Software Alternatives, Accelerators & Startups

Spinner Chief VS ForthWrite

Compare Spinner Chief VS ForthWrite and see what are their differences

Spinner Chief logo Spinner Chief

Best Article Spinner

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
  • Spinner Chief Landing page
    Landing page //
    2023-10-17
  • 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.

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

Spinner Chief features and specs

  • Cost-Effective
    Spinner Chief offers a competitive pricing model with a range of plans, making it accessible for users with different budgets.
  • Multilingual Support
    The tool supports content spinning in multiple languages, which is beneficial for international users or those targeting diverse markets.
  • Cloud Thesaurus
    Spinner Chief includes a cloud-based thesaurus that continually updates based on user inputs, helping to improve the quality of synonyms and spun content.
  • Batch Spinning
    It allows users to spin multiple articles in batches, saving time for those needing to generate large volumes of content.
  • API Integration
    Provides API access for seamless integration with other platforms, enabling automation and expanding its utility.

Possible disadvantages of Spinner Chief

  • Quality Concerns
    Despite improvements, the quality of spun content can sometimes be low, requiring additional manual editing to ensure readability and coherence.
  • Complexity
    The software's numerous features and settings might be overwhelming for beginners, leading to a steep learning curve.
  • Occasional Bugs
    Users have reported occasional bugs and software glitches, which can disrupt the spinning process.
  • Internet Dependency
    Some features of the tool require a stable internet connection, which might be a drawback for users with limited connectivity.
  • Natural Language Limitation
    Despite its advanced algorithms, the tool may struggle with producing naturally fluent language, especially in complex sentence structures.

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

Spinner Chief videos

Spinner Chief 6 of Year 2020 : The Best Article Rewriter Review- How To Spin To 100% Unique Article

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 Spinner Chief and ForthWrite)
Tool
100 100%
0% 0
Writing Tools
86 86%
14% 14
Email
0 0%
100% 100
Online Services
100 100%
0% 0

Questions & Answers

As answered by people managing Spinner Chief 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 Spinner Chief and ForthWrite

Spinner Chief Reviews

11 Best Speedwrite Alternatives (Free Included) 2022
If you do decide to use Spinner Chief, I recommend getting a premium license. You will enjoy a more updated version of Spinner Chief, and the results you will get will be much better.
15 Best QuillBot Alternatives 2021
While QuillBot is an online paraphrase tool, Spinner Chief has both a downloadable, desktop version and an online version. Not many spinners have both versions (most only have an online version), which makes Spinner Chief a good choice for those who donโ€™t prefer to work in the cloud.
7 Best QuillBot Alternatives & Similar Tools [Free & Paid]
Spinner Chief 6 is yet another QuillBot alternatives that has been around for a while now. As of now, the team is offering the 6th, much-improved version of the software. You can estimate the efficiency by knowing that Spinner Chief 6 is not only capable of paraphrasing your content but also rewrites or spin them in a human-readable quality.

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, Spinner Chief 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.

Spinner Chief mentions (1)

  • Welcome to SpinnerChief๏ผ
    If you want to own a desktop one and have a try free of charge, please visit our website. Source: 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 Spinner Chief and ForthWrite, you can also consider the following products

WordAi - WordAi uses artificial intelligence to understand text and is able to automatically rewrite your article with the same readability as a human writer! Sign up now and get unlimited human quality content at your fingertips!

Superhuman - Superhuman is an email management tool.

Chimp Rewriter - Chimp Rewriter is an article rewriter tools that uses the power of AI to analyze and rewrite content at lightning speed. It includes a host of tools for you to create highly unique SEO content, and comprehends more effectively than low-cost Writers.

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.

QuillBot - Quillbot is a free paraphrasing tool that will rewrite any sentence or paraphraph you give it. The article rewriter can rewrite essays or articles and is excellent as a grammar and fluency corrector.

Lavender - Realtime coaching for sales emails.