---
title: "sketchbookDuo - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "sketchbookDuo is the official companion app for MarkinBox and Patmark devices. With sketchbookDuo, you can easily design, manage, and send marking data directly from your iPhone or iPad to your MB3 de"
---

# sketchbookDuo — United States
> MB3/PM2 Pin Marker Control App

![sketchbookDuo App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/dd/21/9d/dd219dfb-9934-1d50-62af-8e3ab119ae15/AppIcon-0-0-1x_U007epad-0-10-0-85-220.png/434x0w.png)

**Developer:** [Tocho Marking Systems](https://apptail.io/developer/tocho-marking-systems-FFOb) (Japan)
**Category:** Utilities
**Rating:** 5.0/5 (1 ratings)
**Price:** Free
**Bundle ID:** com.ToCho..MB3App
**Store:** Apple App Store
**Country:** United States
**Version:** 4.1 (released 2026-10-22)
**Original Release:** 2025-09-10
**Languages:** English, German, Japanese, Spanish

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6745931339)
**AppTail Page:** [https://apptail.io/app/sketchbookduo-rYjx/united-states](https://apptail.io/app/sketchbookduo-rYjx/united-states)

## sketchbookDuo Description
sketchbookDuo is the official companion app for MarkinBox and Patmark devices.
With sketchbookDuo, you can easily design, manage, and send marking data directly from your iPhone or iPad to your MB3 device.

Key Features
	•	Grid-based editor – Create and place text precisely on customizable grids (80×20, 33×15, 15×15).
	•	File management – Save, load, rename, overwrite, and delete local marking files (.bppg).
	•	Device connection – Connect to MB3 devices quickly over Wi-Fi.
	•	Marking control – Start, pause, and send marking jobs with one tap.
	•	Settings – Adjust grid sizes and prepare for future features.

sketchbookDuo is designed for professionals who need precision and efficiency in portable marking. Whether in the workshop or on-site, MB3App makes marking tasks simpler, faster, and more reliable.

## sketchbookDuo Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/e3/b6/92/e3b692e3-b115-784b-3357-20090e7d346c/IMG_0401_resized.jpg/1290x2796.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/8b/a4/c1/8ba4c16b-f2da-d3e9-7fde-4255528a156e/AppStore_RGB_4.jpg/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/7a/13/88/7a1388e8-90ad-8ccc-abb4-ba1dc624a9af/AppStore_2.png/1320x2868.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/73/1b/80/731b8096-3d5f-9f57-0476-01b7edfe18c9/AppStore_3.png/1320x2868.png)

## sketchbookDuo Rating Breakdown in United States
- 5 stars: 1 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)






## sketchbookDuo Available In
- [United States](https://apptail.io/app/sketchbookduo-rYjx/united-states)
- [Australia](https://apptail.io/app/sketchbookduo-rYjx/australia)
- [Canada](https://apptail.io/app/sketchbookduo-rYjx/canada)
- [China](https://apptail.io/app/sketchbookduo-rYjx/china)
- [Germany](https://apptail.io/app/sketchbookduo-rYjx/germany)
- [United Kingdom](https://apptail.io/app/sketchbookduo-rYjx/united-kingdom)
- [Hong Kong SAR China](https://apptail.io/app/sketchbookduo-rYjx/hong-kong)
- [Hungary](https://apptail.io/app/sketchbookduo-rYjx/hungary)
- [Ireland](https://apptail.io/app/sketchbookduo-rYjx/ireland)
- [Japan](https://apptail.io/app/sketchbookduo-rYjx/japan)
- [Norway](https://apptail.io/app/sketchbookduo-rYjx/norway)
- [New Zealand](https://apptail.io/app/sketchbookduo-rYjx/new-zealand)
- [Uganda](https://apptail.io/app/sketchbookduo-rYjx/uganda)
- [United Arab Emirates](https://apptail.io/app/sketchbookduo-rYjx/united-arab-emirates)
- [Uzbekistan](https://apptail.io/app/sketchbookduo-rYjx/uzbekistan)

---

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