# Eos Tools Pro vs TrailTool

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.

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.

## The numbers

| Metric | Eos Tools Pro | TrailTool |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.6 (9 ratings)](https://appshunter.io/ios/app/eos-tools-pro/id961459993/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 36 MB | 40 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Eos Positioning Systems](https://appshunter.io/developer/945012224) | [Zhiguang Han](https://appshunter.io/developer/994428398) |

## What reviewers say

### Eos Tools Pro

[App page](https://appshunter.io/ios/app/eos-tools-pro/id961459993)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none


### TrailTool

[App page](https://appshunter.io/ios/app/trailtool/id1257415655)

**In-app purchases:** none


## Frequently asked questions

### Is Eos Tools Pro free?

Eos Tools Pro is free to download, with no in-app purchases.

### Is TrailTool free?

TrailTool costs $2.99, with no in-app purchases.

### Do Eos Tools Pro or TrailTool have ads?

Neither Eos Tools Pro nor TrailTool shows ads.

### Which is updated more often, Eos Tools Pro or TrailTool?

Eos Tools Pro ships an update every 2 months, and TrailTool every 6 weeks. Most recently, Eos Tools Pro was updated on September 18, 2026 and TrailTool on September 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*