# Project 4.0 vs Petro USA Rewards

The clearest difference is ads: Project 4.0 at none against Petro USA Rewards's shown. Petro USA Rewards's advantage is iOS requirement (12.2 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Project 4.0 ships an update every 5 months, Petro USA Rewards every 10 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Project 4.0 | Petro USA Rewards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/petro-usa-rewards/id6443882849/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 months** | Every 10 months |
| Monetization | — | Ad-supported |
| Size | 83 MB | 303 MB |
| Requires iOS | 17.0 | **12.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nikola Nikolov](https://appshunter.io/developer/1546064655) | [Petro USA](https://appshunter.io/developer/1650263947) |

## What reviewers say

### Project 4.0

[App page](https://appshunter.io/ios/app/project-40/id1613558404)

**Features:** macOS Compatibility

**In-app purchases:** none


### Petro USA Rewards

[App page](https://appshunter.io/ios/app/petro-usa-rewards/id6443882849)

Access exclusive deals and join a loyalty program directly from your phone. This app offers a convenient way to manage special offers and maximize benefits.

**Highlights:** Exclusive deals access, Loyalty program enrollment, Mobile offer management, Special offerings, Faster deal access

**In-app purchases:** none


## Frequently asked questions

### Is Project 4.0 free?

Project 4.0 is free to download, with no in-app purchases.

### Is Petro USA Rewards free?

Petro USA Rewards is free to download, with no in-app purchases.

### Do Project 4.0 or Petro USA Rewards have ads?

Petro USA Rewards shows ads; Project 4.0 does not.

### Which is updated more often, Project 4.0 or Petro USA Rewards?

Project 4.0 ships an update every 5 months, and Petro USA Rewards every 10 months. Most recently, Project 4.0 was updated on November 7, 2026 and Petro USA Rewards 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.*