セラーログ｜せどり物販の仕入・在庫管理・利益計算・粗利・収支

This is a ledger app for reselling and online sales that handles everything from profit calculation and inventory management to antique goods ledger simply by recording purchases.

The paid version is ¥280 per month. There are no ads.

All data is saved on your device, and no account registration is required.

For antique dealers, keeping separate records of purchases and antique goods ledgers is a significant hassle.

With SellerLog, your regular purchase registration automatically becomes your antique goods ledger.

You can also output CSV files for tax returns and PDF annual income and expenditure reports from the same data.

◆ Features of SellerLog ◆
・¥280 per month: Easy to start and cancel anytime.
・No ads: No ads will be displayed while you're working.
・Data only on your device: No account registration is required, and the information you enter is never sent externally. You can safely record the address and name of your trading partners.
* Supports antique goods ledger: You can record items required by the Antiques Business Act for each purchased item and output them as a CSV and printable PDF.

◆ What you can do with this app ◆
* Record purchase date, supplier, purchase price, and shipping cost
* Manage status: not listed, listed, sold
* Automatically calculate profit and profit margin after deducting fees and shipping costs by simply entering the sales amount
* Register and automatically input fee rates for each sales destination
* Check the break-even point before purchasing with the profit calculator
* See inventory at a glance with photos
* Check monthly profit, sales, purchase amount, inventory value, and monthly trends on the dashboard
* Annual performance report for January to December
* Output CSV for tax filing and PDF output of annual income and expenditure report
* Record and output CSV/PDF for antique goods ledger
* Record and search management numbers
* Quick registration: Register by taking a photo with your camera
* Backup and restore to support device changes

◆ About the Antiques Ledger ◆ You can record the transaction date, item, quantity, characteristics, the other party's address, name, occupation, age, and method of identity verification for each purchased item.

* The transaction date uses the purchase date, and the item uses the category; the information you've already entered will be used.
* If you register trading partners and link them to suppliers, the information will automatically be entered into the supplier's products.
* Unfilled fields will be highlighted in orange.
* You can output your annual antique goods ledger as a CSV file and a printable PDF (output is a paid feature).

◆ For those who: ◆
* Have scattered purchase records in notes or in their heads.
* Want to be able to quickly check "how much profit they made this month."
* Hold an antique dealer's license and want to consolidate purchase records and antique goods ledgers into one app.
* Want to keep proper accounting records for tax filing.
* Are looking for an ad-free, affordable accounting app that can be used long-term.

◆ About Data and Backup ◆
* All data is saved on your device and is not sent externally.
* You can consolidate product data into a single file and save it to your preferred location, such as Google Drive.
* When changing devices, please select "Include photos" in the backup. If you back up without photos, the photos will not be restored to another device.

◆ Free Features and Purchase Information ◆
・You can register up to 10 products for free.
・The paid version has no limit on product registration and allows you to output CSV files for tax returns, annual income and expenditure reports in PDF format, and antique goods ledgers.
・The paid version is a monthly plan (280 yen per month).
・The monthly plan automatically renews every month. You can cancel anytime from "Subscriptions" on Google Play, and you can continue to use the app until the end of the current month even after cancellation.
・If you change devices, you can restore your purchase from the settings.

◆ Important Notes ◆
・The profit calculation results are reference values ​​based on the input content.
・This app is a tool for recording and summarizing, and does not provide legal or tax advice. When filing your tax return, please check the contents yourself and consult with a tax professional as needed.
・For information on the operation of antique goods ledger records and interpretation of laws and regulations, please check with your local police station. Compliance with laws and regulations is the responsibility of the user.
・This app is not an official app.