PH Survey Control DB

Kraisak Jorillo

About this app

PH Survey Control DB lets you quickly look up Philippine survey control points and convert coordinates in the field.

Map and lookup
• Browse control points on an interactive map of the Philippines.
• Filter by province, municipality, and monument ID.
• Tap a pin to view province, municipality, PRS zone, easting/northing, and latitude/longitude.

Offline-ready data
• Bundled control point database stored on-device with versioned refresh.
• Works without signal once installed.

Coordinate conversions
• Geographic ⇄ Grid (PRS92 PTM), with convergence and point scale.
• PRS92 ⇄ WGS84 latitude/longitude/height.
• Auto-detect or set PRS92 zone; shows results in decimal or DMS.

Lot Plotter
• Easy plotting of Lot using database control points

Input flexibility
• Toggle decimal and DMS entry for latitude/longitude.
• Numeric validation with helpful error prompts.
• Reset buttons to clear inputs fast.

Built for field crews
• Clean .NET MAUI interface optimized for phones and tablets.

What’s new

UX improvement and Database fix for special characters