Digital tools and software projects for iOS, macOS, the web and teaching, from precise screenshot markup and private family records to time tracking, lesson planning and open teaching materials.
BetterBabyBook
Baby journal for iOS with separate child profiles, milestones, memories and PDF/ZIP export. Optional family sync encrypts selected content. Account and family metadata are kept separate from it.

Cycloputer
iPhone app with a cycling map, GPX routes, navigation and ride recording with elevation profiles. For now the map deliberately covers Switzerland only. Check routes and elevations independently. There is no guarantee that routes are safe for cycling.
Pixel Porter
Mirrors your iPhone photo library directly to your own WebDAV server (NAS, Nextcloud) and helps you review, edit and clean up. It is not an independent backup, so you still need your own backups.

Rapid Reminders
iPhone app for checklists with categories, tags and calendar subscriptions. The optional cloud sync is experimental. Do not use it for confidential or business-critical content. Alarms and availability are not guaranteed.
TimeTrackingTool
iPhone app for time tracking with projects, tags, a live timer, calendar import and CSV export. Data stays on the device. Check the times yourself before billing or reporting.

Vocab Vault
iPhone app for practising your own vocabulary with flashcards, quizzes, typed answers and cloze texts, optional on-device text capture and local storage. Content and grading may contain errors. Learning success is not guaranteed.
WeWeight
Personal weight log and self-chosen goals with optional Health import and CSV/GitHub export. Measurements, trends and goal bands are not a medical assessment or recommendation.
ScreenSnipStudio
A native macOS studio for precise screenshot annotation and visual communication: Bézier curves, flexible speech-bubble callouts, step counter badges, lossless pixelation masks for privacy, zoom loupes and GIF export.
FreeFlower
An open, LaTeX-based template and build system for typographically polished, version-controlled teaching and exam materials at Swiss upper secondary schools (Gymnasium).
IKT-Einführung
An interactive starting page for new students at Kantonsschule Stadelhofen, Dübendorf branch, with step-by-step guides for the first EduZH login, Wi-Fi, Microsoft 365 and BYOD basics. The guide is in German.
Unterrichtsplanung
Imports existing lessons from school calendar subscriptions. Plan topics, notes, exams, cancellations and substitutions directly on each lesson and save them, with an automatic feed back to your calendar.