# Great Crystal vs PETROMINit!

The clearest difference is update cadence: Great Crystal at weekly against PETROMINit!'s every 2 weeks. Great Crystal also leads on device support (3 vs 1) and iOS requirement (11.0 vs 16.6). On price, 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.

Great Crystal ships an update weekly, PETROMINit! every 2 weeks. The most recent releases landed on October 2, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Great Crystal | PETROMINit! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (49 ratings)](https://appshunter.io/ios/app/petrominit/id6477146878/reviews)** |
| Number of ratings | — | **49** |
| Positive reviews | — | 27.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | — | Free |
| Size | 63 MB | 81 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [BizTackle Innovations](https://appshunter.io/developer/1562191174) | [Petromin Corporation](https://appshunter.io/developer/1447360284) |

## What reviewers say

### Great Crystal

[App page](https://appshunter.io/ios/app/great-crystal/id6450386227)

**Features:** macOS Compatibility

**In-app purchases:** none


### PETROMINit!

[App page](https://appshunter.io/ios/app/petrominit/id6477146878)

This app provides a streamlined and secure car care experience. It features an intuitive design, advanced security options, and tools to manage your vehicle, track loyalty points, and find nearby service centers. Enjoy exclusive offers and instant coupon notifications for a rewarding car maintenance journey.

**Highlights:** User-friendly interface, Biometric security, Loyalty points calculator, Coupon notifications, Vehicle management, Service center locator

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

**In-app purchases:** none


## Frequently asked questions

### Is Great Crystal free?

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

### Is PETROMINit! free?

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

### Do Great Crystal or PETROMINit! have ads?

Neither Great Crystal nor PETROMINit! shows ads.

### Which is updated more often, Great Crystal or PETROMINit!?

Great Crystal ships an update weekly, and PETROMINit! every 2 weeks. Most recently, Great Crystal was updated on October 2, 2026 and PETROMINit! on October 12, 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.*