jk-apps.de — Janos Koschwitz

I build small, focused tools that do one thing excellently — no cloud requirements, no tracking, no bloat. SetRepGo iOS & Web Apps for Efficient Workflow

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SetRepGo

Fast, private workout tracker for iPhone & Apple Watch

Free-text logging · Progressive Overload · 100 % local & offline · no account & cloud. SetRepGo recognizes an entered set and instantly provides the context of the last session.

Current applications in development or already available.

Projects

Current applications in development or already available.

ergaenzungstraining

DACH meta-platform for supplementary training & performance diagnostics

Interactive app and web test: data-driven tests (e.g. for sports clubs), result sharing via link + QR, team usage.

Projects →

horrorscope

Daily horror draw as epic fantasy aesthetic

Deterministic daily output (Zodiac + Date), dark fantasy design, sharing including Instagram Story export. iOS & Web.

Projects →

teamping

App-less appointment organization via messenger

1-click RSVP via Telegram / WhatsApp, dynamic iCal feed, 24h automatic reminder. For amateur teams, without their own chat and without a paywall.

Projects →