# Rio Rex vs Dino Robot Infinity

The clearest difference is rating: Dino Robot Infinity at 4.8 against Rio Rex's 4.1. Dino Robot Infinity also leads on in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 11 months). Rio Rex's advantage is ads (none vs shown) and iOS requirement (9.0 vs 11.0). On price, review sentiment, ratings volume and device support there is nothing between them.

Both are free to download. Rio Rex sells 1 one-off in-app purchase. Dino Robot Infinity asks for nothing beyond the download.

Dino Robot Infinity holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 50 and 38 respectively. Written reviews point the same way: 72% of Rio Rex's written reviews are positive against 80% of Dino Robot Infinity's.

Rio Rex ships an update every 11 months, Dino Robot Infinity every 3 weeks. The most recent releases landed on September 17, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | Rio Rex | Dino Robot Infinity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (50 ratings)](https://appshunter.io/ios/app/rio-rex/id1446730341/reviews) | **[4.8 (38 ratings)](https://appshunter.io/ios/app/dino-robot-infinity/id1476386168/reviews)** |
| Number of ratings | **50** | 38 |
| Positive reviews | 72.2% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 434 MB | 472 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 9+ |
| Developer | [gametornado](https://appshunter.io/developer/456365838) | [SeungYong Kim](https://appshunter.io/developer/1468244823) |

## What reviewers say

### Rio Rex

[App page](https://appshunter.io/ios/app/rio-rex/id1446730341)

Control a terrifying T-Rex rampaging through the streets of Rio, destroying buildings and feasting on humans. Unleash flaming breath and cause mayhem in this action-packed arcade game.

**Highlights:** Control a T-Rex, Destroy city buildings, Feast on humans, Use flaming breath, Arcade gameplay, Cause mayhem

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| premium user | $0.99 | one-time |


### Dino Robot Infinity

[App page](https://appshunter.io/ios/app/dino-robot-infinity/id1476386168)

Assemble and battle powerful dinosaur robots in an epic infinity war. Experience dynamic combat with vibrant effects and diverse dinosaur robot options. This game invites you to a world of mechanical prehistoric creatures.

**Highlights:** Dinosaur robot assembly, Robot battles, Various combat motions, Colorful effects, New robot updates

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

**In-app purchases:** none


## Frequently asked questions

### Is Rio Rex free?

Rio Rex is free to download, with in-app purchases available.

### Is Dino Robot Infinity free?

Dino Robot Infinity is free to download, with no in-app purchases.

### Which has better reviews, Rio Rex or Dino Robot Infinity?

Dino Robot Infinity is rated higher. Rio Rex averages 4.1 out of 5 from 50 ratings, while Dino Robot Infinity averages 4.8 from 38 ratings.

### Do Rio Rex or Dino Robot Infinity have ads?

Dino Robot Infinity shows ads; Rio Rex does not.

### Which is updated more often, Rio Rex or Dino Robot Infinity?

Rio Rex ships an update every 11 months, and Dino Robot Infinity every 3 weeks. Most recently, Rio Rex was updated on September 17, 2026 and Dino Robot Infinity on August 20, 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.*