Trail Explorer by CTRMA3.5 - App Store

Take a walk like no other...
The Trail Explorer by CTRMA app brings imagination to life by letting you explore the Central Texas Regional Mobility Authority’s 45SW and 183 Trails through voice narration in both English and Spanish and interactive augmented reality animations. Get ready to open the door to possibility!

Trail Explorer by CTRMA provides a captivating and educational experience for all ages. Use this free app to enhance your journey along our trails. Learn about the history, native plants and animals of the Texas Hill Country, and the people, history and culture of Austin’s East Side.

On the 45SW Trail, you can watch as prehistoric sea creatures animate in life-size form right before your eyes, witness the majesty of a towering Live Oak Tree as it grows from the ground up or take a deeper look at the caves below the surface in Central Texas.

On the 183 Trail, you can watch a Tejano band play a personal concert, unlock a life-size hidden local Austin mural, or enter a portal to the Montopolis Truss Bridge in the late 1930’s.

You won’t want to miss this one-of-a-kind trail adventure! Download the app today. Make sure to allow notifications and enable location services to utilize the app’s GPS component for a comprehensive trail experience.

Key Features
Augmented Reality: Animations bring you up close to unique experiences.

Narration: Learn interesting facts and historic information with this narrated guide offered in both English and Spanish. Closed captioning available on the 183 Trail.

GPS Guidance: Always know where you are on the trail, and identify nearby augmented reality experiences.

Photo and Social Sharing Capability: Want to take a picture of a Mosasaur or a Texas-horned Lizard or journey through a portal to the 1930s? This app offers the ability to capture our jaw-dropping. augmented reality experience with your phone’s camera. Your friends won’t believe their eyes when you share what you’re seeing on this spectacular journey.

Version History Improve performance. 3.5 Mar 2 The performance has been improved. Age Rating Update Jan 26 Updated performance and reduced app size for improved user experience. 3.3 08/28/2025 Updated the map SDK, resolved map-related issues, and enhanced overall experience smoothness. 3.2 06/03/2025 Location pins are added to enhance the user experience. 3.1 03/02/2025 Explore even more with the new 183A Trail! In this version, discover the rich history of Texas through exciting augmented reality experiences Expand your adventure today! 3.0 01/23/2025 - The visuals for augmented reality objects have been enhanced to improve visibility.
- Rotation fix for some models while displaying in AR.
- Audio playing fix for some Spanish voiceovers 2.2 02/02/2024 -Update for the iOS 17 support
-UI bug fixes in the app
-Audio player UI fixes
-Updated and improved surface tracking 2.1 10/25/2023 - Text overlay issue fix
- Video overlay sizing fix 2.0.1 05/01/2023 The latest version of Trail Explorer by CTRMA adds an entirely new trail system to the app! Now including content for the 183 South walking trail. This updated version includes:
-Eight new interactive AR experiences + a secret bonus!
-An updated map including the new trail.
-Spanish and English closed captioning.
-Bugs fixes and updates to cover the latest versions of iOS systems.
-And more! 2.0 03/01/2023 Audio Playing Fixes and UI. fixes 1.4 06/22/2022 Updated Spanish Voice Overs.
Bug Fixes 1.3 05/28/2020 - Image Target Improved
- Voiceover fixes
- Perfomance bug fixes 1.2 01/20/2020 -UI Bug fixes
-Animation issue fixes
-Map loading fixes 1.1 12/13/2019 1.0 12/10/2019