Custom39 Half-Price Deal
2026-07-24 02:59:29

Celebrate 2000 Project Achievements with Custom39's Limited Half-Price Kintone Plugins Offer

Celebrate 2000 Project Achievements with Custom39's Limited Offer



To commemorate surpassing 2000 successful system integration (SI) projects, Joyzo Co., Ltd., a company based in Koto City, Tokyo, is launching a limited-time campaign offering over 20 well-established Kintone business improvement plugins through its Custom39 service at half the regular price. This promotion is designed for clients currently using Joyzo's services like System39, emphasizing the continuous investment in system development and improvement.

Half-Price Campaign Details



The half-price offer is applicable from July 21 to September 15, 2026, with requests accepted up to the last day of the campaign. Clients can access various pricing plans, making high-quality plugins more affordable:

  • - Light Plan:
- Regular Price: ¥139,000 (excl. tax)
- Campaign Price: ¥69,500 (excl. tax)

  • - Standard Plan:
- Regular Price: ¥390,000 (excl. tax)
- Campaign Price: ¥195,000 (excl. tax)

It is essential to note that to utilize the Custom39 service, clients must have a contract with System39. However, for individuals interested in these services without a prior agreement, Joyzo encourages reaching out for consultation.

The Background of This Campaign



Since its inception in 2011, Joyzo has focused on developing solutions tailored to the Kintone platform. Over the years, they have collaborated with a wide range of industries, including manufacturing, healthcare, and local governments, leading to significant advancements in business efficiency. Achieving 2000 SI projects reflects a shared journey with clients in striving for operational excellence, encouraging the company to provide these plugins at an accessible price as a thank-you gesture.

A Message from the President, Yasutaka Shimonoya



Joyzo's president, Yasutaka Shimonoya, expressed immense gratitude towards their clients for their unwavering support throughout the years. He highlights that the 2000 projects signify collective efforts toward improving operations.

"Our systems are not merely endpoint solutions; they should evolve alongside changing business needs. This belief drives us to help as many customers as possible experience the essential investment required for ongoing development, and this campaign is a part of that vision," Shimonoya stated.

What is System39 and Custom39?



Joyzo's System39 is its flagship service, providing clients with a direct, flat-rate development model for Kintone applications. Experienced engineers engage directly with clients to build applications on-site, enabling projects to be completed in as little as two weeks without additional fees for changes. This approach alleviates the pressure of ongoing budget management after the system implementation.

The distinctive Custom39 service augments the Kintone ecosystem developed through System39 with advanced customizations. This allows for more complex business challenges to be addressed with exclusive plugins crafted by Joyzo's specialists.

Outstanding Value: The Plugins Available



With over a decade of Kintone development expertise, Custom39 offers a rich selection of over 20 plugins that can significantly enhance operational efficiency. Some noteworthy plugins include:

  • - ProductPicker Plugin: Eliminates the need to search for products one by one in the master tables by allowing for bulk registration in the details tab.

  • - Duplicated Record Check Plugin: Enables users to validate multiple fields for duplicates and decide whether to proceed or cancel data saving for higher data quality assurance.

  • - Status Change History Saving Plugin: Automates the storage of status change histories within records for reference in audits and internal controls.

Client Success Stories



One success story includes Photron Inc., a precision equipment and image processing related company. They adopted the Status Change History Saving Plugin to consolidate their application workflow into Kintone, enhancing their audit processes and internal controls thanks to clear historical tracking.

Contact for Inquiries



If you are interested in the campaign or have questions about the services, please reach out to Joyzo through their inquiry form, even if you're not yet a System39 user.

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For more information about Joyzo, visit their official website here. Joyzo aims to resolve client challenges through tailored Kintone development and offers extensive expertise gained from over 2000 projects. The company's commitment is reflected in their ongoing support and the quality of their services.


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