# ZAST vs Petro+

The clearest difference is update cadence: ZAST at monthly against Petro+'s every 4 months. ZAST also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

ZAST ships an update monthly, Petro+ every 4 months. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | ZAST | Petro+ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Size | 61 MB | 63 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Antonio Pinto](https://appshunter.io/developer/1572903070) | [CRESCE VENDAS TECNOLOGIA LTDA](https://appshunter.io/developer/1451861117) |

## What reviewers say

### ZAST

[App page](https://appshunter.io/ios/app/zast/id1572903068)

**Features:** macOS Compatibility

**In-app purchases:** none


### Petro+

[App page](https://appshunter.io/ios/app/petro-plus/id6504097963)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZAST free?

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

### Is Petro+ free?

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

### Do ZAST or Petro+ have ads?

Neither ZAST nor Petro+ shows ads.

### Which is updated more often, ZAST or Petro+?

ZAST ships an update monthly, and Petro+ every 4 months. Most recently, ZAST was updated on September 17, 2026 and Petro+ on September 23, 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.*