せどりアプリならAma-Jack 仕入れ/転売をもっと手軽に

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Everyone
10K+
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Everyone
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About this app

\Latest Update: Now Featuring AI Research Function!/

【App Overview】
Ama-Jack is a tool that supports sellers by reading product JAN codes (barcodes), comparing prices with Amazon, and more.

The latest version includes an "AI Research Function," which powerfully assists in finding profitable products and making purchasing decisions through extensive data analysis.

In addition to all products registered with JAN codes on Amazon, you can easily compare prices with Amazon by entering product model numbers or keywords that identify the product in the search bar.

All of these functions are completely free to use.

【Features】
In addition to barcode reading and model number searches, the search results page visualizes the number of times a product has been sold on Amazon in the last three months, on a monthly basis.

You can also check the price, seller, and ranking trends since the start of sales. Even beginners who are not familiar with sales rankings can easily make sales predictions and conduct reselling with confidence.

Furthermore, by utilizing the newly implemented "AI Research Function," data-driven "OK/NG" decisions for purchasing become clearer, enabling speedy research with reduced risk of unsold inventory.

In addition, you can jump to other sites such as Rakuten, Yahoo! Shopping, and Yahoo! Auctions with a single tap, significantly reducing the time spent on research.

You can also list purchased products on Amazon through the screen interface.

[Function List]
◆[NEW] AI Research Function
AI learns and analyzes past price trends and demand trends to support your research and purchasing decisions.

◆High-Performance Product Barcode Reading Search
Content: Equipped with a camera barcode reader
◆Product Keyword Search Function
You can search for products by keyword or model number and display them in a list.

◆Product Details Function
① Extensive Graph Function
- Display graphs of price trends for new and used items
- Display graphs of the number of sellers for new and used items
- Display graphs of sales rankings
② Display of sales forecasts for the past 3 months in 1-month increments
③ Display of detailed product information
◆ Jump function to various e-commerce sites
◆ CSV output of procurement list
◆ List products from the procurement list on Amazon
You can set images for procurement items (used items). (Images are not required)

【Disclaimer】
We are not responsible for any troubles, losses, or damages resulting from the use of this software.

Please make procurement decisions based on this software at your own risk.
Listing on Amazon/Easy calculation Side job/Sedori tool
Updated on
Aug 31, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Device or other IDs
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

AIリサーチ機能の追加
Content rating
Everyone
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App support

About the developer
JACK ALL, K.K.
jackallsuport@gmail.com
8-21, KAN-OMMACHI, NISHI-KU HAMADA BLDG.302 HIROSHIMA, 広島県 733-0031 Japan
+81 90-3638-1359