# DFS Unlock vs Petro Solutions Call System

The clearest difference is iOS requirement: DFS Unlock at 8 against Petro Solutions Call System's 13.0. 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.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 4, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | DFS Unlock | Petro Solutions Call System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.9 (9 ratings)](https://appshunter.io/ios/app/dfs-unlock/id1343398221/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free | — |
| Size | 48 MB | 15 MB |
| Requires iOS | **8** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Wayne Fueling Systems LLC](https://appshunter.io/developer/1343398220) | [ORION MERCHANT SOLUTIONS, INC.](https://appshunter.io/developer/1199581584) |

## What reviewers say

### DFS Unlock

[App page](https://appshunter.io/ios/app/dfs-unlock/id1343398221)

This application provides authorized service operators and global platform support with response codes for device access. It facilitates interactions with systems like iXPay/SPM and iGEM.

**Highlights:** Receive response codes for device access, Supports iXPay/SPM, Supports iGEM, Supports DFSEdge, For Authorized Service Operators, For Global Platform Support

**Features:** macOS Compatibility

**In-app purchases:** none


### Petro Solutions Call System

[App page](https://appshunter.io/ios/app/petro-solutions-call-system/id6448895333)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DFS Unlock free?

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

### Is Petro Solutions Call System free?

Petro Solutions Call System is free to download, with no in-app purchases.

### Do DFS Unlock or Petro Solutions Call System have ads?

Neither DFS Unlock nor Petro Solutions Call System shows ads.

### Which is updated more often, DFS Unlock or Petro Solutions Call System?

DFS Unlock ships an update every 4 months, and Petro Solutions Call System every 4 months. Most recently, DFS Unlock was updated on October 4, 2026 and Petro Solutions Call System on September 26, 2026.

---

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