# T Rex Evolution Open World Sim vs Orca Chasers

The clearest difference is in-app purchases: Orca Chasers at none against T Rex Evolution Open World Sim's 4. Orca Chasers also leads on ads (none vs shown) and update cadence (weekly vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. T Rex Evolution Open World Sim sells 4 one-off in-app purchases. Orca Chasers asks for nothing beyond the download.

T Rex Evolution Open World Sim ships an update every 3 months, Orca Chasers weekly. The most recent releases landed on October 18, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | T Rex Evolution Open World Sim | Orca Chasers |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/t-rex-evolution-open-world-sim/id1506633753/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 341 MB | 5 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 9+ |
| Developer | [Asif Naeem](https://appshunter.io/developer/1467501226) | [Stolk.cc](https://appshunter.io/developer/313529099) |

## What reviewers say

### T Rex Evolution Open World Sim

[App page](https://appshunter.io/ios/app/t-rex-evolution-open-world-sim/id1506633753)

Explore a dangerous island as a human, then evolve into a powerful T-Rex. Complete missions like driving trucks, rescuing dinosaurs, and managing a sanctuary. Experience dynamic gameplay that shifts between predator action and strategic park management.

**Highlights:** Evolve into a T-Rex, Drive transport trucks, Rescue trapped dinosaurs, Manage a dinosaur sanctuary, Open-world exploration, Predator action gameplay

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 10k Diamonds | $2.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Unlock All Vehicles | $9.99 | one-time |
| Unlock All Levels | $9.99 | one-time |


### Orca Chasers

[App page](https://appshunter.io/ios/app/orca-chasers/id6810417067)

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

**In-app purchases:** none


## Frequently asked questions

### Is T Rex Evolution Open World Sim free?

T Rex Evolution Open World Sim is free to download, with in-app purchases available.

### Is Orca Chasers free?

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

### Do T Rex Evolution Open World Sim or Orca Chasers have ads?

T Rex Evolution Open World Sim shows ads; Orca Chasers does not.

### Which is updated more often, T Rex Evolution Open World Sim or Orca Chasers?

T Rex Evolution Open World Sim ships an update every 3 months, and Orca Chasers weekly. Most recently, T Rex Evolution Open World Sim was updated on October 18, 2026 and Orca Chasers on October 29, 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.*