# WWF Free Rivers vs Assemblr EDU

The clearest difference is review sentiment: Assemblr EDU at 100% against WWF Free Rivers's 31%. Assemblr EDU also leads on rating (4.2 vs 3.6) and update cadence (every 2 weeks vs every 2 months). WWF Free Rivers's advantage is in-app purchases (none vs 10) and ratings volume (151 vs 5). On price, ads and device support there is nothing between them.

Both are free to download. Assemblr EDU sells 10 in-app purchases, starting at $4.99 per month. WWF Free Rivers asks for nothing beyond the download.

Assemblr EDU holds the better App Store score, 4.2 against 3.6. That said, the two scores are not equally well evidenced: WWF Free Rivers has 151 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 31% of WWF Free Rivers's written reviews are positive against 100% of Assemblr EDU's.

WWF Free Rivers ships an update every 2 months, Assemblr EDU every 2 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | WWF Free Rivers | Assemblr EDU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (151 ratings)](https://appshunter.io/ios/app/wwf-free-rivers/id1349935575/reviews) | **[4.2 (5 ratings)](https://appshunter.io/ios/app/assemblr-edu-learn-in-3d-and-ar/id1505499586/reviews)** |
| Number of ratings | **151** | 5 |
| Positive reviews | 31.2% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 430 MB | 5 MB |
| Requires iOS | **11.3** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [World Wildlife Fund](https://appshunter.io/developer/581920334) | [Assemblr](https://appshunter.io/developer/1425741171) |

## What reviewers say

### WWF Free Rivers

[App page](https://appshunter.io/ios/app/wwf-free-rivers/id1349935575)

Explore the vital role of rivers in ecosystems and human life through an interactive augmented reality experience. Manipulate river flows to understand the impact of dams and sustainable development, while collecting stories of the people and wildlife that depend on them.

**Highlights:** Interactive augmented reality river model, Simulate damming and sustainable development, Explore five distinct real-world habitats, Collect stories of people and wildlife, Learn about river threats and opportunities

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🎓 Excellent educational tool for teaching environmental concepts
- 🎨 Beautiful graphics and visual design
- 🔮 Innovative AR technology implementation
- 🌍 Engaging way to learn about river ecosystems and conservation
- 📱 Works well on newer devices (iPhone 13, iPhone X)

**What reviewers complain about**

- 🐛 Frequent crashes on launch and during gameplay
- 📱 Poor compatibility with older devices (iPhone 6, iPad Mini 4)
- 🔋 Causes significant device overheating
- 📸 Difficult camera calibration and surface detection
- 🎮 Limited interactivity and gameplay mechanics

**Reported bugs**

- App crashes immediately after launch or during intro
- Black screen or freezing on opening screen
- Camera fails to detect flat surfaces even in well-lit areas
- AR map jumps and moves erratically during use
- App becomes unresponsive after initial loading screen

**Requested features**

- Non-AR version with traditional touch controls (pan, pinch, zoom)
- Ability to build and destroy dams to see real-time effects
- More interactive gameplay and user agency
- Additional landscapes and environments to explore
- Animated creatures with more natural behaviors


### Assemblr EDU

[App page](https://appshunter.io/ios/app/assemblr-edu-learn-in-3d-and-ar/id1505499586)

This platform empowers educators and students with interactive 3D and AR learning experiences. Access ready-made lessons, utilize extensive 3D teaching aids, and create custom projects with an easy drag-and-drop editor. Facilitate virtual classes and bring student creations to life in augmented reality.

**Highlights:** Hundreds of ready-to-use 3D/AR topics, 6,000+ animated 3D teaching aids, Drag-and-drop 3D/AR project editor, Augmented reality project presentations, Virtual class setup and connection, Compatible with all devices

**Features:** macOS Compatibility, Vision Pro support, iPhone Duo support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Individual Plan 1 Month | $4.99 | per month |
| Group Plan (3 Seats) | $4.99 | per month |
| Single Monthly | $8.00 | per month |
| CREATOR EDU MONTHLY (+350 BLR) | $8.99 | per month |
| CREATOR EDU MONTHLY (+350 BLR) | $20.00 | per month |
| CREATOR EDU MONTHLY (+350 BLR) | $250.00 | per month |
| 500 BLR Coins | $14.49 | one-time |
| 1000 BLR Coins | $28.49 | one-time |
| 1500 BLR Coins | $42.90 | one-time |
| 2000 BLR Coins | $57.00 | one-time |


## Frequently asked questions

### Is WWF Free Rivers free?

WWF Free Rivers is free to download, with no in-app purchases.

### Is Assemblr EDU free?

Assemblr EDU is free to download, with in-app purchases available.

### Which has better reviews, WWF Free Rivers or Assemblr EDU?

Assemblr EDU is rated higher. WWF Free Rivers averages 3.6 out of 5 from 151 ratings, while Assemblr EDU averages 4.2 from 5 ratings.

### Do WWF Free Rivers or Assemblr EDU have ads?

Neither WWF Free Rivers nor Assemblr EDU shows ads.

### Which is updated more often, WWF Free Rivers or Assemblr EDU?

WWF Free Rivers ships an update every 2 months, and Assemblr EDU every 2 weeks. Most recently, WWF Free Rivers was updated on November 2, 2026 and Assemblr EDU on November 3, 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.*