Hintsay: AI writing assistant for LinkedIn
Months of LinkedIn content in minutes, in your own voice
Hintsay is an AI writing assistant that helps professionals build their personal brand on LinkedIn — turning a keyword or an idea into finished, on-brand posts in minutes instead of hours. I designed and built it end to end, from the AI that writes in your voice to the interface that keeps you in control. The promise, in one line: generate months of LinkedIn content in minutes.
I The work
01
Problem
Most professionals know that showing up on LinkedIn grows their brand and their business. Actually doing it, consistently, is the hard part:
- No time to write regularly next to a full workload
- Writer's block — staring at a blank post with no angle
- Guesswork about what actually resonates with their audience
- Voice drift — hard to sound like themselves at speed
- Inconsistency — irregular posting quietly kills reach
02
Approach
A writing assistant that makes content creation faster and better — without taking the person out of the loop.
03
What it does
- Generates posts from proven, high-performing templates
- Turns a keyword into ready-to-use topic suggestions
- Personalises to your LinkedIn profile so it sounds like you
- Works in English and Dutch
- Keeps your personal voice and style intact
04
Design process
| Phase | What happened |
|---|---|
| Research & discovery | Analysed LinkedIn posting patterns, interviewed content creators, ran competitive and performance analysis |
| Design & prototyping | Minimalist, speed-first UI; iterated on UX and A/B-tested key features |
| AI integration | Trained on high-performing posts, built personalisation, added quality checks and a continuous-improvement loop |
05
How it works
Content generation
- AI-written posts from a keyword or idea
- Proven templates for different content types
- Personalisation based on your LinkedIn profile
- Adjustable tone of voice
- English & Dutch (EN/NL)
- Real-time preview and inline editing
Content strategy
- Topic suggestions and brainstorming
- Content-calendar planning
- Performance insights (coming soon)
- Audience-engagement tracking
- Best practices and tips
- Advice on diversifying your content
II Outcome
06
Impact & results
| Figure | Meaning |
|---|---|
| 10× | Faster content creation |
| 7 days | Free trial |
| 2 languages | English & Dutch |
| ∞ | Content possibilities |
07
Tech & stack
- Frontend & UX — modern React interface, real-time content preview, responsive design, fast load times
- AI & backend — LLM-powered generation with a personalisation layer, a continuous-learning pipeline, secure API architecture, and scalable cloud infrastructure
08
Key takeaways
- AI as assistant, not replacement — people want to stay in control of what goes out under their name.
- Speed is the product — professionals have little time; every second of friction costs a post.
- Personalisation is non-negotiable — generic content doesn't land; context is everything.
- Keep up or fall behind — LinkedIn's algorithm keeps shifting, so the tool has to keep learning.
09
Status
Live — a SaaS product, available at hintsay.com.