Software Alternatives, Accelerators & Startups

Day One VS ForthWrite

Compare Day One VS ForthWrite and see what are their differences

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Day One logo Day One

A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.

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
  • Day One Landing page
    Landing page //
    2023-09-14
  • 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.

Day One

$ Details
-
Platforms
-
Release Date
-
Startup details
Country
United States

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

Day One features and specs

  • User-friendly Interface
    Day One features a clean and intuitive user interface, making it easy for users of all skill levels to navigate and use the app effectively.
  • Cross-Platform Availability
    Available on iOS, macOS, and Android, allowing users to access their journal entries across multiple devices.
  • Rich Media Support
    Supports various types of media, including photos, audio recordings, and videos, enriching journal entries beyond just text.
  • End-to-End Encryption
    Provides robust security for journal entries with end-to-end encryption, ensuring user data privacy.
  • Synchronization
    Automatic syncing across devices ensures that users always have the most up-to-date version of their journal.
  • Prompts and Templates
    Offers writing prompts and templates to help users overcome writer's block and get inspiration for their entries.

Possible disadvantages of Day One

  • Premium Subscription
    Many advanced features require a subscription to Day One Premium, which might be a drawback for users looking for a fully free solution.
  • Limited Free Version
    The free version is quite limited in terms of functionality and storage, which could be restrictive for avid journaling users.
  • No Windows or Web Client
    Currently does not offer a native Windows application or a web-based client, limiting access for users who primarily use these platforms.
  • Learning Curve for Advanced Features
    While the basic functionality is user-friendly, advanced features and customization options may require a learning curve.
  • Performance Issues
    Some users have reported occasional performance problems, such as slow syncing or app crashes, which can hinder the user experience.

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 Day One

Overall verdict

  • Day One is considered a top choice for digital journaling due to its user-friendly interface and comprehensive feature set. Whether you need a simple daily journal or a detailed diary with photos, audio, and more, Day One provides a robust solution.

Why this product is good

  • Day One is a well-regarded journaling app praised for its intuitive design, robust features, and cross-platform syncing. It offers capabilities like multimedia entries, location tagging, and end-to-end encryption, making it both secure and versatile for users who wish to document their daily lives or specific events comprehensively.

Recommended for

  • Individuals who appreciate a clean, organized journaling interface.
  • Users who value privacy and security, with features like encryption and passcode protection.
  • Those who wish to include multimedia elements in their entries, such as photos and audio recordings.
  • Journalers who prefer seamless syncing across multiple devices.
  • People who enjoy recording details like weather and location to add context to their entries.

Day One videos

Day One Journal App Review | all features, pricing and opinions

More videos:

  • Review - Best Journal App: Day One App 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 Day One and ForthWrite)
Note Taking
100 100%
0% 0
Writing Tools
0 0%
100% 100
Journal
100 100%
0% 0
Email
0 0%
100% 100

Questions & Answers

As answered by people managing Day One 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 Day One 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 Day One and ForthWrite

Day One Reviews

  1. Elizabeth Howard
    ยท Writer at Elizabeth Howard Digital Marketing ยท
    I live in Day One

    I have been using Day One since it was in beta. I am a writer and digital content specialist so I do a lot of writing. Day One has grown in capability and beauty since its inception -- I use it more and more everyday.

    To be frank, I tried to use EverNote but found to cumbersome and a bit much. For my mind, Day One provided the perfect palelette for me to sit down and write anything -- the tag it, or easily move it to another journal. It allows up to 10 journals, one of which I have synced to my Instagram, as I like to keep a record of what I post there.

    If you are writing daily, doing Morning Pages, if you blog and need a place to work on drafts, Day One's set up is so easy. It syncs over the cloud to your phone (I'm on Apple products, recognizes voice to text smoothly and allows images to be easily drag and dropped.

    The interface with tagging could be slightly more intuitive but the team is constantly doing updates and I am sure that will be worked out soon.

    I love it and recommend it to anyone writing.

    ๐Ÿ Competitors: Evernote, Scrivener, Microsoft Word, Google Docs
    ๐Ÿ‘ Pros:    Intuitive|Beautiful search experience|Instagram|Easy user interface|Inexpensive|Great for writers|Great value for the money
    ๐Ÿ‘Ž Cons:    Tagging needs to be made easier

The 8 best journal apps of 2022
Perhaps Day One's best feature is the ability to customize multiple reminders. Most other journal apps only send you one reminder during the day. But with Day One, you can get prompted to write, say, when you start the day, at lunchtime, and then at the end of your workday to keep track of your activities and thoughts throughout the day.
Source: zapier.com
5 Best Apps That Make Journaling Super Convenient In 2022
For a journaling app with a beautiful design and basic features, the Day One journal is an excellent option. This digital journaling app is easy to use but doesnโ€™t scrimp when it comes to useful tools that make journaling fun and easy.
Source: integrately.com
Day One Alternatives: 7 Best Journal Apps You Can Use
Day One Journal has adopted the subscription model for its pricing and it has made many of its users angry. I can live with a subscription model for apps like Day One which I use on a daily basis, however, I do think that the subscription is a bit over priced. If you were looking for its alternatives, we have covered the best ones available in the market today. Do tell us if...
Source: beebom.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, Day One seems to be more popular. It has been mentiond 32 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.

Day One mentions (32)

  • Show HN: Text Lambda, a versatile notebook for your personal data
    Well done! itโ€™s cross platform. I can see this be used as a geek-friendly Day One [1]. [1] https://dayoneapp.com/. - Source: Hacker News / over 2 years ago
  • Looking for a windows app
    Have you tried dayoneapp.com - its been a long time since I used it, it's more of an iOS app than Windows but I think it works on the web. Source: over 2 years ago
  • desperate for help
    I journal on and off but I find it difficult to get myself to make it stick as a habit. Physical journaling is tough sometimes because I'm not home etc etc... But I'm thinking of trying out the Day One journal. Source: about 3 years ago
  • Appleโ€™s new journaling app turns your iPhone into a digital diary
    Thereโ€™s been journaling apps since iPhone came out, like the excellent Day One. Source: about 3 years ago
  • What laptop and apps do you use to write?
    For general diary writing, I use Day One. It's clean, easy to use, and has no frills. You just...write. When I got it, it was one price but now it's a subscription for $2.99 a month. Source: about 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 Day One and ForthWrite, you can also consider the following products

Daylio - Daylio enables you to keep a private diary without having to type a single line.

Superhuman - Superhuman is an email management tool.

Journey - A diary that keeps your private memories forever.

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.

Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.

Lavender - Realtime coaching for sales emails.