G-01
Detailing with GPS
Record points by project, with optional automatic logging every 5 seconds. Share your measurements as Shapefile, KML or a text report by e-mail or message.
Geodetic calculation and GPS survey app
Measure in the field,
calculate in
your pocket.
Kocaman Pro uses your phone's GPS for detailing, stakeout and area calculation, opens your DXF and Shapefile drawings over satellite imagery, and brings classic surveying calculations and coordinate transformations together in one app. With ITRF96, ED50, WGS84 and more than 5,000 EPSG coordinate systems.
- CRS
- ITRF96 · TM3 · CM 30°
- Y (Easting)
- 531928.142
- X (Northing)
- 4513645.434
- Elevation
- 31.6 m
- Point
- P4
5 points in total
Project area 1,284.56 m²
- 5,000+ coordinate systems EPSG dataset, offline
- 4 GPS modules detailing, stakeout, area, project
- 14 calculation modules surveying and transformation
- 12 languages right-to-left for Arabic
01GPS modules
Turn your phone's GPS into field equipment.
During detailing, stakeout and area calculation, your device's live WGS84 position is converted instantly to the coordinate system you choose. Location accuracy is shown on every GPS screen with a green, orange and red indicator.
G-02
Stakeout with GPS
Get guided to a target coordinate by its easting and northing offsets and follow it on the map. Points recorded in the detailing and area modules go straight to stakeout.
G-03
Area Calculation with GPS
Walk the parcel corners to calculate the area in the field. Corner points are kept and can be sent to the stakeout module when needed.
G-04
Open Project with GPS
Open your DXF, Shapefile and KML/KMZ drawings at their true position over satellite imagery and follow them together with your location in the field. If the file has a PRJ, the coordinate system is detected automatically.
02Calculation modules
Your office calculations come along too.
From bearing and distance to simple curves, from area tolerance to 2D coordinate transformation: the spatial calculations you need in the field. Degrees, gradians and radians are supported as angle units.
-
H-01
Bearing and Distance
Bearing and horizontal distance from the coordinates of two points.
-
H-02
Angle and Distance
Horizontal angle and distance to a point from the station and backsight points.
-
H-03
Polar Stakeout
Polar angle and distance values for the points to be staked out.
-
H-04
Side Point
Coordinates of a new point from its chainage and perpendicular offset to a line.
-
H-05
Waypoints
Any number of intermediate points on the line between two points.
-
H-06
Chainage and Offset
Chainage and perpendicular offset of a point relative to a line.
-
H-07
Simple Curve
Tangent, arc and bisector lengths from the radius and deflection angle.
-
H-08
2D Coordinate Transformation
Similarity (Helmert) transformation from two common points: scale, rotation and translation.
-
H-09
Geographic ⇄ UTM 4 modules
Two-way conversion between WGS84 geographic, WGS84 UTM and ED50 UTM.
-
H-10
Area Tolerance
Checks the difference between the land-register and calculated area against the numerical or planimetric tolerance.
-
H-11
Degree Conversion
Conversion between degrees–minutes–seconds, decimal degrees, gradians and radians.
- Always improving See the release notes for new modules and improvements
03Coordinate systems
The right datum, the right zone.
The 3° and 6° zones of ITRF96 and ED50, the systems used in Türkiye, are built in for coordinate transformation. With the Global CRS option, more than 5,000 systems from the EPSG v12.054 dataset run on your device without sending data to a server. The EPSG code of the selected system is shown on the project and stakeout screens, and the app warns you about a zone (central meridian) mismatch.
- ITRF96 TM3 3° zone
- ED50 TM3 3° zone
- ITRF96 UTM6 6° zone
- ED50 UTM6 6° zone
- WGS84 Geographic latitude / longitude
- Global CRS EPSG v12.054 · 5,000+ systems
- Import
- CSVDXFShapefileKML/KMZ
- Export
- Shapefile (ZIP)KMLText report On iOS also CSV, DXF and KMZ
04Video
See the app at work.
The Android interface and the project-based workflow with the GPS modules.
05Blog
Latest news
Blog posts are in Turkish.
06FAQ
Frequently asked questions
Short answers about coordinate systems, GPS accuracy, file formats and device support. If your question is not answered here, write to iletisim@kocamanpro.com.
What is Kocaman Pro?
Kocaman Pro is a geodetic calculation and survey app for surveying engineers, survey technicians and field teams. It uses the phone's GPS for point detailing, stakeout and area calculation, and brings surveying calculations such as bearing and distance, polar stakeout, side point, simple curve, area tolerance and coordinate transformation together in one app.
Which coordinate systems are supported?
The 3° (TM3) and 6° (UTM) zones of the ITRF96 and ED50 datums used in Türkiye and WGS84 geographic coordinates are built in. With the Global CRS option you can search for and select more than 5,000 coordinate systems from the EPSG dataset. Calculations run on the device; your coordinates are not sent to a server.
How do coordinate transformations work?
The Geographic ⇄ UTM modules convert in both directions between WGS84 geographic, WGS84 UTM and ED50 UTM coordinates. If you have two points in common with a local system, the 2D Coordinate Transformation module calculates the scale, rotation and translation of a similarity (Helmert) transformation. In the GPS modules, the device's WGS84 position is converted to the selected system in real time.
How do I stake out with my phone's GPS?
In the Stakeout with GPS module, enter the target point's coordinates or pick it from a project. The app shows the easting and northing offsets from your position and guides you to the target on the map. Points recorded in the Detailing with GPS and Area Calculation with GPS modules can be sent straight to stakeout.
How accurate are measurements with a phone's GPS?
Results are limited by the accuracy of the WGS84 position your device receives from the satellites; a transformation cannot be more precise than its input. Phones and handheld GPS receivers do not deliver sub-metre accuracy, so Kocaman Pro is recommended for general positioning and field work; jobs that need centimetre-level accuracy call for a geodetic GNSS receiver. Live accuracy is shown on every GPS screen: green below 2 m, orange for 2–5 m and red above 5 m.
Which file formats can it open and export?
It imports CSV, DXF, Shapefile and KML/KMZ files. Measurements are exported as Shapefile (ZIP), KML and a text report; on iOS, CSV, DXF and KMZ are also supported. DXF, Shapefile and KML drawings open at their true position over satellite imagery, and if a Shapefile comes with a PRJ file, its coordinate system is detected automatically.
Which devices does it run on, and is it paid?
It is available for Android devices on Google Play, for iPhone and iPad on the App Store (iOS 17 or later) and for Huawei devices on AppGallery. Kocaman Pro is a paid app on the App Store and Google Play; see the store page for the current price.
Which languages does the app support?
It is available in 12 languages: Turkish, English, German, French, Spanish, Italian, Portuguese, Russian, Arabic, Japanese, Korean and Chinese. Arabic comes with a right-to-left interface.
Who develops Kocaman Pro?
All of the app's code is written by Hakan KOCAMAN, Surveying Engineer, and Ümit Tacettin AKGÖL, Computer Engineer. Kocaman Pro is a trademark registered with the Turkish Patent and Trademark Office and has been on the App Store since 2016. For questions and suggestions, write to iletisim@kocamanpro.com.
Get Kocaman Pro on your device.
For Android, iPhone, iPad and Huawei devices. Questions and suggestions: iletisim@kocamanpro.com