slack-ova-mobile
Slackline.Ova
Offline-first slackline companion for Android. Map, safety, gear and training — no signal required.
What it is
Slackline.Ova is a mobile companion for slackliners in the field — the places where phone signal usually is not. It started as an offline map for the Czech Republic (Sl.Ova, Ostrava scene) and grew into a multi-source aggregator with safety reference, gear tracking and curated training material.
Complementary to Slackmap and ISA — a national and regional mobile-offline layer, not a competitor. Slackmap stays the source of truth for global line submissions; local information belongs on a local platform.
Features
Map
- Every public line from slack.cz, slackmap.com and SlackData bundled inside the app.
- Anchors, lengths, heights, descriptions, parking.
- Full-screen map with a bottom sheet list — drag to resize.
- Bounds-driven filtering — the list updates as you pan.
- Marker color by type — highlines stand out, others are muted.
- Sort by distance from you or by any column.
- Inline detail on tap — anchors, description, source link.
- One Navigate button per line — Android picker (Mapy.cz, Google Maps, Sygic, Locus, Waze — whatever you have installed).
- Map styles: OSM (default), Mapy.cz satellite, Mapy.cz terrain.
- Czech / English / Polish UI. Dark and light theme follow the system.
ISA Safety Companion
Offline reference cards and calculators citing ISA:21, ISA:37, ISA:41 and related standards — a pocket reference for people who already know what they’re doing. Not a replacement for training or ISA certification.
Rig Log — in development
Per-line safety check and a full rig record. Photo-documented anchors, weather, tension, incidents, and lead rigger identity.
Gear — in development
Material catalog (webbings, weblocks, connectors, harnesses) with ISA warnings and recalls from SlackData. Your own inventory with usage history and RLT (recommended lifetime) tracking.
Training — planned
Curated external educational resources — postures, techniques, knots. Not safety-critical rigging — personal-growth material for slackliners at every level.
Privacy
We do not collect any personal data. No accounts, no tracking, no ads, no analytics. GPS only shows your position on the map — it is never transmitted anywhere. Full details: Privacy Policy.
Download
Google Play — Slackline.Ova — the primary distribution channel.
iOS: not yet. Planned via EAS Build and TestFlight.
Open source
Apache 2.0. Code, issues, releases and roadmap: github.com/zemanektomas/slack-ova-mobile
Support the project
buymeacoffee.com/slacklineova — covers store fees so the app stays free and open source.
Attribution
- slack.cz — Czech slackline community (slack.cz).
- Slackmap — International Slackline Association (slackmap.com), data CC BY-SA 4.0.
- SlackData — International Slackline Association (slackdata.org), data CC BY-SA 4.0.
- Mapy.cz — Seznam.cz a.s., basemaps © OpenStreetMap contributors.
- OpenStreetMap — © OSM contributors, ODbL.
Built by Tomáš Zemánek in Ostrava, Czech Republic. For slackliners, by slackliners.