Eos Tools Pro vs TrailTool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Eos Tools Pro
This utility app provides advanced GNSS information for high-precision receivers, crucial for GIS and surveying. It includes an NTRIP client for corrections, user-configurable alarms, and background operation with mapping software.
- Advanced GNSS information (RMS, PDOP, differential status)
- Built-in NTRIP client for RTK/DGNSS corrections
- User-configurable audible alarms
- Background operation with mapping software
- Satellite view for multiple constellations
- Orthometric Height and Position Shift computation
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Eos Tools Pro is a monitoring utility for the Arrow and Skadi series high precision GNSS receivers from Eos Positioning Systems. It provides advanced GNSS information such as RMS values, PDOP, differential status, satellites tracked and used, that are critical for submeter and centimeter GIS and surveying data collection. The app features a built-in end trip client to access RTK or DGNSS corrections from an RTK network. Eos Tools Pro also allows audible user configurable alarms and runs in the background of your mapping surveying software. Features: - Built-in NTRIP client to connect to an RTK Network - Displays GNSS and Tilt Compensation accuracy with quality control information - Select the Skadi Smart Handle mode: Extensible Virtual Range Pole™ or Invisible Range Pole™ - Satellite view for all constellations in use (GPS, GLONASS, BeiDou, QZSS and IRNSS) - User configurable alarms - Orthometric Height (Geoid models for vertical datum) - Compute and apply Position Shifts to accommodate different - Laser Offset Mapping for Esri ArcGIS® Field Maps - Locate and map underground utility assets directly in ArcGIS Field Maps - Terminal emulator to send configuration commands to the receiver - HTML5 built-in browser Disclaimer: "Continued use of Eos Tools Pro running in the background and connected to the GPS/GNSS receiver can dramatically decrease the battery life of your Apple device." Technical Support: For technical support, questions, feedback or bug reporting, please contact support@eos-gnss.com.
TrailTool
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TrailTool supports creating map from within the app from publicly available OpenStreetMap data. So wherever you plan for your next adventure, your map can always be up to date. It does not require wireless connection to work in the field or outdoor. It respects your privacy, any saved tracks or locations are always stored on device, no data is ever uploaded to the cloud. So your data is safe. ## Main Features - Record GPS tracks or mark point of interest on screen for trip planning or actual location while in the field - Create map dataset from OpenStreetMap data (PBF) directly. Support option to use native language (default) or English as place names or labels. - Support data exchange format: PBF, GeoJSON/JSON and GPX - Support data sharing via AirDrop or standard iOS share functionality for any data used within the app For device without GPS (such as iPad without cellular service), the app can be used for trip planning to review map, existing tracks, point of interests etc. Maps, tracks or point of interests from one device can be shared with other devices via AirDrop. ## Map Data The app comes with one sample map and one sample OpenStreetMap PBF file. For additional data, you can go to OpenStreetMap web site or within app, choose About -> Additional Data… Hope you’ll find this app useful in your travel or hiking adventure!
Screenshots
Verdict
The clearest difference is price: Eos Tools Pro at Free against TrailTool's $2.99. TrailTool's advantage is iOS requirement (14.0 vs 17.0). On update cadence, 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
Eos Tools Pro is free to download; TrailTool costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Eos Tools Pro ships an update every 2 months, TrailTool every 6 weeks. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.
| Parameter | Eos Tools Pro | TrailTool |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 4.6 (9 ratings) — better | — |
| Positive reviews | 37.5% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 36 MB | 40 MB |
| Age rating | 17+ | 4+ |
| Developer | Eos Positioning Systems | Zhiguang Han |
In-app purchases
Eos Tools Pro
No in-app purchases
TrailTool
No in-app purchases
Questions
Is Eos Tools Pro free?
Is TrailTool free?
Do Eos Tools Pro or TrailTool have ads?
Which is updated more often, Eos Tools Pro or TrailTool?
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