How to Develop AI Writing Assistance App like Grammarly in 2025

“Good writing is clear thinking made visible.” – William Zinsser

There are thousands and millions of people who may find it difficult to communicate in writing in their own voice. Usually, it is miscommunicated or is unclear in their message, which leads to copying content from elsewhere. 

This problem had to be addressed, thanks to the personalized AI guiding & writing tool, Grammarly!

Innovation of Grammarly

Grammarly was introduced by two geniuses, Dima Lider and Alex Schevchenko. The two invented Grammarly for people who wanted to improve their communication in writing while continuing to do their jobs. 

The initial version of this perfect AI writing assistance App focused on correcting grammatical errors. Further, the duo added basic building blocks and mechanics of English writing which gave confidence to people in their work.

As its popularity grew, it was observed that people use Grammarly for different means of communication, like personal emails, essay writing to even professional writing. 

Later, its business model was released which unlocked new revenue opportunities. The new model offered extensions for Chrome, Safari, Firefox, and Microsoft Edge, which gave freedom to use them whenever and wherever they wanted.

Why has AI Writing Assistance Become Popular?

(Source: Statista)

It was observed that around 53% of marketers rely on AI-automated writing tools for even minor edits in publishing.

Another observation explained that AI is used in content creation for: finding ideas and inspiration (45%), creating outlines (31%), drafting content (18%), and completing content writing (6%).

HubSpot also claims that generative AI used in products like Grammarly has a transformative impact in creating content.

With future usage of AI-embedded tools, 82% of communicators expect to have enhanced productivity in the future. Additionally, 43% of communication professionals also believe that AI will bring quality to the work.

Top-Notch Features to Include in AI Writing Assistance Apps like Grammarly Development

Currently, nearly 30 million active users use Grammarly to sharpen their communication skills and write professionally and effectively. If you are looking to build a similar application to Grammarly, it is important to know the core features that make the software outstanding.

1. Paragraph Rewrites

For effective writing, Grammarly assists users by accepting full paragraph rewrites. It also helps craft mistake-free and clear writing suggestions so you write gracefully.

2. Compose

Select who is your reader, in order to set the tone first. With quick and easy prompts you can use Grammarly to draft an entire campaign for a project or email for your team that sounds like you. 

3. Quick Shortcuts

Grammarly leverages every user to access its workplace apps like Drive, Asana, Docs, Slack, Teams, Facebook, etc. This way you get the freedom from switching apps and copying the entire content while staying focused.

4. Snippets

This fantastic AI Writing assistance allows its users to use templates that are repetitively used. Replies such as inconvenience and apologizing templates are readily available to instantly add and send them instead of typing.

5. Analytics

One of the important and recommended features is to track the performance. Grammarly offers an intuitive dashboard that showcases strengths, opportunities, and improvements made to date. 

Also Read: AI Virtual Assistant App Development: Cost and Key Features

6. Plagiarism Detection

Grammarly offers some of the advanced features among which is detecting plagiarism. The software uses AI to detect plagiarism so the user can share their original work without getting agitated.

7. Writing Activity Report

This advanced feature is a must-have. This AI-embedded feature can categorize texts on the dashboard and share a summary showing the use of AI and original text percentage in your content. 

8. Compliance & Security

Grammarly offers robust and stringent measures to protect every bit of information. Grammarly is attested and certified by some of the major safeguards like AICPA SOC, HIPAA, CSA, GDPR, DPF, etc, to protect sensitive user data.

9. Tone Detector

The AI-powered writing assistance has the ability to set the tone you want. With this feature, users can navigate even the most difficult conversations with thoughtful words that resonate with their tone with ease. 

10. General Writing

For expressive and effortless writing, Grammarly offers multiple choices like brainstorming, summarizing, rewording tools, cover letters, Resume objective and skills, business reports, slogans, captions, and much more. 

Benefits of Investing in AI Writing Assistance app like Grammarly

AI assistance with writing is not just recommended to communicate what you think with your reader but much more. It can help businesses organize, analyze, and secure their data.

– Better communication

Using AI assistive writing software, a brand can improve its internal communication as well as improve customer satisfaction. With this tool, brands can identify red flags and receive recommendations to prevent the churn rate proactively. 

– Data Analysis

The AI-integrated tool offers an analytical feature that makes data aggregation easy. Additionally, brands can utilize the unified data to create narrative reports, which further helps in optimizing customer experience & engagement as well as internal processes.

– Organization

Another benefit to develop AI writing assistance like Grammarly is automating and streamlining internal processes. Grammarly saves valuable time by automatically managing your tasks, creating timesheets, streamlining payroll, benefits & other HR events for effective operations & employee engagement. 

– Security

Grammarly is attested and certified by multiple stringent and robust data protection agencies. In order to create a similar application, a productivity app development company must protect user data through methods like litigation warning systems and threat intelligence to run operations smoothly.

– Higher Engagement

By automating tedious tasks with AI-powered tools, brands can empower their employees to focus on more complex & valued work related to forecasting, creating business strategy, and improving customer experiences.

– Smooth Onboarding

One of the advantages of AI technology is organizing data. Utilizing the organized data for onboarding new employees can be highly beneficial as it will reduce the time invested in it. 

Learn More: How To Develop AI Personal Assistant App Like Google Assistant

Alternatives of Grammarly

Grammarly is popular and widespread due to its comprehensive functionality. The ability to adjust style, tone, and clarity, and detect plagiarism gives the application a wide user base. Additionally, this AI tool can seamlessly be integrated with any device or tool for user convenience. 

However, Grammarly isn’t the only tool available in the market that helps in better and more comprehensive writing, there are other looks that you can look into.  

S.No	AI Writing Tool	Feature
1	ProWritingAid	In-depth analysis, suggestions, structuring sentences, style consistency.
2	Hemingway Editor	Simpler alternative suggestions, clear, and concise writing for higher readability.
3	Ginger Software	Grammar and spell checks, contextual and accurate suggestions.
4	LanguageTool	Multilingual support, grammatical error finder for all languages.
5	Wordtune	Rewrite sentences, tone adjustment, text variation, and professional writing.
6	QuillBot	Rephrase or paraphrase sentences while maintaining the original meaning.

Steps to Build AI Writing Assistance app like Grammarly

Step 1: Conceptualize

Research your target audience, competitors, and the pain points that other communication & writing applications miss. Here you can connect with an AI development company to better discuss the scope of your work and features to include in your application.

Step 2: Designing

The next is to develop a prototype of an application like Grammarly. This prototype will explain the look and feel of the application, the color combination, font type & size. This stage will also help in understanding the exact time the development would take. 

Step 3: Back-end Development

The next step is to implement the features by developing the thought architecture. Integrating the right tools, technology, and third-party services will ensure the smooth functioning of the entire application.

Step 4: Testing

This is the most unavoidable or overlooked phase. Testing ensures that the application fits the screens and that all the features are functioning as expected. The design and the placement of icons are correct and the font size adjusts according to the device.

Step 5: Launch 

Finally, comes the deployment. Google Play Store and App Store are among the popular platforms where applications are deployed. These platforms manage millions of users hence it is important to share captivating visuals, screenshots, descriptions, features, and more.

Read More: How to Develop a Text to Speech App Like Speechify?

Technology Stack Integration In an App Like Grammarly

Technology Stack	Functionality
NLP	Refined suggestions with grammar and tone analysis
Machine Learning	Can observe and adapt user behavior for personalized and accurate suggestions
Generative AI	Let you rephrase your writing while keeping the original tone
Cloud Integration	Allow easy, secure, and scalable access to different platforms for sharing data
AI Integration	Write cover letters, business reports, job descriptions & more.

Cost To Develop An AI Writing Assistance

When it comes to developing an application cost plays a major role. As you go towards developing a premium product the cost of it increases. Also, the cost varies when advanced features are added. 

With that said, there is no fixed amount to develop an AI writing assistance application. Additionally, the mobile app development cost varies from company to company. But, typically the cost range between $25,000 to $120,000.

Factors that affect the cost of developing an AI writing assistance app are:

• The platform you want to use to develop the product.
• The more features you embed the more development cost gets higher.
• Advanced and complex features like NLP, Cloud & other integrations can significantly increase the cost.
• The development team: freelance or agency. Hiring either of them impacts the cost.

Upcoming AI Trends 

• AI Assistance to rise continuously without replacing the voice of the writer.
• Rise in AI-driven user interface for easy interaction.
• Enhanced AI detection for responsible and ethical usage of the tool.
• Optimized content for AI searches along with traditional SEO.
• Cost-effective and highly customizable AI videos.
• Companies to become more transparent with the use of AI in customer interactions.
• Specialized AI tools with advanced reasoning.
• AI to AI communication for streamlining workflows & repetitive tasks.
• The comeback of predictive AI in the business sector.
• SLMs prove to be efficient neural networks for processing power.
• More focus on results or solutions instead of using the term ‘AI’.
• Transformative impact with the merger of physical and digital strategies.
• Understanding and mimicking human emotion making emotional AI.
• Removing the barrier of prompt engineering to realize the full potential of AI.

Future of AI In Communication Business

There is no doubt in saying that people or businesses investing in AI receive positive returns. The stats will justify the aforementioned statement: AI technology was valued at $27.23 billion in 2019 and is expected to grow by $266.92 billion by 2027.

Applications like Grammarly will not only organize and stabilize business processes & employee engagement but also save valuable time, resources, and money. Investing in AI-embedded tools offers good communication saving brands up to $62.4 million per year improving productivity & streamlining workflows while improving employee retention by 50%. 

To summarise, financing for future perspective in AI will always be beneficial looking at its swift adoption and advancement.

Frequently Asked Questions