Traditional keyboards lacked smart rewriting and grammar support. We spotted an opportunity, and brought QuillBot’s tools to mobile keyboards, enhancing the way people write every day.”
• 10 min read
Paraphrase — 7+ modes — Custom mode
Adjust Synonyms — Grammar Suggestions — Auto Correction
Proactive Suggestions — Next word Predictions — Swipe Typing
Emojis — MultiLingual Support
In a world where writing happens everywhere, the need for efficient, on-the-go tools has never been greater. Through user feedback and research, we discovered a strong demand for mobile accessibility. Traditional keyboards offered no rewriting, grammar, or contextual support — so we saw an opportunity to bring QuillBot’s core strengths, like paraphrasing and grammar checking, directly to mobile keyboards. Competitor insights validated this direction, showing how mobile integration could elevate both user experience and brand loyalty. Our goal was simple: redefine mobile writing and bring QuillBot’s trusted tools to where people write most.
What was my role?
Product Designer, Strategist, and Usability Evaluator
Who did I work with?
Shubhashish Sinha (PM), Christian Konrad (PM), Marine Asalia (Director of Engg.)
What did I work on?
Product Design, Strategy, Assisted in User Research, Visual Design, Interactive Prototypes, and Usability Tests
What did I learn?
Design for Mobile Keyboards, Design a daily use product, Making mobile writing better
What tools did I use?
FigJam (Brainstorming & workshops), Figma (Visual Design - Prototyping - Dev hand-off), Google for secondary research
Understanding our users’ needs and behaviors was key to designing QuillBot’s mobile keyboard. Our audience includes a diverse group of writers who use tools to boost productivity, creativity, and communication in different contexts. These user archetypes helped us shape a solution that fits naturally into everyday writing.
By identifying shared pain points and goals, we designed a product that aligns with real habits and expectations. Below is a summary of the insights that guided our development process.
43.7% of QuillBot users opt to write on their mobile devices when away from their laptop or desktop, while 25% write exclusively on mobile devices.
Over 70% of QuillBot mobile users are under the age of 24, with 18-24 year olds forming the largest group of mobile users.
46% of surveyed users write professional documents using their mobile devices, which is higher than expected.
of the global workforce works remotely, and U.S. freelancing is set to reach 50% by 2027 — making mobile-friendly writing tools more essential than ever.
smartphone users worldwide as of 2024, representing nearly 86% of the global population
of global web traffic now comes from mobile devices, signaling a shift toward mobile-first engagement.
Mobile app usage is expected to reach 4.5 billion active mobile app users by 2026
To integrate QuillBot’s big, fat, powerful tools into a mobile keyboard, we took a collaborative approach—sketching interface concepts, prototyping interactions, and refining solutions to balance user needs with technical feasibility, all within the constraints of a compact keyboard.
Work for Contextual Relevance
Show the right tool at the right time, based on user intent and input context.
Avoid over complicating
Keep interactions simple and intuitive, even when offering powerful features.
Every tap deserves a response
Give clear visual or haptic feedback to confirm every user action is recognized.
Guide the flow
Ensure smooth transitions between features without breaking the user’s rhythm.
QuillBot’s paraphraser is a powerful tool designed to help users rewrite and refine text with precision, offering a suite of modes, style options, and other advanced features. While these capabilities are seamless on a desktop interface, transferring them into the limited real estate of a mobile keyboard required rethinking and reimagining the experience.
We focused on what mattered most to mobile users — paraphrasing and grammar checking. The challenge was keeping them simple, intuitive, and powerful within a small keyboard interface.
We offered just the right number of paraphrasing modes to cover key use cases. The result — depth for those who need it, simplicity for everyone else.
We used layered interactions. Power users could dig deeper, while casual users stayed one tap away from quick rewrites. This kept the UI clean and the experience effortless.
We optimized backend performance and fine-tuned iOS and Android integrations to make rewrites fast, accurate, and seamless within tight device limits.
Continuous testing and real-world feedback shaped the product, ensuring it worked well in real-world conditions.
We built the paraphraser for everyday writing — emails, texts, and posts — with smart, in-context suggestions.
QuillBot’s Custom Mode is where personalization meets precision. While preset modes like Standard, Fluency, and Creative cover common tones, Custom Mode lets users fine-tune their own. Adjust formality, creativity, or brevity to shape a style that matches your unique voice. Whether writing for work, study, or self-expression, Custom Mode ensures your words fit the context — and feel authentically you.
QuillBot’s Grammar Checker is your go-to for clean, confident writing — wherever you write. From emails and essays to quick chats, it catches everything from typos to complex errors. Beyond fixing mistakes, it helps you learn through contextual suggestions, making every edit a step toward better writing.
Bringing QuillBot’s premium features to mobile meant rethinking how users upgrade on the go. We simplified in-app purchases for a seamless, secure experience across Android and iOS — making it effortless to unlock advanced tools anytime, anywhere.
Data in first 1 year
Designing a multilingual keyboard meant creating an experience that adapts to diverse writing needs. Supporting English, Spanish, French, and German — plus layouts like QWERTY and AZERTY — we focused on effortless switching, helping users write comfortably in any language.
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Throughout the product journey, I wore many hats — collaborating with product managers, developers, designers, UX writers, legal teams, and other teams to ensure the project’s success.
This collaborative approach, paired with the flexibility to take on multiple roles, helped create a well-rounded product that aligned with user expectations and business goals.
We began with extensive internal testing, gathering feedback to identify usability issues and refine features. After launch, the iteration continued — blending internal insights with real user feedback to fix bugs and enhance functionality. This approach helped the product evolve into a seamless, reliable solution.
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Understanding how people actually used the app was key to improving QuillBot Mobile after launch. We gathered insights through in-app analytics, surveys, and app store reviews to see how users engaged with features like in-app purchases and writing tools. This helped us spot friction, measure satisfaction, and refine design choices — creating a smoother experience for our global audience..
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