Grammar Tool

Grammar Tool Success Stories [2025]

Updated: April 13th, 2025

Effective communication is crucial, and a grammar tool can help you master it. Imagine a software that analyzes your writing, highlights mistakes, and suggests corrections—all in real-time. This business idea simplifies the complex process of writing error-free content, whether for personal or professional use.

Creating a grammar tool involves developing an intuitive platform that identifies issues ranging from spelling errors to advanced grammatical mistakes. You'll need a solid understanding of linguistic algorithms and machine learning to build a reliable system. While developing the software may require some technical expertise, once set up, it offers immense scalability.

Given the growing demand for clear and concise communication in the digital age, offering a grammar tool could attract a broad audience—from students and professionals to bloggers and businesses. If you’re passionate about language and technology, this venture could be a rewarding opportunity to ensure that everyone writes with confidence.

In this list, you'll find real-world grammar tool success stories and very profitable examples of starting a grammar tool that makes money.

1. InstaText ($600K/year)

Matej Guid, CEO and co-founder of InstaText, came up with the idea for his AI-based online writing assistant while working as a professor and struggling with editing academic papers. Leveraging advances in AI, Guid and his team created a tool that uses reinforcement learning to continuously improve text, resulting in over half a million active users and more than $50k in monthly revenue in just two years. InstaText was even named the Slovenian Startup of the Year in 2020.

How much money it makes: $600K/year
How much did it cost to start: $50K
How many people on the team: 4

Our AI Writing Tool Won 'Startup Of The Year' And Has Customers In More Than 150 Countries

InstaText is an AI-based online writing assistant that helps non-native speakers improve their English, with over half a million active users from 150 countries worldwide, bootstrapped from $0 to $50k monthly revenue in two years and quadrupled their sales in 2021, becoming Slovenian Startup of the Year and expanding to web applications and browser extensions.

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2. The Word Counter ($240K/year)

In college, the need for a reliable word counter was clear. Like many students, frequent use of character and word counting tools was a necessity, but none stood out as authoritative. Many tools were clunky and lacked comprehensive features, which sparked the idea to create a more user-focused solution.

The aspiration was not just to build another tool but to fill a gap with a product that could be the go-to resource for English language queries. With a strong background in SEO, the idea also presented an opportunity to test and showcase SEO strategies. This led to the development of a one-stop tool that not only counted words but also provided insightful data about writing.

Before development, research into existing tools underscored their shortcomings, guiding the design of a tool that was both easy to use and visually appealing. Feedback during this phase highlighted the need for clear, consolidated information displays. While challenges arose, such as maintaining quality on a budget, the process reinforced the importance of investing in superior development and content.

How much money it makes: $240K/year
How much did it cost to start: $25K
How many people on the team: 1

I Built An Online Word Counter Tool That Makes $20K/Month [Google's Top Result]

Founder Kevin Miller's online word counter tool achieved over 300,000 keyword rankings, over 2,400 domain referrals and made $40,000 per month through Google's top results in just two years through SEO practices, proving the value of investing in quality and SEO.

Read by 13,554 founders