
Copyleaks
Originality.AI
GPTZero
ZeroGPT
AI or Not
Sightengine
AI-Checker.info
Video, images, text, documents: detect AI in one simple toolkit. Check text instantly and privately, 100% free with no account needed.

ReclaimAI
Superhuman
Shortwave
Serif AI
Gemini
Gmail
LIAM
Email that sounds like you, and gets measurably more like you every week. Drafts in Gmail, Outlook, and the browser. Free to start.

Which is more popular?
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | iachecker.com | forthwrite.ai |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of IA Checker 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...
What each product offers, as listed by its team.


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


No analysis of IA Checker yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing IA Checker and ForthWrite.
ForthWrite's answer:
Next.js, React, Supabase, Anthropic Claude, OpenAI, Stripe, Vercel, Chrome Extensions API
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.
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.
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.
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.
Share your experience with using IA Checker and ForthWrite. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


We have no reviews of IA Checker yet. Be the first one to post
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...
When comparing IA Checker and ForthWrite, you can also consider the following products.

Copyleaks, where technology meets integrity.
Compare Copyleaks to IA Checker or ForthWrite:

Helps users prioritize their work and personal calendars
Compare ReclaimAI to IA Checker or ForthWrite:

Protect your reputation and improve your content quality by accurately detecting duplicate content and artificially generated text with the most accurate AI detection tool on the market.
Compare Originality.AI to IA Checker or ForthWrite:


Email smarter & faster with a reinvented experience for your Gmail
Compare Shortwave to IA Checker or ForthWrite: