# GRCatalog vs ST25DV

GRCatalog and ST25DV are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | GRCatalog | ST25DV |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 7 MB | 22 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Grabba International Pty Ltd](https://appshunter.io/developer/375058083) | [STMicroelectronics](https://appshunter.io/developer/1801774735) |

## What reviewers say

### GRCatalog

[App page](https://appshunter.io/ios/app/grcatalog/id559618155)

**Features:** macOS Compatibility

**In-app purchases:** none


### ST25DV

[App page](https://appshunter.io/ios/app/st25dv-i2c-cryptodemo/id1518537022)

**In-app purchases:** none


## Frequently asked questions

### Is GRCatalog free?

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

### Is ST25DV free?

ST25DV is free to download, with no in-app purchases.

### Do GRCatalog or ST25DV have ads?

Neither GRCatalog nor ST25DV shows ads.

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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.*