Software Alternatives, Accelerators & Startups

Gyroscope VS ForthWrite

Compare Gyroscope VS ForthWrite and see what are their differences

Gyroscope logo Gyroscope

Gyroscope is a personalized dashboard for tracking your life.

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
  • Gyroscope Landing page
    Landing page //
    2023-04-21
  • 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.

Gyroscope

Website
gyrosco.pe
$ 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

Gyroscope features and specs

  • Comprehensive Health Tracking
    Gyroscope provides an all-in-one platform for tracking various health metrics, including fitness, sleep, heart rate, and more. It integrates data from multiple sources to offer a holistic view of your health.
  • Data Visualization
    The app excels in presenting data through visually appealing and easy-to-understand graphs and charts, making it simpler for users to interpret their health metrics.
  • Integration with Other Apps
    Gyroscope can integrate with several popular health and fitness apps like Apple Health, Fitbit, and MyFitnessPal, offering users a centralized place for all their health data.
  • Goal Setting and Personalization
    Users can set personalized health goals, and the app provides insights and recommendations tailored to individual needs, helping them achieve these goals.
  • Privacy and Security
    Gyroscope prioritizes user privacy and data security, offering strong data encryption and privacy controls to keep personal information secure.

Possible disadvantages of Gyroscope

  • Subscription Cost
    Some of Gyroscope's advanced features require a premium subscription, which might be costly for users not willing to pay for additional functionality.
  • Overwhelming for Beginners
    The app's extensive features and detailed metrics can be overwhelming for new users who may find it challenging to navigate and utilize all available tools.
  • Battery Consumption
    Continuous health tracking and data synchronization can drain the battery life of your mobile device more quickly than other apps.
  • Limited Device Compatibility
    Some users have reported issues with compatibility with certain devices or specific models, potentially limiting its accessibility.
  • Data Accuracy
    As the app aggregates data from multiple sources, the accuracy of the metrics can sometimes be inconsistent, depending on the quality of the integrated data.

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 Gyroscope

Overall verdict

  • Whether Gyroscope is 'good' largely depends on individual needs and preferences. It is well-regarded for its ability to integrate data from multiple sources and provide actionable insights. However, some users may find its features overwhelming or not necessary for their lifestyle.

Why this product is good

  • Gyroscope is a platform designed to help users track and visualize various aspects of their life, such as health metrics, productivity, and activities, using data from different apps and sources. It offers comprehensive analytics and insights that can be beneficial for personal growth and well-being.

Recommended for

  • Individuals interested in self-improvement and personal analytics.
  • Users who appreciate detailed health and activity tracking.
  • Tech-savvy individuals who enjoy integrating various apps and data sources for a holistic view of their lifestyle.

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

Gyroscope videos

$80 Gyroscope vs $5 Gyroscope

More videos:

  • Review - Mechforce EDC Gyroscope - Review by Ambidextrous spin
  • Review - Tedco Original Toy Gyroscope review

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 Gyroscope and ForthWrite)
Health And Fitness
100 100%
0% 0
Email
0 0%
100% 100
Productivity
100 100%
0% 0
Email Productivity
0 0%
100% 100

Questions & Answers

As answered by people managing Gyroscope 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 Gyroscope and ForthWrite

Gyroscope Reviews

We have no reviews of Gyroscope yet.
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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, Gyroscope seems to be more popular. It has been mentiond 8 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.

Gyroscope mentions (8)

  • What's your QS Stack?
    So I have them like this:- Dashboard: Gyrosco.pe (planning on checking out Exist.io/Conjure.so/Bearable just to compare between them and see which one's best). I've got gyrosco.pe on a good deal so I thought I'd give it a try anyway. Source: almost 3 years ago
  • Tracking Apps
    Hey guys, thinking of tracking wellness metrics such as sleep water intake etc to a dashboard/app. The main tools I have found are Exist.io, Gyrosco.pe, and conjure.so. For those of you who have tried them I would love to know what are the pros and cons with each one? Or if you have any better ones any help is greatly appreciated! Source: about 3 years ago
  • Best apps to use
    Hey guys, thinking of transporting my quantified self journey to a dashboard/app. The main tools I have found are Exist.io, Gyrosco.pe, and conjure.so. For those of you who have tried them I would love to know what are the pros and cons with each one? Source: about 3 years ago
  • Exist.io / Bearable.app Self Hosted Alternative
    Https://gyrosco.pe may be something I expore but it's not self hosted either. Source: over 3 years ago
  • Oura + Apple Watch
    Not to complicate things but I use an app called Gyroscope https://gyrosco.pe/ and it ingests data from both Apple Watch and the Oura Ring to give you a more holistic view. Also, this way if Iโ€™m not wearing one device Iโ€™m still getting data from the other. Also using Pillow with Apple Watch for sleep when I wear the watch to sleep. But overall, I do agree that there is quite a gap between how Apple Watch and Oura... 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 Gyroscope and ForthWrite, you can also consider the following products

Exist - Track everything in one place, understand your life.

ReclaimAI - Helps users prioritize their work and personal calendars

Everyday - Take a photo of yourself everyday.

Superhuman - Superhuman is an email management tool.

Habitica - Habitica is a free habit building and productivity application.

Shortwave - Email smarter & faster with a reinvented experience for your Gmail