# Theodolite HD vs Eos Tools Pro

Theodolite HD and Eos Tools Pro both sit at 4.7 stars, but that hides the real split: 91% of Theodolite HD's written reviews are positive against 38% of Eos Tools Pro's. Theodolite HD also leads on ratings volume (136 vs 9) and iOS requirement (15.6 vs 17.0). Eos Tools Pro's advantage is price (Free vs $8.99) and in-app purchases (none vs 8). On rating, ads and device support there is nothing between them.

Eos Tools Pro is free to download; Theodolite HD costs $8.99 up front. Theodolite HD sells 8 one-off in-app purchases. Eos Tools Pro asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Theodolite HD against 4.6 for Eos Tools Pro. That said, the two scores are not equally well evidenced: Theodolite HD has 136 ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 91% of Theodolite HD's written reviews are positive against 38% of Eos Tools Pro's.

Theodolite HD ships an update every 4 months, Eos Tools Pro every 2 months. The most recent releases landed on August 1, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Theodolite HD | Eos Tools Pro |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| Rating | **[4.7 (136 ratings)](https://appshunter.io/ios/app/theodolite-hd/id425456242/reviews)** | [4.6 (9 ratings)](https://appshunter.io/ios/app/eos-tools-pro/id961459993/reviews) |
| Number of ratings | **136** | 9 |
| Positive reviews | **91.1% of reviews** | 37.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 30 MB | 36 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [Craig Hunter](https://appshunter.io/developer/286743884) | [Eos Positioning Systems](https://appshunter.io/developer/945012224) |

## What reviewers say

### Theodolite HD

[App page](https://appshunter.io/ios/app/theodolite-hd/id425456242)

This app combines a compass, inclinometer, rangefinder, GPS, and map for augmented reality navigation. It allows users to capture data-overlay photos and videos, view positions on a map with offline options, and share location data with others. It's designed for professional use and outdoor activities.

**Highlights:** Augmented reality viewfinder, Compass and inclinometer, GPS and map with offline options, Data-overlay photo/video camera, Rangefinder and nav calculator, Location sharing and team tracking

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1,000 Outdoors Map Tiles | $0.99 | one-time |
| Team Tracking | $1.99 | one-time |
| World Datum Pack | $2.99 | one-time |
| US Mountain Summits AR Layer | $2.99 | one-time |
| 5,000 Outdoors Map Tiles | $4.99 | one-time |
| 10,000 Outdoors Map Tiles | $8.99 | one-time |
| 20,000 Outdoors Map Tiles | $17.99 | one-time |
| US State Plane Coordinates | $24.99 | one-time |

**What reviewers like**

- 🚀 Intuitive and easy to use
- 🔍 Accurate measurements and data
- 📷 Useful photo documentation features
- 🧭 Versatile for various applications
- 🏫 Great for educational and teaching purposes

**What reviewers complain about**

- 🔍 Occasional compass/sensor accuracy issues
- 💰 Expensive in-app purchases for maps and features
- 📱 Separate iPhone and iPad versions require double purchase
- 🔄 Lack of screen rotation support on some devices

**Reported bugs**

- Occasional crashes or freezes, especially on older devices
- Camera orientation issues on some devices

**Requested features**

- Add option to set elevation angle to 0 degrees horizontal
- Implement cross-device sync and data sharing
- Expand map coverage and reduce in-app purchase costs
- Add support for more camera features like video recording


### 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


## Frequently asked questions

### Is Theodolite HD free?

Theodolite HD costs $8.99, and also offers in-app purchases.

### Is Eos Tools Pro free?

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

### Which has better reviews, Theodolite HD or Eos Tools Pro?

Theodolite HD is rated higher. Theodolite HD averages 4.7 out of 5 from 136 ratings, while Eos Tools Pro averages 4.6 from 9 ratings.

### Do Theodolite HD or Eos Tools Pro have ads?

Neither Theodolite HD nor Eos Tools Pro shows ads.

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

Theodolite HD ships an update every 4 months, and Eos Tools Pro every 2 months. Most recently, Theodolite HD was updated on August 1, 2026 and Eos Tools Pro on September 18, 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.*