their differences

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Sketch logo Sketch

Professional digital design for Mac.

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
  • Sketch Landing page
    Landing page //
    2023-10-20
  • 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.

Sketch

Website
sketch.com
$ Details
-
Platforms
-
Release Date
2010 January
Startup details
Country
The Netherlands
State
Zuid-Holland
City
The Hague
Founder(s)
Emanuel Sรก
Employees
10 - 19

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

Sketch features and specs

  • User Interface
    Sketch has a clean and intuitive user interface that is easy to navigate, which makes it accessible for both beginners and advanced users.
  • Design Tools
    Provides robust vector editing tools and a wide range of design features, making it versatile for various kinds of digital design work.
  • Plugins Ecosystem
    Offers a rich ecosystem of plugins that enhance functionality and can be customized to fit specific needs.
  • Community and Resources
    There is a strong community of designers using Sketch, which means plenty of tutorials, resources, and shared assets are available.
  • Symbol and Reuse
    Supports symbols and reusable design components, making it efficient for maintaining consistency across a design project.
  • Performance
    Generally performs well even with complex design files, as it is optimized for the Mac environment.

Possible disadvantages of Sketch

  • Mac-only
    Sketch is available only on macOS, limiting its accessibility to users on other platforms such as Windows or Linux.
  • Learning Curve
    While the interface is intuitive, mastering Sketch's full suite of tools and features can still take some time.
  • Pricing
    Sketch requires a subscription or one-time payment, which can be a consideration for freelancers or small teams with limited budgets.
  • Collaboration
    Real-time collaboration features are not as advanced as some of its competitors, which can pose challenges for team-based projects.
  • Compatibility
    Because it uses its own file format, working cross-platform or with non-Sketch users can present challenges, requiring conversion tools or additional steps.
  • Limited Prototyping
    While it offers some prototyping functionality, it is not as robust as tools specifically designed for prototyping such as InVision or Figma.

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 Sketch

Overall verdict

  • Sketch is highly regarded in the design community, particularly for those working on digital interfaces. While it may not have as broad a range of features as some of its competitors, its specialization in UI and UX design makes it an industry-standard tool for many professionals.

Why this product is good

  • Sketch is a vector graphics editor primarily used for user interface and user experience design. It is appreciated for its intuitive design, powerful features tailored for UI/UX designers, and a vibrant community with an extensive library of plugins and integrations. The software is known for its ease of use, real-time collaboration capabilities, and efficient prototyping tools, making it a go-to tool for many designers.

Recommended for

    Sketch is recommended for UI/UX designers, product designers, and digital artists who focus on app and web design. It is particularly suitable for teams that require real-time collaboration and those who benefit from using a tool with a vast ecosystem of plugins that can extend its functionality.

Sketch videos

Sketch Review | Vikram | Tamil Talkies

More videos:

  • Review - Sketch vs. Photoshop: The 5 Things Sketch Can Do That Photoshop Canโ€™t
  • Review - sketch review by prashanth

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Sketch and ForthWrite)
Design Tools
100 100%
0% 0
Writing Tools
0 0%
100% 100
Graphic Design Software
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Sketch 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 Sketch 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 Sketch and ForthWrite

Sketch Reviews

Top 6 Figma Alternatives: Prototyping and UI/UX Tools
Sketch offers 2 premium plans, Standard and Business, which start at $9 and $20 per month per editor, respectively, and include a 30-day free trial. The software is exclusively accessible for macOS, and there is no free tier, although students and educators can obtain it for free through the Sketch for Education initiative.
Source: fronty.com
10 Best Figma Alternatives in 2024
Sketch is another best Figmawith alternative and it is a professional digital design tool used for creating user interfaces and user experience designs. It is popular among designers for its simple interface, powerful features, and focus on vector-based design.
Top 10 Figma Alternatives for Your Design Needs | ClickUp
Sketch started out as a vector editing platform, and it still boasts options like shorthand math operators and effortless editing for multiple borders, making the design process easier.
Source: clickup.com
9 Best InVision Alternatives to Switch to in 2024
Available as a native Mac app, using design tools on Sketch is only available to iOS users. However, non-iOS fans can browse, inspect, and collaborate on designs using the web app.
Source: designmodo.com
Figma Alternatives: 12 Prototyping and Design Tools in 2024
Sketch is a popular design tool used by many freelancers due to its wide range of tools at your disposal. You can create artboards, animated interactions, and prototypes and preview them through the Sketch app on desktop and iOS devices.

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, Sketch 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.

Sketch mentions (3)

  • How to make a Portfolio!?
    Start by building the PDF version, as that's easier. I use Sketch (sketch.com) for designing layout. Source: over 3 years ago
  • TurboPad Vector Illustration
    This TG-16 controller was originally drawn in Fireworks CS4 waaaaaay back in the day, but I re-drew it by hand using simple shapes and effects in Sketch and Figma. Source: almost 4 years ago
  • Starting off as a UI/UX Designer.
    Every designer has to choose their preferred design tool where they can implement their prototypes.Try Figma, Sketchand Adobe XD. These are the main tools, try each and find your favorite, as for me I love Figma(Very good in collaboration). - Source: dev.to / 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 Sketch and ForthWrite, you can also consider the following products

Figma - Team-based interface design, Figma lets you collaborate on designs in real time.

Superhuman - Superhuman is an email management tool.

Adobe Illustrator - Adobe Illustrator is a vector graphics editor.

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.

Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.

Lavender - Realtime coaching for sales emails.