# Geo Data Collector

> Offline GIS, GNSS & Survey

Canonical page: [https://chrome-stats.com/d/id1612014577](https://chrome-stats.com/d/id1612014577)

## Overview

- **ID:** `id1612014577`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Tech Maven GeoSpatial LLC
- **Category:** Navigation
- **Version:** 1.4.1
- **Last updated:** 2026-08-24
- **First published:** 2022-07-27
- **Size:** 116 MB
- **Data as of:** 2026-09-16
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/geo-data-collector/id1612014577)
- **Website:** [https://geodatacollector.techmaven.net](https://geodatacollector.techmaven.net/)
- **Privacy policy:** [https://portfolio.techmaven.net/privacy-policy/](https://portfolio.techmaven.net/privacy-policy/)

## Description

External GNSS and RTK workflows now support NTRIP/RTCM corrections, quality-gated capture, surveying tools, and construction layout job preparation.

Geo Data Collector turns your iPhone or iPad into an offline-first field GIS for mapping, asset inspection, structured data collection, surveying calculations, and construction layout job preparation.

FIELD DATA COLLECTION
• Capture points, lines, and polygons with attributes and photos.
• Build forms in the app or import shareable JSON form designs.
• Mark fields as required or optional and use text, number, date, checkbox, radio-button, and selection controls.
• Review, search, edit, delete, and return to collected features on the map.

EXTERNAL GNSS, RTK & NTRIP
• Connect a compatible Bluetooth GNSS receiver that outputs NMEA 0183.
• Stream validated RTCM 3 corrections from NTRIP v1/v2 RTN or CORS casters to the external rover.
• Monitor fix type, receiver-reported accuracy, DOP, satellite count, signal quality, correction age, and data freshness.
• Apply configurable quality gates, stable-fix checks, and ECEF/ENU point averaging before capture.
• Preserve observations, occupations, antenna information, quality decisions, and available coordinate-operation provenance in versioned archives.

The external receiver computes the RTK position solution. Achievable accuracy depends on the receiver, antenna, environment, correction service, configuration, and field procedures.

SURVEYING & GEODESY TOOLS
• Planar COGO inverse and forward calculations.
• WGS84 geodesic inverse and direct calculations.
• Polygon area, perimeter, orientation, and centroid.
• Slope distance, grade, inclination, and elevation difference.
• Stakeout deltas, Bowditch traverse adjustment, and angular-closure diagnostics.
• WGS84 ECEF/UTM operations, explicit control localization, and auditable geodesy reports.

CONSTRUCTION LAYOUT PREPARATION
• Create and manage layout jobs and design targets.
• Import targets from supported GeoJSON and CSV/ASCII point files.
• Configure metric, international-foot, or US-survey-foot units and horizontal/vertical tolerances.
• Build a 2D site localization from control pairs and review residual diagnostics.
• Export as-built CSV, stake-report JSON, and Markdown field reports.

OFFLINE MAPS & OPEN DATA
• Work with GeoPackage, GeoJSON, raster MBTiles, and vector MBTiles.
• Use online and offline basemaps, including vector, terrain/topographic, hillshade, satellite, and boundary layers where available.
• Browse searchable attribute tables and control layer styling, visibility, opacity, and display order.
• Convert supported vector formats, including zipped Shapefile, KML, GPX, CSV, and WKT, into app-ready data.

FIELD OPERATIONS
• Measure distance and area, record GPS tracks, search OpenStreetMap, save spatial bookmarks, and view coordinates in multiple formats.
• Use offline field projects, field editing workflows, and geodesy/control reports.
• Share files through supported cloud, FTP, WebDAV, and local Wi-Fi workflows.
• Connect TAK Server and Meshtastic workflows for team position and messaging.

Core collection and offline mapping do not require a proprietary server-side database. Some capabilities require compatible external hardware, network or correction services, imported data, or an in-app purchase.

Geo Data Collector is a field mapping and construction aid. It does not replace a licensed surveyor, legal boundary determination, instrument calibration, or required professional quality-control procedures.

## Rankings

- #1,555,202 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id1612014577)