Manholer is a native Android app for utility and field work: record manholes, inlet boxes, and other structures. Document pipe directions and invert details. Capture simple measurements and notes per project. <b>Highlights</b> • Organize work by project (name, ID, job). • Structure-centric workflow: manholes, inlet grates, pipe directions. • Map view to see features in context. • Attach photos of the structure. • Export project data for reporting: PDF and CSV formats. <b>License</b> Open source under the GNU Affero General Public License v3 (AGPL-3.0). <b>Source code</b> https://git.evulid.cc/cyberes/manholer