# Geodetic Compass

> Location sharing and coordinate conversion tool with Taiwan emergency contacts. (iPhone/iPad app by Fontech.)

- Source: https://appshunter.io/ios/app/geodetic-compass/id1510306428 (this page in markdown: same URL + `.md`)
- Developer: [Fontech](https://appshunter.io/developer/878525010)
- Category: Utilities, Travel
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 22 MB
- Languages: American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2020-08-08
- Data updated: 2026-09-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/geodetic-compass/id1510306428/reviews.md

## What is Geodetic Compass?

Super fast to send or share location:

1. Open compass app
2. Check satellite signal strength at bottom left corner and then press send button.
3. Fill in custom text or SOS form.
4. Send!

After installation, two launch icons will be shown in your apps.

1. The compass acquires your location in real time. Then you can share your location by SMS or by other apps. A built-in phone book of fire departments will be shown if your current location was considered to be in Taiwan. These phone numbers were integrated with Taiwan's 911 system to receive SOS message from SMS.

2. Coordinate conversion tool supports several common coordinate formats in Taiwan. It also supports Taipower geocoding, which was marked on most utility poles in Taiwan.

NOTE!! No warranty about the accuracy of compass and positioning. Please be aware that this app is not intended for critical or high accurate measurements.

Please support Leave-No-Trace policy and help protect our mother nature together!

## Key features

- Real-time location sharing
- Share location via SMS/other apps
- Coordinate conversion tool
- Taipower geocoding support
- Taiwan emergency phone book
- SOS message integration

## Recent user reviews (8 of 8)

All indexed reviews: https://appshunter.io/ios/app/geodetic-compass/id1510306428/reviews.md

### 5/5 — 戶外必備工具

*2026-06-25, version 3.0.3*

新增座標轉換功能很實用

### 3/5 — 安卓也有這個app，但是iOS版的功能少太多了，還不能轉換97座標

*2022-05-24, version 1.2*

安卓也有這個app，但是iOS版的功能少太多了，還不能轉換97座標

### 5/5 — 功能很強

*2021-04-18, version 1.2*

功能很強，希望有97，以利消防隊搜救。

### 5/5 — TWD97

*2020-12-13, version 1.2*

希望能推出類似Android版的TWD97座標轉換app，對工作上非常實用。

### 5/5 — 終於出了 可是....

*2020-12-02, version 1.2*

什麼時候會有97座標

### 5/5 — 感謝iOS系統也有

*2020-11-16, version 1.2*

非常感謝iOS系統也有😊😄😄，謝謝作者

### 5/5 — iOS14更新

*2020-10-18, version 1.2*

終於等到更新了，給五顆星推推！

### 4/5 — 更新到ios14無法開啟app

*2020-09-30, version 1.0*

前一週更新到最新的ios14.0.1版本即無法開啟程式。請研發團隊留意次問題。

## Frequently asked questions about Geodetic Compass

### Does Geodetic Compass have ads?

No, Geodetic Compass does not contain advertisements. It is a free application with no ads.

### What devices is Geodetic Compass compatible with?

Geodetic Compass is available for iPhone and iPod devices. It is not currently listed for Android or other platforms.

### How often is Geodetic Compass updated?

The latest version, 3.0.3, was last updated on May 31, 2026. This indicates a history of updates, though the exact frequency is not specified.

### What is the age rating for Geodetic Compass?

Geodetic Compass has an age rating of 4+. This suggests it is suitable for a wide range of users, including children.

### Can Geodetic Compass be used for precise measurements?

The app explicitly states there is no warranty about the accuracy of the compass and positioning. It is not intended for critical or high-accuracy measurements.

### What coordinate formats does Geodetic Compass support?

Geodetic Compass supports several common coordinate formats used in Taiwan, including Taipower geocoding which is marked on utility poles.

### What happens if my location is in Taiwan when I send an SOS?

If your current location is considered to be in Taiwan, a built-in phone book of fire departments will be displayed. These numbers are integrated with Taiwan's 911 system to receive SOS messages via SMS.

### Is Geodetic Compass free to download and use?

Yes, Geodetic Compass is available for free. There are no in-app purchases or subscription fees associated with its use.

## Version history (last 5 releases)

### 3.0.4 — 2026-08-24

This build fixes an issue where the compass occasionally showed a false "magnetometer missing" error at launch on iPhone.

### 3.0.3 — 2026-05-31

1. Added azimuth reading badge on the top of compass.  
2. Added coordinate conversion feature for many formats including TWD67/97 TM2 (119 and 121 central meridian), Taipei grid coordinates, and others.
3. Added map view also as the fallback when the magnetometer is not available.
4. Added more settings for fine-tuning and calibration.
5. Corrected the outdated phone numbers of Taipei City and Lienjiang County fire departments.
6. Added "About" in settings.

### 3.0.2 — 2026-05-28

1. Added azimuth reading badge on the top of compass.  
2. Added coordinate conversion feature for many formats including TWD67/97 TM2 (119 and 121 central meridian), Taipei grid coordinates, and others.
3. Added map view also as the fallback when the magnetometer is not available.
4. Added more settings for fine-tuning and calibration.
5. Corrected the outdated phone numbers of Taipei City and Lienjiang County fire departments.
6. Added "About" in settings.

### 3.0.1 — 2026-05-27

1. Added azimuth reading badge on the top of compass.  
2. Added coordinate conversion feature for many formats including TWD67/97 TM2 (119 and 121 central meridian), Taipei grid coordinates, and others.
3. Added map view also as the fallback when the magnetometer is not available.
4. Added more settings for fine-tuning and calibration.
5. Corrected the outdated phone numbers of Taipei City and Lienjiang County fire departments.
6. Added "About" in settings.

### 3.0 — 2026-05-26

1. Added azimuth reading badge on the top of compass.  
2. Added coordinate conversion feature for many formats including TWD67/97 TM2 (119 and 121 central meridian), Taipei grid coordinates, and others.
3. Added map view also as the fallback when the magnetometer is not available.
4. Added more settings for fine-tuning and calibration.
5. Corrected the outdated phone numbers of Taipei City and Lienjiang County fire departments.
6. Added "About" in settings.

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## More apps by Fontech

- [PHPCON OKINAWA 2019](https://appshunter.io/ios/app/phpcon-okinawa-2019/id1482376979)

All apps by Fontech: https://appshunter.io/developer/878525010

## Related topics

[geodetic compass](https://appshunter.io/ios/topics/geodetic-compass)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-10.*