Four apps. One low-cost Pro subscription.

Get ad-free use across Docryva, Trim Forge, Echo Beam, and NtfyMe with one shared Derksen.app Pro subscription.

See what is included

Derksen.app Pro

Install any Derksen.app app, choose Pro, and the same subscription covers the full bundle.

  • Ad-free access across all four apps
  • One shared subscription instead of separate subscriptions
  • Try the apps first, upgrade when Pro makes sense

Docryva

A practical document scanner for turning paper into PDFs.

  • Capture paper pages with a focused scanning flow
  • Review, organize, and export saved documents
  • Optionally use iOS iCloud sync and backup
  • Useful for receipts, letters, forms, and personal archives
Open Docryva

Trim Forge

A fast video trimming tool for cutting long recordings down to useful clips.

  • Manage local trimming projects
  • Preview selected ranges before export
  • Export focused clips losslessly
  • Ideal for long drone camera footage
  • Designed for quick cuts from longer recordings
Open Trim Forge

Echo Beam

A laser puzzle game built around planning, memory, and clean puzzle rules.

  • Reflect beams with mirrors and directional elements
  • Use teleports, collectibles, and custom levels
  • Play rounds designed for deliberate problem solving
  • Download additional levels as new packs become available
Open Echo Beam

NtfyMe

A notification utility for sending secure personal alerts from your own tools.

  • Send push notifications from scripts and automations
  • Use examples for curl, Node, Python, Go, and PHP
  • Connect backend services to personal alerts
  • Send text alerts or image-based notifications
  • Use filters to control which notifications get through
Open NtfyMe