CruxCoach is an open-source Android application designed for climbers who use digital climbing boards. It consolidates support for seven different boards, including Kilter Board, MoonBoard, Tension Board, Grasshopper, Decoy, So iLL, and Touchstone Aurora, offering a single platform to browse climbs, light up holds, and log climbing sessions. The app allows users to access the catalogues of these boards, with over 496,000 climbs available for browsing. Climbers can filter climbs by criteria such as grade, angle, quality, move count, and setter. Once the board database is synced, all browsing and filtering features work offline. CruxCoach enables Bluetooth hold-lighting, allowing users to light up holds on supported boards directly from their device. The app supports custom hold colors for different roles, such as start, hand, foot, and top positions. In addition to browsing and lighting up existing climbs, users can create and set their own problems on any of the seven boards. These user-created climbs can be published to the CruxCoach community using Nostr, a protocol that avoids centralized servers and gatekeepers. For session tracking, CruxCoach provides an encrypted local logbook. This feature allows users to record sends, attempts, and opinions about their climbs, with all data stored on the device. The app does not require an account, does not use Google services, and does not track user activity, emphasizing privacy and local data control. The user interface is available in both English and German. CruxCoach is available for free download as a verifiable, signed APK for devices running Android 8.0 and above. It can also be installed via Zapstore. The app’s open-source nature allows for community contributions and transparency in development. Location-only layers for Aurora and 12 Climb are also included in the board map, though climb interaction is not specified for these boards. CruxCoach is positioned as a comprehensive tool for climbers seeking a private, unified solution for managing digital climbing board sessions across multiple platforms.
CruxCoach is a Health & fitness product. Managing, logging, and interacting with multiple digital climbing boards in one privacy-focused app. It is built as an open-source project for indoor climbers and training enthusiasts. The product is available for free. It runs on the web and Android, and it can be self-hosted.
CruxCoach first shipped in 2026. Development happens publicly on GitHub with 7 commits in the last 90 days. PulseGate's similarity index finds few close equivalents — CruxCoach occupies a relatively distinct niche. Key capabilities include board catalogue, bluetooth hold lighting, and offline mode. The interface is available in German and English.
Latest indexed changes and source events
Cruxcoach – Manage many climbing boards privatly in one app discovered by the PulseGate indexer
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