/ Web & Mobile
Websites and apps you can keep improving after launch
A website or app starts being used the day it launches. Applications come in, bookings are made, members log in. Whether you can respond quickly to the inconveniences and requests that only surface then shapes how it gets used from that point on.
RG develops web apps and smartphone apps and builds websites. We cover everything from membership services, booking, e-commerce, and admin panels to iOS and Android apps and corporate and service websites. We start by working out who will use it, in what situations, and which parts of your current operations it will replace, then design the screens and the system behind them.
The person who takes your inquiry goes on to handle design and development. Because we work in Japanese, English, and Korean, we can build multilingual sites and services with you, including checking the copy.
/ Services
01
We develop membership services with sign-up and login, booking systems, e-commerce sites, internal admin panels, and more. We also build in the integrations you need to run them, such as payments, email delivery, and chat notifications.
02
We develop apps that run on both iOS and Android. Building both together keeps development and maintenance effort down. We also help you prepare for release on the App Store and Google Play.
03
We build websites for company information, recruiting, and service introductions. Built on WordPress, the site lets you update news and case studies yourself. We also prepare the pages needed for launch, such as a contact form and a privacy policy.
04
We build sites and services in Japanese, English, and Korean. Beyond a language switcher, we check that the text reads naturally in each language. We can also build so that more languages can be added later.
05
We examine outdated sites and systems whose inner workings are no longer understood, and judge whether they can be fixed or should be rebuilt. If rebuilding, we decide first how to carry over your current URLs and accumulated data.
06
Under a monthly maintenance contract, we take on bug fixes, WordPress and library updates, usability improvements, and more. Looking at inquiries and how the site is used, we decide with you what to work on next.
/ Why RG
The person who hears your needs at the first meeting handles everything from screen design to implementation and launch. With no hand-off between sales and development, misunderstandings are less likely, and even small requests make it straight onto the screen.
For a booking site: once a booking comes in, who checks what? For an admin panel: what are you tracking today, and in which spreadsheets? We confirm the workflow before designing screens, so you don't launch only to find "it doesn't work for the people using it."
We plan, develop, and run our own products, including Rally, a live quiz for events, and RemoteGate, an SSH terminal app. We bring our experience of improving our own products after launch and distributing an app through the app stores to our client work.
Even on projects involving overseas clients or partners, we can review specifications and check copy without an interpreter. We have also rebuilt a Korean company's corporate website in Korean.
/ Process
STEP 01
We ask what you want to build, what's causing trouble today, and who will use it. If you have an existing site or app, we look at how it's built too. It's fine if your requirements aren't settled. Consultations and estimates are free.
STEP 02
We map how both users and administrators work and list the screens and features needed. While you review the screen layout, we decide what to build first and what can wait, then provide an estimate.
STEP 03
We show you working screens as early as possible and adjust them as you try them out. For multilingual sites, we also check the copy in each language at this stage.
STEP 04
We set up the production environment and check display, behavior, form submissions, and more before launch. For apps, we also prepare for app store review. You can also start with a teaser site and switch to the full launch later.
STEP 05
After launch, we keep fixing bugs, updating, and improving under a monthly maintenance contract. Looking at how the site or app is used, we decide with you what to work on next.
/ Pricing
Cost depends on the number of screens and features, whether multilingual support is needed, integration with external services, and more. Consultations and estimates are free. We provide an estimate after hearing what you want to build.
All prices exclude consumption tax.
/ Examples
A live quiz for weddings, after-parties, and other events. Guests join from a QR code without installing an app, and answers are tallied on the spot and announced as rankings. It supports five languages — Japanese, English, Korean, Chinese, and Vietnamese — and was officially launched in September 2026.
We built official websites for two game companies (2024). We made the Japanese–English sites updatable through WordPress and built them on AWS. We handled everything from the teaser site to the full launch, and also prepared the contact form and legally required pages.
We joined the development team for enhancements to a web app, offered by a major manufacturer, that connects with its own products (2023).
We rebuilt the corporate website of a Korean management consulting firm (2025). We added a form for requesting a free consultation to the Korean-language site and built it on Google Cloud.
/ FAQ
Yes. We start by hearing what's causing trouble and how your work runs today. As we talk, we sort out which features you need first and which can wait. Consultations and estimates are free.
We develop apps that run on both operating systems together. We developed our own app, RemoteGate, ourselves and offer it on the App Store and Google Play. We can also help you prepare for app store review and the submission process.
We first look at the source code and the state of the servers, then judge whether modifications will do or whether rebuilding is the better route. Even if no documentation remains, talk to us — we can start by investigating how it works.
For corporate and service websites, building on WordPress lets you update news, case studies, and more yourselves. We ask at the start how much you want to update yourselves, and set up the editing screens to match.
We work in Japanese, English, and Korean. Beyond a language switcher, we check that the text reads naturally. If you need other languages, talk to us, including about how to arrange the translations.
Yes, under a monthly maintenance contract. The main work includes bug fixes, WordPress and library updates, and small improvements. What's included is decided to suit each site or app. We have also handled operations and maintenance after launch for a website aimed at aesthetic clinics.
Talk to us, including about whether to use an environment you already have or set up a new one. Whose name the contracts are in and who manages them should be decided at the start, with operations after launch and any future handover in mind.
How much can change depends on the change and how far development has progressed. Because we show you working screens early on, telling us about concerns early makes them easier to accommodate. If a change would affect the cost or launch date, we explain that beforehand.
/ Contact
You don't need a finished spec. Tell us about the problem you're facing, and we'll propose an approach and a rough estimate. Consultations and estimates are free, and we usually reply within one business day.
TEL +81-3-5830-7587 (Weekdays 10:00–19:00 JST)
MAIL info@raregleam.com