Bias Lab
Compare illustrative forehand and backhand arcs across short, medium and long visual lengths. The diagrams are conversation aids, never a prediction of a real bowl, person or green.
Enter the instrumentCambridge · New Zealand
Explore line, length, bias, practice ends and rink courtesy through a private Android fieldbook.

A fieldbook, not a feed
Rink & Radius helps an adult form a clearer real-world observation. It has no public profile, chat, followers, streak pressure, ranking or remote engagement loop. Temporary tools reset locally; only accessibility choices and optional lesson bookmarks may remain on the device.
Compare illustrative forehand and backhand arcs across short, medium and long visual lengths. The diagrams are conversation aids, never a prediction of a real bowl, person or green.
Enter the instrumentCombine four fixed choices into a temporary practice sequence with setup, steps, observation, variation and reset. It creates no booking, draw, roster or official coaching plan.
See the methodMove anonymous bowl tokens and a jack to discuss lanes and consequences without recording names, scores, teams, matches or official counts.
Read the sandboxForty substantial illustrated lessons cover foundation, line, length, bias, a shot library, head reading and adult club-day preparation.
Browse the districtsA private session checklist keeps arrival, equipment, shared space, newcomer welcome and closure visible while leaving live information to current club sources.
Prepare thoughtfullyThe exact Android build has no Internet permission, account, advertising, analytics, upload, cloud sync or sensitive Android permission. The complete policy contains eighteen sections.
Read the policy
Read from the jack outward
Head Mapper and Green Notes deliberately use anonymous shapes and fixed, neutral language. They invite questions such as “What remains open?” and “What changes after contact?” without turning practice into a player database or pretending to determine a count.
The app does not replace a measure, a current law source, an event official, a coach or the people responsible for the venue.
Review authority and safety boundariesResponsible organization
Public club and Bowls New Zealand sources identify Cambridge Bowling Club at 37 Thornton Road, Cambridge 3434, under Bowls Waikato. The app support policy is specific to Rink & Radius and is separate from general club operations, membership records, websites and external services.
About the app and publisherLocal by design
Rink & Radius version 1.0.0 packages its lessons, illustrations, temporary instruments, source notes and privacy text inside the Android application. It has no Internet permission, account, cloud database, advertising, analytics, attribution or remote configuration. A lesson bookmark or reading preference may remain in app-private storage; an End Composer result, Head Mapper layout, Green Notes strip and Club Day selection are intended only for the running session. Clear Local Choices, Android Clear storage or uninstall removes app-held state.
Authority remains human
The product cannot confirm a session, forecast, surface, access route, equipment, law, condition of play, score, selection, eligibility decision or participant readiness. Current club staff, adult session leaders, coaches, event officials, posted venue instructions, qualified professionals and emergency services take priority. The app supports a calmer conversation; it does not silently turn that conversation into an operational instruction, official record, medical assessment or emergency report.
Publication boundary
This static site explains the app and hosts its app-specific policy after deployment. A ZIP stored on a computer is not yet a public privacy URL. The publisher must upload the package, verify the final HTTPS homepage and both privacy routes, confirm control of the published support contact, review current Play declarations against the exact AAB and retain appropriate rights evidence for supplied or generated imagery.