Software Alternatives, Accelerators & Startups

Fantastical 2 VS ForthWrite

Compare Fantastical 2 VS ForthWrite and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Fantastical 2 logo Fantastical 2

Fantastical, the Mac calendar app you'll enjoy using. Quickly create new events with natural language input and more.

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
  • Fantastical 2 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.

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

Fantastical 2 features and specs

  • User Interface
    Fantastical 2 has an intuitive and visually appealing interface, making it easy for users to navigate and manage their calendar events.
  • Natural Language Parsing
    The app allows users to create events using natural language input, which makes event creation faster and more user-friendly.
  • Integrations
    Fantastical 2 integrates seamlessly with other calendaring services like iCloud, Google Calendar, Exchange, and more, ensuring that all your events are centralized.
  • Reminders
    The app supports Apple's Reminders, which allows users to manage tasks and events in one place.
  • Customizable Views
    Fantastical 2 offers various view options (day, week, month) that can be customized to suit different user preferences.

Possible disadvantages of Fantastical 2

  • Cost
    Fantastical 2 is relatively expensive compared to other calendar apps, which might be a deterrent for some users. There's a one-time cost for Fantastical 2, but the new versions may require a subscription.
  • Platform Limitation
    The app is primarily designed for Apple devices, which means Android and Windows users are unable to use it.
  • Learning Curve
    New users may need some time to get accustomed to the app's features and capabilities, despite its intuitive interface.
  • Occasional Sync Issues
    Some users have reported occasional sync issues, where calendar events do not appear consistently across all devices.
  • Limited Free Features
    Fantastical 2 offers limited features in the free version, pushing users towards the premium subscription to unlock the full functionality.

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

Fantastical 2 videos

Friday 5: Fantastical 2 - my favorite Mac calendar app!

More videos:

  • Review - Fantastical 2 Review

ForthWrite videos

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

Add video

Category Popularity

0-100% (relative to Fantastical 2 and ForthWrite)
Calendar
100 100%
0% 0
Writing Tools
0 0%
100% 100
Appointments and Scheduling
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Fantastical 2 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 Fantastical 2 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 Fantastical 2 and ForthWrite

Fantastical 2 Reviews

15 Best Free Daily Planner Apps for 2024 (Features, Price)
Natural language support for easy scheduling. Seamless synchronization across multiple calendars. Recurring task-setting capabilities. Geofenced reminders for the most relevant tasks. Pricing: Fantastical 2 is available as a free planner app.
Source: affine.pro
The 13 best calendar apps for Android and iOS help you organize a chaotic day
Many of the appโ€™s features are standard fare and just what youโ€™d expect a calendar app to offer, but Fantastical 2 strives to make every process more convenient in order to save time. For example, you can start a sentence with โ€œreminder,โ€ โ€œto do,โ€ or โ€œtaskโ€ to create reminders, or use phrases like โ€œremind me tomorrow at 3PM,โ€ or โ€œalarm 3PMโ€ to set new alerts. You can also...
Beyond Google Calendar and Apple Calendar: The 18 Best Apps to Manage Your Schedule
While it's nice to have the mobile app, Fantastical 2 is at its best on desktop. The app is colorful without being gaudy or overwhelming, and it's easy to use without sacrificing control over your event details. On a Mac, the menu bar app lets you quickly add an event or see what's on your agenda in the coming days. Adding details to your eventsโ€”such as notes, URLs,...
Source: zapier.com

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, Fantastical 2 seems to be more popular. It has been mentiond 28 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.

Fantastical 2 mentions (28)

  • Sketchy Calendar
    * Built-in countdown-type events, with associated UI element that counts down for you My main desire is not switch calendaring platforms, but to figure out how to 'bolt-on' these capabilities in what I'm already living in. -- [0] https://www.hey.com/calendar/ [1] https://flexibits.com/fantastical. - Source: Hacker News / about 1 year ago
  • Ask HN: What macOS apps/programs do you use daily and recommend?
    - Raycast (https://www.raycast.com/) there's also a free version, I just prefer to support the author with a Pro purchase. - Homebrew (https://brew.sh/) - Visual Studio Code - SyncThing (https://syncthing.net/) - Fantastical (https://flexibits.com/fantastical) - MonitorControl (https://github.com/MonitorControl/MonitorControl#readme). - Source: Hacker News / about 2 years ago
  • Calendar advice for home + work?
    I use an app called Fantastical (https://flexibits.com/fantastical). I believe it is macOS/iOS only, but there might be alternatives with work with other systems. Basically, I add in my work Office365 account and my personal iCloud and it shows everything together. Whenever I'm making an appointment, I just check that rather than my Outlook calendar. Source: about 3 years ago
  • Sick of Fastmails subpar iOS app
    Looks like most of your issues are with the calendar. For this I highly recommend an app dedicated to this, like Fantastical, BusyCal, Calendar366 or even a native ios calendar app. These apps have clients for ios, macos and even watchos. Lots of config options and nice features and timely notifications. Source: over 3 years ago
  • Productivity apps - recommendations needed
    I personally have been trying out Fantastical and it literally is life changing doing everything in a calendar. You can make a recurring event or something and have it notify you whenever you want. The time limit can be achieved by just creating the duration. Although I'm unsure about the "mark as done" functionality. Source: over 3 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 Fantastical 2 and ForthWrite, you can also consider the following products

Google Calendar - Spend less time managing your day & more time enjoying it

Superhuman - Superhuman is an email management tool.

Morgen.so - All-in-one Calendar, Tasks & Scheduler. Morgen is the single hub for everything that revolves around time management.

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.

Apple Calendar - Calendar is a personal calendar app made by Apple Inc. that runs on both the macOS desktop operating system and the iOS mobile operating system.

Lavender - Realtime coaching for sales emails.