Available now
VBClubScore
Keep score for club volleyball games from Apple Watch, with quick access to match scoring while the action keeps moving.
Apps for Apple Watch and iPhone
Simple tools and games built by Portumnus Software.
Portumnus Software creates focused apps for quick, useful moments: scoring a volleyball match, converting units from your wrist, practicing with math flashcards, and playing compact word puzzles.
Current and upcoming apps
Four small apps, each with a clear job.
VBClubScore, Unit Converter Watch, and TiltCards are live on the App Store. FiveLetters is being prepared for release.
Available now
Unit Converter Watch
Convert common units directly on Apple Watch when you need a quick answer without reaching for another device.
Available now
TiltCards
Practice math, missing-number, and fraction cards by tilting the device to move between questions and answers.
Coming soon
FiveLetters
Find words from a compact set of letters, build your score, and keep pushing into the next level.
App Store link coming after release.
Privacy notice
Portumnus Software does not collect personal data.
Last updated May 18, 2026. This notice applies to Portumnus Software apps and this website.
- No personal data collection. Portumnus Software apps do not collect, transmit, sell, or share personal information.
- No tracking. The apps do not use third-party advertising, third-party analytics, or cross-app tracking.
- On-device use. Information entered while using an app stays on your device unless a future app release clearly adds an Apple system feature that you choose to use.
- Website privacy. This one-page website does not set cookies, run analytics, or include third-party tracking scripts.
- Contact. For app support or privacy questions, email info@portumnus.com.
- Future updates. If an app adds features that require data collection, this privacy notice will be updated before that version is released.