Purifai
Available for Mac
A native macOS utility that cleans copied text from AI tools and websites. Removes unwanted formatting and spacing locally, without sending text to the cloud.
Software development, with a product focus.
An independent software and product development studio in Visby, Sweden. We combine thoughtful design and careful engineering to create focused digital products.
Selected products
A selection of software developed at Visby.dev, with a focus on usability, performance, and considered design.
Sealform
Available for iPhone and iPad
A puzzle game for iPhone and iPad, designed for thoughtful play and short, uninterrupted sessions.
A one-time purchase, with no tracking, no ads between levels, and no pressure to play every day.
Resolve
Coming soon
A new software product currently in development.
Coming soon
Our approach to product development
Good software starts with a clear purpose and a sound technical foundation.
We bring product thinking, design, and software development together to build products that are useful, responsive, and straightforward to use.
Usability, performance, and privacy guide the work at every stage.
Native by design
Software developed for its platform, with responsive interfaces and attention to performance.
Privacy by design
Collect only what a product needs, keep processing local where possible, and make data use clear.
Focused functionality
Start with a clear purpose. Keep workflows straightforward and remove unnecessary complexity.
Attention to detail
Careful design and engineering, from core functionality to the interactions people use every day.
An independent development studio
Built independently in Visby, Sweden.
Visby.dev is an independent software and product development studio founded by Jacob Johansson in Visby, Sweden.
The studio brings design and development together, from defining a product's purpose to building and refining the software behind it.
Each product starts with a clear need and develops through practical decisions about usability, performance, and privacy. The aim is software that works well and remains straightforward to use.