December 2025: Delivered extensive localization improvements across OsmAnd and OsmAnd-iOS, strengthening accessibility and expanding the user base in Chinese-speaking markets. Key outcomes include complete Traditional Chinese localization for OsmAnd with full string coverage (initially 5161 strings at 100% and later expanded to 5695 strings), Indonesian localization refinement achieving 97.9% coverage (5053/5161), and Cantonese localization expansion reaching near-100% coverage across UI, POI phrases, and Telegram strings (5129/5161; Telegram segment 3/277). OsmAnd-iOS saw Traditional Chinese localization updates at 98.4% coverage (3823/3885). These efforts were enabled by Weblate-driven workflows and cross‑platform collaboration, reducing localization gaps, improving UX for non-English users, and positioning the product for broader international adoption. No major bug fixes are documented for this period; the focus was on localization polish, QA, and workflow improvements. Technologies/skills demonstrated include Weblate-based translation workflows, i18n/l10n best practices, cross‑repo coordination across Android and iOS, and Telegram integration context.