# GRX25 vs sketchbookDuo

The clearest difference is iOS requirement: GRX25 at 10.0 against sketchbookDuo's 16.6. On price, ads, 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.

## The numbers

| Metric | GRX25 | sketchbookDuo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sketchbookduo/id6745931339/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Fortnightly |
| Monetization | — | Free |
| Size | 12 MB | 5 MB |
| Requires iOS | **10.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Austmine Limited](https://appshunter.io/developer/1812785634) | [Tocho Marking Systems, Inc.](https://appshunter.io/developer/1159545791) |

## What reviewers say

### GRX25

[App page](https://appshunter.io/ios/app/grx25/id6745531890)

**In-app purchases:** none


### sketchbookDuo

[App page](https://appshunter.io/ios/app/sketchbookduo/id6745931339)

Design, manage, and send marking data to compatible devices. Features a grid-based editor for precise text placement and robust file management for marking jobs. Connects wirelessly for efficient control of marking tasks.

**Highlights:** Grid-based editor, File management, Device connection, Marking control, Customizable grids

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

**In-app purchases:** none


## Frequently asked questions

### Is GRX25 free?

GRX25 is free to download, with no in-app purchases.

### Is sketchbookDuo free?

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

### Do GRX25 or sketchbookDuo have ads?

Neither GRX25 nor sketchbookDuo 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.*