Comparison

Trail Explorer by CTRMA vs iNaturalist

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Trail Explorer by CTRMA

Explore local trails with interactive augmented reality animations and voice narration in English and Spanish. Discover the history, native flora and fauna, and culture of the Texas Hill Country and Austin's East Side through engaging, educational experiences.

Highlights
  • Augmented Reality animations
  • Voice narration (English/Spanish)
  • GPS guidance
  • Photo and social sharing
  • Educational content on local history and nature
Features
Read full description

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.

About

iNaturalist

Identify plants, animals, and fungi using your camera or imported photos. Get AI-powered species suggestions and connect with a global community of nature enthusiasts to learn more about the natural world and contribute to scientific conservation efforts.

Highlights
  • AI species identification
  • Record species observations
  • Contribute to scientific data
  • Explore biodiversity
  • Connect with nature enthusiasts
Currently charting
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Your photos of plants, animals, fungi, and more can help protect nature all around the world. iNaturalist is free, nonprofit, and community-powered. iNaturalist helps millions of people learn about and document the nature around them. Point your camera at plants, animals, and fungi to get instant identification suggestions, then share your photos or sound recordings as an "observation." Then, see your observation get reviewed by a global community of knowledgeable nature-lovers to turn it into a useful data point for science and conservation efforts. Your everyday moments of curiosity can directly contribute to protecting nature, and you don't need any previous experience or knowledge to get started. iNaturalist is a mission-driven nonprofit dedicated to connecting people to nature and advancing biodiversity science and conservation, and is freely available thanks to the generous support of our community. KEY FEATURES • Identify species from anywhere in the world • Contribute to science by sharing your observations • Keep a record of species you see • Explore and protect biodiversity • Connect with and learn from other nature enthusiasts

Screenshots

Trail Explorer by CTRMA4 screens
iNaturalist4 screens

Verdict

The call

The clearest difference is rating: Trail Explorer by CTRMA at 4.8 against iNaturalist's 4.1. iNaturalist's advantage is update cadence (fortnightly vs every 3 months) and ratings volume (714 vs 6). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Trail Explorer by CTRMA holds the better App Store score, 4.8 against 4.1. That said, the two scores are not equally well evidenced: iNaturalist has 714 ratings behind it against 6, so its average is the more settled of the two.

UpkeepUpdate frequency

Trail Explorer by CTRMA ships an update every 3 months, iNaturalist fortnightly. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard4 real differences · 7 level
Trail Explorer by CTRMA versus iNaturalist: the parameters behind the verdict, then further details
ParameterTrail Explorer by CTRMAiNaturalist
PriceFreeFree
Rating4.8 (6 ratings) — better4.1 (714 ratings)
Positive reviews—48.6% of reviews
Number of ratings6714 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank—#79 — better
DevicesiPhoneiPhone, iPod — better
Requires iOS16.615.1 — better
Further details — not scored
Size412 MB220 MB
Age rating4+4+
DeveloperChocolate Milk & DonutsiNaturalist

Customer experience

Trail Explorer by CTRMA

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

iNaturalist

All ratings707 ratings
Positive72.7%
Neutral8.8%
Negative18.5%
Written reviews451 reviews
Positive48.6%
Neutral15.3%
Negative36.1%

Bugs and requests

Trail Explorer by CTRMA

Not enough reviews yet to summarise bugs or requests.

iNaturalist

Reported bugs

5 issues
  • App freezes when suggesting IDs on audio clips
  • Inconsistent tap responsiveness in search menu
  • Observation time not accurately filling based on upload time
  • Map showing incorrect observation locations
  • Crashes and performance issues on some devices

Requested features

5 requests
  • Ability to type in address/coordinates for location
  • Option to add observations to projects during upload
  • Batch editing/uploading of observations
  • More precise search filters (e.g. aquatic, parasitic, migratory)
  • Bring back colored observation markers on map

In-app purchases

None

Trail Explorer by CTRMA

No in-app purchases

None

iNaturalist

No in-app purchases

Questions

Is Trail Explorer by CTRMA free?
Trail Explorer by CTRMA is free to download, with no in-app purchases.
Is iNaturalist free?
iNaturalist is free to download, with no in-app purchases.
Which has better reviews, Trail Explorer by CTRMA or iNaturalist?
Trail Explorer by CTRMA is rated higher. Trail Explorer by CTRMA averages 4.8 out of 5 from 6 ratings, while iNaturalist averages 4.1 from 714 ratings.
Do Trail Explorer by CTRMA or iNaturalist have ads?
Neither Trail Explorer by CTRMA nor iNaturalist shows ads.
Which is updated more often, Trail Explorer by CTRMA or iNaturalist?
Trail Explorer by CTRMA ships an update every 3 months, and iNaturalist fortnightly. Most recently, Trail Explorer by CTRMA was updated on October 26, 2026 and iNaturalist on October 27, 2026.

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