# Trex AR vs WhoPoo

The clearest difference is rating: Trex AR at 3.9 against WhoPoo's 2.9. Trex AR also leads on ratings volume (722 vs 8). WhoPoo's advantage is review sentiment (33% vs 6%) and monetization model (free vs free with in-app purchases). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Trex AR holds the better App Store score, 3.9 against 2.9. That said, the two scores are not equally well evidenced: Trex AR has 722 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 6% of Trex AR's written reviews are positive against 33% of WhoPoo's, so the app with the better star average is not the one people write more warmly about.

Trex AR ships an update every 4 months, WhoPoo every 2 months. The most recent releases landed on October 20, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Trex AR | WhoPoo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (722 ratings)](https://appshunter.io/ios/app/trex-ar/id1561806489/reviews)** | [2.9 (8 ratings)](https://appshunter.io/ios/app/whopoo/id1562200973/reviews) |
| Number of ratings | **722** | 8 |
| Positive reviews | 5.7% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 536 MB | 46 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Trex Co, Inc](https://appshunter.io/developer/1496171022) | [Sass Law LLC](https://appshunter.io/developer/1562200976) |

## What reviewers say

### Trex AR

[App page](https://appshunter.io/ios/app/trex-ar/id1561806489)

Visualize outdoor living spaces with this augmented reality tool. Explore different decking and railing options in your own environment. Design basic deck shapes, estimate square footage, and find local professionals.

**Highlights:** AR visualization of decking and railing, View entire decking portfolio, Experiment with railing pairings, Build basic deck shapes, Estimate square footage, Order samples, Find builders and retailers

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Great visual effects
- 👍 Handy and easy to use

**What reviewers complain about**

- 🐛 Freezes upon opening
- 🐛 Glitchy and buggy
- 👎 Not user-friendly
- 👎 Difficult to use
- 👎 Unclear how to proceed

**Reported bugs**

- Camera function doesn't work
- Can't save or restart scans
- Deck placement and sizing issues
- Crashes and freezes frequently

**Requested features**

- Allow uploading photos to build off of
- Add ability to adjust deck height and add stairs
- Improve visualization and make it more realistic
- Provide more guidance and instructions


### WhoPoo

[App page](https://appshunter.io/ios/app/whopoo/id1562200973)

Discover and learn about animal droppings and tracks encountered during outdoor activities. Contribute your own findings to a shared encyclopedia, enhancing your understanding of local wildlife.

**Highlights:** Identify animal droppings, Identify animal tracks, Learn about wildlife, Contribute photos to encyclopedia, Interactive outdoor exploration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Trex AR free?

Trex AR is free to download, with no in-app purchases.

### Is WhoPoo free?

WhoPoo is free to download, with no in-app purchases.

### Which has better reviews, Trex AR or WhoPoo?

Trex AR is rated higher. Trex AR averages 3.9 out of 5 from 722 ratings, while WhoPoo averages 2.9 from 8 ratings.

### Do Trex AR or WhoPoo have ads?

Neither Trex AR nor WhoPoo shows ads.

### Which is updated more often, Trex AR or WhoPoo?

Trex AR ships an update every 4 months, and WhoPoo every 2 months. Most recently, Trex AR was updated on October 20, 2026 and WhoPoo on October 16, 2026.

---

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