Software Alternatives & Startups
Register | Login

Grammarly VS ForthWrite

Compare Grammarly VS ForthWrite and see what are their differences

Grammarly

Clear, effective, mistake-free writing everywhere you type.

Rating
4.4 · 5 reviews
Pricing
Freemium $12 / Monthly (Premium)
Alternatives Is it good?
ForthWrite

Email that sounds like you, and gets measurably more like you every week. Drafts in Gmail, Outlook, and the browser. Free to start.

Rating
5.0 · 1 review
Pricing
Freemium Free trial $12 / Monthly (Standard plan)
Alternatives Is it good?
Mind Diary
MindDiary therapy practice management software: digital intake, lead capture, client check-ins, therapist-reviewed AI notes, telehealth, and revenue follow-up. sponsored

Which is more popular?

Based on our record, Grammarly seems to be more popular. It has been mentioned 85 times since March 2021.

social mentions
85 vs 0
user rating
4.4 vs 5.0
Writing Tools popularity
99% vs 1%
alternatives listed
240+ vs 13

Base details

Website, pricing, platforms and company facts side by side.

Grammarly
ForthWrite
Website grammarly.com forthwrite.ai
Pricing
Freemium $12 / Monthly (Premium) Official pricing
Freemium Free trial $12 / Monthly (Standard plan) Official pricing
Platforms —
Web
Company Startup from the United States · 500 - 999 employees · 2009 Startup from the United States · 1 - 9 employees · 2026
Listed in
Grammar Checker Proofreading Spell Checker English Writing Tools +2
Email Writing Tools AI Writing Email Productivity AI Productivity Writing +4

About Grammarly and ForthWrite

In their own words, as submitted to SaaSHub.

Grammarly
ForthWrite

No description of Grammarly yet.

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...

Read more about ForthWrite

Features and specs

What each product offers, as listed by its team.

Grammarly 6 features
ForthWrite 7 features
  • Ease of Use
    Grammarly is designed with a user-friendly interface that makes it easy for users to check their writing quickly. Its real-time suggestions and simple navigation facilitate hassle-free proofreading.
  • Comprehensive Grammar and Spelling Checks
    Grammarly provides extensive grammar and spelling checks, identifying even subtle errors that are often missed by standard word processors.
  • Writing Style Improvement
    The tool offers suggestions to improve readability, tone, and overall writing style, which is beneficial for both casual writers and professionals.
  • Plagiarism Detection
    Grammarly's premium version includes a plagiarism checker that scans text against billions of web pages, providing an extra layer of proofreading for academic and professional work.
  • Customization
    The tool allows users to set their writing preferences, such as choosing American or British English, and to customize the rules based on their needs.
  • Cross-Platform Availability
    Grammarly can be accessed via browser extensions, desktop apps, and mobile apps, making it versatile for different use cases and devices.

Possible disadvantages

  • Costly Premium Subscription
    While the basic version is free, the premium subscription can be expensive for some users, limiting access to advanced features.
  • Overreliance Risk
    Users may become overly reliant on Grammarly, which can hinder their development of personal proofreading and editing skills.
  • Potential Privacy Concerns
    Since Grammarly processes and stores user data, there may be potential privacy concerns regarding the handling of personal and sensitive information.
  • Inconsistent Accuracy
    Although advanced, Grammarly is not flawless and may occasionally provide incorrect suggestions or fail to catch certain errors.
  • Limited Context Understanding
    Grammarly sometimes struggles with understanding contextual nuances, leading to inappropriate grammar or style suggestions.
  • Requires Internet Connection
    The tool requires a continuous internet connection to function, which can be a limitation for users with unreliable or no internet access.
  • 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

An editorial look at what each product does well and who it suits.

Grammarly
ForthWrite

Overall verdict

  • Overall, Grammarly is considered a valuable tool for anyone looking to enhance their writing quality. Its comprehensive feedback and user-friendly interface make it a worthwhile investment for individuals who frequently engage in writing-related tasks. However, the premium version offers more advanced features beyond the free version, such as vocabulary enhancement suggestions and a plagiarism detector.

Why this product is good

  • Grammarly is a popular writing assistant tool that helps users improve their writing skills by offering real-time grammar, spelling, and style suggestions. It uses advanced algorithms to provide detailed feedback on sentence structure, tone, and clarity, making it useful for various types of writing, from academic papers to casual blog posts. Grammarly also integrates seamlessly with multiple platforms and browsers, enhancing its accessibility and utility for users across different devices.

Recommended for

  • Students looking to improve their academic writing and reduce errors.
  • Professionals who need to maintain clear and polished communication.
  • Content creators and bloggers aiming to produce high-quality, error-free content.
  • Non-native English speakers seeking assistance with language nuances.

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

Videos

Walkthroughs and reviews on video.

Grammarly 3 videos + Add
ForthWrite 0 videos + Add

Grammarly Review: Is it worth it, and what you NEED to know!

More videos

  • - Grammarly Review 2019: Grammarly Pros and Cons and if You Should Use it
  • - Grammarly 2020 | Review, Features & Pricing

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

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Grammarly
ForthWrite
99% 99%
Writing Tools
1% 1%
0% 0%
Email
100% 100%
100% 100%
Grammar Checker
0% 0%
0% 0%
Email Productivity
100% 100%

Questions & Answers

As answered by people managing Grammarly 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 Grammarly and ForthWrite. For example, how are they different and which one is better?

Log in or Post with

Reviews and articles

External articles and on-site reviews we used to compare the two products.

Grammarly 4.4 · 5 reviews
ForthWrite 5.0 · 1 review

View more

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Grammarly 85 mentions
ForthWrite 0 mentions

View more

Tracking ForthWrite since Jun 2026.

Alternatives to Grammarly and ForthWrite

When comparing Grammarly and ForthWrite, you can also consider the following products.

Loading...