One-time purchase price to be announced before launch. Without a license, the software works with basic features indefinitely but exports carry a watermark.
Free: $0/month (100 sessions per month, 2 live prototypes, 30 days history); Solo: $12/month with 12-month commitment ($14 standard monthly, $12 annually saves $24/year, 500 sessions per month, 5 live prototypes, 3 months history); Pro: $24/month with 12-month commitment ($29 standard monthly, $24 a
Key features
Supports Windows, macOS and Linux
Accepts Word and Markdown manuscripts
Generates print-ready PDF for KDP and IngramSpark
Creates EPUB 3 for ebook stores
Automatic layout of running heads and chapter openers
Professional typography with correct quotation marks and dashes
German language typography support
Works offline without requiring an account
Custom theme saving in licensed version
Flow: visualize user paths screen by screen
Heatmaps: see where users click on every screen
Sessions: detailed user journey records
Target paths: track conversion through key steps
A/B testing: split users between two prototype versions
Compare: side-by-side analysis of versions or audiences
Audiences: segment sessions by link source or QR codes
Figma plugin: one-click publishing from Figma
What makes it different
Runs natively on Windows, macOS and Linux while the best-known alternative only runs on Mac
Professional typography handling for both English and German
Offline desktop app with no account or cloud dependency required
One-time purchase model instead of subscription
Includes free tools for KDP formatting and quote/dash fixing
No code required from users: open link and use prototype as usual
Privacy-focused: no names, emails or IP addresses stored
All features available in every plan, including free
Instant publishing: frozen prototype version goes live immediately