Seller Book is a sales management app designed for people who sell items on flea market and resale apps.

You can easily manage your daily sales without stress, directly on your Android smartphone. Seller Book helps you track sales across multiple platforms in one place, without using Excel or a PC.

Are you selling on Mercari, Rakuma, Yahoo Auctions, or similar platforms?
Are you managing your sales with notes or spreadsheets?
Seller Book makes sales management simple and efficient.

Developed in collaboration with active flea market sellers, Seller Book allows you to manage sales from multiple apps on a single smartphone. You can record purchase prices, packaging costs, shipping fees, commissions, and more, making it easy to understand your monthly net profit at a glance.

Seller Book is also useful for people who sell at local flea markets and events.

Many PC-based sales management tools are expensive and difficult to use. Seller Book is provided as a free Android app to make sales management accessible to everyone.

[Features]

No PC required. Manage your sales anytime and anywhere.

Monthly sales, costs, and net income displayed in easy-to-read graphs.

Optimized for smartphone input for quick and simple data entry.

Manage sales status such as before listing, listed, preparing shipment, waiting for evaluation, and completed transactions.

Developed together with active flea market sellers, focusing only on essential features.

Data backup and restore functions allow easy migration when changing devices.

No initial registration required. You can start using the app immediately.

[Customer Support]
If you experience any issues while using the application, please contact us at:
sellerbook.customer@gmail.com

When contacting support, please include the following information to help us assist you smoothly:

Description of the issue

Steps that caused the problem

Application version (e.g. 1.0.0)

Device model (e.g. Xperia)

Android OS version (e.g. Android 7)

We also welcome your feedback and suggestions to help us improve the application.