Software Alternatives, Accelerators & Startups

Centered VS ForthWrite

Compare Centered VS ForthWrite and see what are their differences

Centered logo Centered

Centered helps you get into a Flow State faster and stay there longer so you can do your best work.

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
  • Centered Landing page
    Landing page //
    2023-08-25
  • 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

Centered features and specs

  • Focus Sessions
    Centered offers structured focus sessions that help users maintain concentration on tasks by providing timed work periods followed by breaks.
  • Distraction Blocking
    The app can block distracting websites and applications, allowing users to focus better on their work.
  • Music for Productivity
    Centered provides curated music tracks designed to boost concentration, helping users enter a state of deep focus more easily.
  • Task Management
    Users can organize their tasks and to-do lists within the app, aiding in better task management and prioritization.
  • Community and Accountability
    Centered fosters a community where users can join focus groups or accountability partners, enhancing motivation and commitment.

Possible disadvantages of Centered

  • Subscription Cost
    To access all features, users may need to subscribe to a paid plan, which can be a drawback for those looking for free options.
  • Learning Curve
    Some users might experience a learning curve when setting up the app and using all of its features effectively.
  • Limited Free Features
    The free version of Centered may have limitations, restricting the availability of certain productivity tools unless upgraded.
  • Dependence on External Distractions
    While blocking distractions, users might become too reliant on the app to manage distractions rather than cultivating personal discipline.
  • Platform Dependency
    Centered may not be available on all devices or platforms, potentially limiting accessibility for some users.

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

Centered videos

Centered Review: Improve Productivity with AI Coaching and Focus Music

More videos:

  • Review - Centered Review: Is THIS the Best Productivity App in 2023?
  • Review - Centered Review: AI-powered coaching, Pomodoro timers to boost productivity

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 Centered and ForthWrite)
Productivity
100 100%
0% 0
Writing Tools
0 0%
100% 100
Task Management
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Centered 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 Centered and ForthWrite

Centered 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)

Social recommendations and mentions

Based on our record, Centered seems to be more popular. It has been mentiond 5 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.

Centered mentions (5)

  • Obsidian as all-in-one daily note(calendar, reminder, task management, ledger...)
    - weak for bodydoubling method: I still need to use separate app for bodydoubling. i.e. cen****d.app. This bodydoubling app makes me to focus on task by sharing my current task with other users. This also has `always on top with minimized UI` option, which works great for the focus. However, it causes another clutter for me because I need to write down the task in a separate app again. I want to replace it if... Source: about 3 years ago
  • What is the best purchase you have made to make life with adhd easier?
    Centered.app application helps me a lot to work and to stay focused. It seems - the best and only task management systems designed for people with ADHD. Source: over 3 years ago
  • Desktop app which reminds you to stay on your task/ stop even work distractions?
    The centered.app does look good and the most close to what I am looking for compared to the hundreds I have googled today, I am giving it a go, thank you! Source: almost 4 years ago
  • Top 5 Online Study Websites and Virtual Work Spaces
    I also recently discovered centered.app which is free for students. Source: about 4 years ago
  • A Fun Linear Integration!!!
    You can learn more at centered.app or feel free to message me!! I'd be happy to offer you all my personal onboarding too!! 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 Centered and ForthWrite, you can also consider the following products

Magic Flow - Generate high-converting landing page copy using GPT-3

Superhuman - Superhuman is an email management tool.

Llama Life - Say goodbye to never-ending lists, and hello to daily bliss

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.

Blitzit - A simple to-do list & timer that gives you superpowers

Lavender - Realtime coaching for sales emails.