One-stop app development — from building to launch, all on HRUM
Building an app usually means picking development tools, servers, a database, deployment and a domain separately and stitching them together. On HRUM, building the app, attaching a server and database, and launching it all happen in one place. Assemble it from blocks without code, or upload a web app you built with an AI coding tool.
Create my app Build without code Plans & pricing
What HRUM takes care of
- Building the app — assemble it from blocks without code in Baro (block-based app builder), or build it yourself with an AI coding tool by following the free ebooks (Korean).
- Servers and deployment — connect a GitHub repository and RIDM Apps app hosting builds and deploys on every push and publishes the app at
<name>.ridm.ai. - Database — every app gets its own PostgreSQL database. Connection details arrive as environment variables, and you can create and download database backups from the app screen.
- Environment variables and security — environment variables are stored encrypted, and if keys, tokens or passwords show up in the repository, the build stops and nothing is published.
- Domains — buy and manage domains in the Domains menu of the console.
- Feature APIs — building a Saju app? Call features such as Manseryeok (the Korean Four Pillars calendar), compatibility, Lifetime Saju and dream interpretation straight from the Saju AI API.
Two ways to build
Build without code
In Baro, pick the blocks for your screens and set the copy and colors, and the app is assembled. Upload the downloaded deployment bundle to RIDM Apps as is and you're live. A Saju app is the quickest example.
Build it yourself with AI coding
Give your AI coding tool one starting sentence, and our free hands-on ebooks (in Korean) walk you step by step from sign-up and sign-in to saving to the database and launching.
- Members-only web app with AI (Korean) — sign-up, sign-in and a members-only notepad
- All-in-one fortune AI (Korean) — a Saju and fortune app
- Character chat app (Korean) — an app for chatting with an AI character
Any stack works as long as there is a Dockerfile at the repository root and the app responds on port 3000. Full requirements are in the deployment guide.
Four steps to launch
- Build — assemble it in Baro or build it with an AI coding tool, and push it to GitHub.
- Apply — pick a plan and an address in My Apps in the console.
- Connect — install the GitHub App and pick a repository and branch. It only gets read access to the repository.
- Publish — push, and after the build and checks it goes live right away.
Rather not build it yourself? Build support
- We help build web apps (shop bookings, consultations, intro pages and more). Scope and terms are set in the build contract (Terms of Service, Article 4 (Korean)). We build the screens on HRUM and take it all the way to launch.
- App Store and Google Play listings go under a developer account in the partner's name, and HRUM helps with the process.
- You can use HRUM Payments, where HRUM collects payments for you. Apps you code can also take payments through a payment gateway (PG) you connect yourself.
What the support includes
- HRUM sign-up and console setup
- Choosing, buying and connecting a domain (domain fees extra)
- Card registration and plan guidance
- Connecting bookings and customer management, initial copy and photos
- Store listing done together under your name (Package C, with store app)
- A walkthrough of how to use it once it's built
Build support prices
| Item | Price (excl. VAT) |
|---|---|
| Main page | 500,000 KRW |
| Sub page (with admin screen) | 300,000 KRW |
| Sub page (no admin screen) | 200,000 KRW |
| Store app packaging | 300,000 KRW |
Packages
| Package | Includes | Price (excl. VAT) |
|---|---|---|
| A Setup | 1 main + 2 sub pages (no admin screen) | 800,000 KRW |
| B Custom | 1 main + 4 sub pages (with admin screen) | 1,500,000 KRW |
| C With store app | B Custom + store app packaging | 1,700,000 KRW |
10% VAT extra · hosting fees extra (pricing page) · 2 rounds of revisions included · built on HRUM · store listing under your own account
Tell us about the app you want, and the AI shows you a draft quote from the published price list right away (the assistant replies in Korean).
What you write is sent to Anthropic in the US to generate the replies. If you'd rather not, contact us by phone (010-8113-6606) or email (contact@float.do). Please don't enter sensitive information such as national ID numbers. Privacy Policy (Korean)
Build support inquiries: contact@float.do
Pricing
App hosting starts with a free plan. Paid plans and API usage are deducted from your prepaid credits. See the pricing page for amounts.
FAQ
Can I build an app without knowing how to code?
Yes. Pick blocks in Baro to assemble the app without code, and upload the deployment bundle to RIDM Apps to publish it. If you'd rather have an AI coding tool build it, the free ebooks (Korean) guide you from the first prompt to launch.
Do I need to set up a server or database myself?
No. RIDM Apps builds and deploys on every push and gives each app its own PostgreSQL database.
What kind of apps can I build?
Web apps. Any stack works with a Dockerfile and an app that responds on port 3000. Ordinary web apps that don't use the Saju AI API can be hosted too.
Can you build the app for me or help with app store listings?
Yes. App build support is offered under a separate contract. We build on HRUM and help you list on the App Store and Google Play under a developer account in the partner's name. Prices are in build support prices (excl. VAT). Contact us at contact@float.do.
Can I buy a domain too?
Yes. Buy and manage them in the Domains menu of the console. Apps go live at <name>.ridm.ai from the start.
Can my app take payments?
Apps you code can take payments today through a payment gateway (PG) you connect yourself. HRUM Payments is available too. Conditions are in the Terms of Service (Korean).
How much does it cost?
There's a free plan to start; paid plans and API usage are deducted from your credits. See the pricing page for amounts.
Contact: contact@float.do · Operated by FLOAT Co., Ltd.