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// RESDEV  /  Development Division — RESONANCE, K.K.

Web & App
Development Web & app development in Amami Oshima, Japan — RESDEV, the development division of RESONANCE, K.K.

From web production & maintenance to systems, apps, and business DX. Building things from Amami Oshima to support our region and its businesses.

WebApp DevHeadless CMSBusiness DX
resdev — zsh

$ resdev build --target web,app,headless,dx

✓ compiled — 4 capabilities ready

➜ deploying from amami-oshima …▋

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// About Us

About RESDEV

RESDEV, the development division of RESONANCE, K.K.,is a team building websites, apps, and business DX,based in Amami Oshima, Japan.

We handle everything from planning and design to development and operation. Rather than just shipping and leaving, we focus on building systems that are easy to run and sustainable. We also collaborate with AMAMI CAMERA, our video & aerial division, to keep creating work rooted in the local community.

// Services

What We
Build

From web production and app development to business DX, we help across the whole lifecycle—from planning to operation. Our main areas are below.

01

Website Production

Planning & building corporate / brand sites.

We handle planning, design, and implementation end to end. Using modern stacks like Astro, we build sites that are fast, easy to maintain, and SEO-friendly.

  • › Corporate & brand websites
  • › Landing pages & campaign sites
  • › Multilingual & accessibility-aware
02

App & System Development

Web apps, mobile apps & business systems.

We build web and mobile apps and systems tailored to your work, and excel at cross-cutting integrations across video, maps, and data.

  • › Business apps, booking & membership systems
  • › Mobile apps (Flutter, etc.)
  • › API & external service integration
03

Headless CMS

Headless WordPress × static sites.

Edit in the familiar WordPress dashboard, serve via a fast static site. We design and implement secure, easy-to-run headless setups.

  • › Headless WordPress architecture
  • › Unified news & portfolio management
  • › Renewals of existing sites
04

Business DX & Automation

Unify your work with our in-house DX suite.

Built on our in-house DX suite that brings projects, documents, tasks, calendars, and files together, we drive visibility and automation across your operations.

  • › Unified projects, clients & documents
  • › Shared tasks & schedules
  • › Issuing & sending invoices and contracts
// Inquiry

Contact

For inquiries about web production, app development, or business DX, please feel free to contact us using the form below.

// Group

RESONANCE

RESONANCE, K.K. Corporate AMAMI CAMERA Media Division MOONCHILD AMAMI Space Division
// Location

ACCESS

RESONANCE, K.K.

Inside MOONCHILD AMAMI,
10-1 Irifune-cho, Naze,
Amami City, Kagoshima 894-0034, Japan

Tel: 0997-69-3704
Mail: office@resdev.jp
@memoroll_dev MEMOROLL on X

PRIVACY POLICY

RESONANCE, K.K. ("the Company") establishes the following privacy policy, builds a framework for protecting personal information, and promotes its protection by ensuring all employees understand and act on its importance.

1. Management of Personal Information

The Company keeps customers’ personal information accurate and up to date, and implements necessary safety measures—such as maintaining security systems, establishing management structures, and thoroughly training staff—to prevent unauthorized access, loss, damage, alteration, or leakage of personal information.

2. Purpose of Use

Personal information entrusted to us by customers is used to contact you, provide information about our services, respond to inquiries, and send emails and materials.

3. No Disclosure to Third Parties

The Company manages entrusted personal information appropriately and does not disclose it to third parties except in the following cases:
· When the customer has given consent
· When disclosing to a contractor engaged to provide a service requested by the customer
· When disclosure is required by law

4. Security Measures

The Company takes thorough security measures to ensure the accuracy and safety of personal information.

5. Inquiries by the Individual

If a customer wishes to review, correct, or delete their own personal information, we will respond after verifying their identity.

6. Compliance and Review

The Company complies with applicable Japanese laws and other norms regarding the personal information it holds, and reviews and improves this policy as appropriate.

Contact

For inquiries about how we handle personal information, please contact:
RESONANCE, K.K.
10-1 Irifune-cho, Naze, Amami City, Kagoshima 894-0034, Japan
Mail: office@res.co.jp