Comparison

iCMTGIS PRO vs RTKapp

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iCMTGIS PRO

This professional GPS/GIS mapping and data collection tool enables users to efficiently gather location-based information and perform stakeout tasks. It supports various coordinate systems and allows for custom feature databases, making it ideal for land management, surveying, and other field applications.

Highlights
  • GPS/GIS mapping and data collection
  • Stakeout functionality
  • Support for multiple coordinate systems
  • Customizable feature-attribute database
  • Import/export of various file formats
  • Attach photos to data points
  • Track recording
Features
Currently charting
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iCMTGIS PRO is a professional GPS/GIS mapping, data collection and stakeout app for use on the iPad and iPhone devices. It can be used to effectively collect data and increase productivity for utilities, wildlife, natural resources, land management, surveying, soil study, archaeology, drone control points and other land-based or air-borne GPS/GIS applications. LLA, UTM, State Plane and local coordinate systems supported. It also provides the ability to create a local NEZ coordinate system to use with real-world designs on paper. Requires iOS 9 or newer version of iOS. iCMTGIS PRO will work with any iOS compatible GPS devices. In addition, it is able to display the GPS status for a few specific external GPS receivers and record accuracy and quality information for the recorded position - e.g. EOS Arrow Gold, Geneq SXBlue Platinum, Juniper Systems Geod. When used with these GPS receivers, you will be able to set PDOP mask and RMS limit for quality assurance. iCMTGIS PRO can make use of the NGS Geoid12a binary files. It can be a valuable RTK data collection and stakeout tool when used with a compatible GPS receiver that outputs the needed accuracy information. iCMTGIS PRO will let you define a custom Feature-Attribute database to facilitate data collection. It will let you log GPS Points, Lines and Area Features and tag them with predefined or manually added descriptions. It will let you log multiple GPS fixes and automatically calculate the average position. It will let you record nested Points while recording a Line or Area Feature. It will also let you digitize Features on top of a background map or create traverse points by entering angles and distances. You may load a GeoTiff image to use as a static or moving background map. You can record your track while performing other tasks using this app. Enter deed calls to create a deed plot. View distances and areas on the spot. Create buffers. Create a grid over an area. Crate contour lines based on points with (x,y,z) coordinates. Attach photos. Easily import/export Shapefiles, Excel files, DXF files, KML files and text files, send/receive files via ftp or email, and store files in the Cloud. Generate and view PDF files. The app comes with a detailed built-in help document. Free relevant GPS/GIS training videos are provided on the Internet. iCMTGIS PRO provides Point Stakeout as well as Line Stakeout functionality to help you get to a specific Point or to move along a pre-defined Line or perimeter. iCMTGIS PRO is a one-time purchase without any annual subscription fees. It will run on iPad devices as well as iPhone devices. Please note: Location data depends on the GPS receiver used. Continued use of GPS running in the background can dramatically decrease battery life. iCMTGIS PRO will let you easily toggle the GPS on or off.

About

RTKapp

Features
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Welcome to RTKapp --------------------- Centimeter Precision in your Pocket RTKapp is the ultimate solution for surveyors, engineers, and GNSS enthusiasts who need professional workflows without the burden of desktop software. Connect, record, process, and analyze satellite data directly from your iPhone or iPad in a fast, private, and powerful way. Powered by the robust RTKLIB engine (Demo5), RTKapp allows you to execute RTK positioning, Post-Processing (PPK/PPP), and raw data conversion in seconds, wrapped in a modern, streamlined interface. REAL-TIME RTK ---------------- - Total Connectivity: Connect your GNSS receiver via Bluetooth (BLE) or TCP, or get network corrections through the built-in NTRIP Client. - Live Quality Metrics: Monitor your signal status in real-time with AR ratio, HRMS/VRMS, DOP, SNR (Signal-to-Noise Ratio), and Skyplot views. - VRS Support: Works seamlessly with Virtual Reference Stations by automatically sending your configured position (GGA) to the caster. - Transparent Recording: Natively capture and log raw data streams from the Rover, Base, and corrections simultaneously while you measure. INSTANT POST-PROCESSING ------------------------------ - Load your observation (Rover/Base) and navigation files on the fly. - Execute kinematic, static, or precise point positioning (PPP) with advanced algorithms. - Analytical Plotting: Dive deep with E/N/U position graphs, horizontal scatter plots, cycle slip detection, and post-fit phase residuals to ensure maximum survey-grade quality. FIELD PRO TOOLS ------------------- - RINEX Converter: Import binary logs from RTCM3 and export them to universal RINEX format with advanced versioning and frequency selections (L1/L2/L5). - NTRIP Caster Management: Browse sourcetables, save profiles for your favorite VRS networks, and even share data by forwarding corrections via Bluetooth. - Configuration Profiles: Save your processing settings, elevation masks, and ambiguity resolution parameters into custom profiles for instant field readiness. LOCAL PRIVACY FIRST ----------------------- Your data belongs to you. RTKapp processes all positioning locally right on your device. We do not rely on the cloud to calculate your position, we don't track your projects, and all exports to GPX, KML, CSV, or .pos coordinate files are performed purely on-demand. Master GNSS precision anywhere, no laptop required. Download RTKapp and streamline your data collection and processing today!

Screenshots

iCMTGIS PRO4 screens
RTKapp4 screens

Verdict

The call

The clearest difference is price: RTKapp at Free against iCMTGIS PRO's $299.99. RTKapp also leads on update cadence (every 3 weeks vs every 3 months). iCMTGIS PRO's advantage is chart position (#165 vs unranked) and iOS requirement (15.6 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

RTKapp is free to download; iCMTGIS PRO costs $299.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

iCMTGIS PRO ships an update every 3 months, RTKapp every 3 weeks. The most recent releases landed on October 8, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 7 level
iCMTGIS PRO versus RTKapp: the parameters behind the verdict, then further details
ParameteriCMTGIS PRORTKapp
Price$299.99Free — better
Rating4.9 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#165 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size15 MB93 MB
Age rating4+4+
DeveloperCORVALLIS MICROTECHNOLOGY, INC.Juan Carlos Lopez Calvo

In-app purchases

None

iCMTGIS PRO

No in-app purchases

None

RTKapp

No in-app purchases

Questions

Is iCMTGIS PRO free?
iCMTGIS PRO costs $299.99, with no in-app purchases.
Is RTKapp free?
RTKapp is free to download, with no in-app purchases.
Do iCMTGIS PRO or RTKapp have ads?
Neither iCMTGIS PRO nor RTKapp shows ads.
Which is updated more often, iCMTGIS PRO or RTKapp?
iCMTGIS PRO ships an update every 3 months, and RTKapp every 3 weeks. Most recently, iCMTGIS PRO was updated on October 8, 2026 and RTKapp on October 1, 2026.

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