Services from the same company
INTA – Life is TimingAI Dongja, a Saju app in everyday use, built on the same Saju engine. Try Saju, Zi Wei Dou Shu, zodiac signs, Compatibility, dream readings and Tarot first.
Saju StudyBuild your own skill at reading Saju by unfolding each reading one character at a time
FLOATFrom the Saju engine to apps, APIs and courses, FLOAT Co., Ltd. builds it all in-house
HRUM Pricing
You pay only for what you use, in KRW. Find the product you need below.
Terms in one line
- Call
- One API request. Calculation and reading products deduct a fixed amount per call.
- Token
- The unit AI uses to count text. In Korean, one character is roughly one token.
- 1M tokens
- One million tokens. At "₩1,000 / 1M", 1,000 tokens cost ₩1.
- Input · Output
- Input is the text you send the AI (questions, instructions); output is the answer it writes. Each has its own rate.
- Cached input
- When you send OpenAI models the same opening text repeatedly, that part is billed at 30% of the input rate.
- LLM API (resale)
- The original GPT · Gemini · Claude models, unchanged. Cost × exchange rate 1,500 × 1.10.
- RIDM Memory
- The same models with the RIDM memory engine attached. The server remembers each user's conversations. Resale price × 1.30.
- Credits · VAT
- Top-ups become credits 1:1. Prices in the tables are excl. VAT (the 10% VAT is paid separately when you top up).
Calculation endpoints
Send a birth date and time and get the calculated result back. The amount below is deducted once per call.
| Product | What you get | Price |
|---|
Reading products — Lifetime Saju
Returns the calculation with reading paragraphs written in advance from HRUM's Saju theory. Billed separately from the calculation APIs: the amount below is deducted per call.
| Product | What you get | Price |
|---|
AI Saju Reading
We calculate the Saju chart and an AI writes the reading and advice. The calculated chart we feed to the AI is free; only the question and persona (input) and answer (output) tokens are charged. Choose the slower response (speed: value) for 20% off.
| Product | Input (₩ / 1M tokens) | Output (₩ / 1M tokens) |
|---|
Example: a 500-token question plus a 1,500-token answer costs about ₩ for a fast-response reading.
What the Saju AI reads
- Saju — Your innate tendencies and where things are heading now, with today's day pillar too
- Zi Wei Dou Shu — The flow of each area of life from the Purple Star chart (birth time required)
- Astrology — Tendencies from zodiac signs and planetary positions
- Dream Interpretation — What the symbols in a dream mean
- Tarot — Your current question, through the cards drawn
Call them all together for one combined reading, or call just the AI you need (only). See how to request
Charges depend on response length, at the AI Saju Reading token rates above.
LLM model prices
Use GPT · Gemini · Claude models with one key. LLM API (resale) is the original model unchanged; RIDM Memory is the same model with per-user memory (call it with the ridm/ prefix; recalled past conversations count as input tokens). All rates are ₩ / 1M tokens.
| Model | LLM API (resale) | RIDM Memory |
|---|
For OpenAI models, when you repeatedly send the same opening text (1,024 tokens or more), input tokens cached upstream are billed at 30% of the input rate — check usage.prompt_tokens_details.cached_tokens in the response and cachedTokens in the usage log (cache hits follow the upstream policy). Google · Claude models are billed the full input rate. Rates may change with exchange rates and supplier prices.
Image generation
Each model, size and quality (resolution) has a fixed price per image. The table price × the number of images generated is deducted. See request parameters
Credit top-ups · Subscriptions
Pay a fixed monthly fee to get bonus credits; usage beyond that is pay-as-you-go.
- Access to every model
- Automatic payment with a saved card
- Credits roll over (valid for 1 year from the day they are added)
- Access to every model
- Automatic payment with a saved card
- Credits roll over (valid for 1 year from the day they are added)
- Access to every model
- Automatic payment with a saved card
- Credits roll over (valid for 1 year from the day they are added)
- Only what you use is deducted · valid for 1 year from the top-up date
- Start right away, no subscription
- Auto top-up — when your balance drops below a level you set, your saved card is charged the amount you chose (incl. VAT)
- Set a monthly maximum for auto top-ups · an email for every top-up · turn it off anytime
RIDM Apps hosting
Connect a GitHub repository and we build, deploy and publish it at <name>.ridm.ai. Every app gets its own PostgreSQL database.
Paid plan fees are deducted monthly from your credits (prices shown are excl. VAT; VAT is paid when you top up credits).
Cancellation takes effect at the end of the period already paid, and hosting fees already deducted for that month are not refunded (for refunds of remaining credits, see the refund policy below).
Deployment guide
Loading prices…
Sales payouts
The fee for sending what you sold through HRUM Payments to your payout account.
App build support
We help you build a web app (store bookings, consultations, an intro page and more). Scope and terms are set in the build contract (Terms of Service, Article 4 (Korean)). Full details are on One-stop app development.
What's included
- HRUM sign-up and console setup
- Choosing, buying and connecting a domain (domain fees separate)
- Card registration and plan guidance
- Booking and customer management setup, first copy and photos
- App store registration under your own name, done together (C With store)
- How to use the app once it's finished
| 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 |
| 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 | B Custom + store app packaging | 1,700,000 KRW |
10% VAT not included · hosting fees separate (pricing) · 2 rounds of revisions included · built on HRUM · store registration uses an account in your name
FAQ
Is the amount in the table what is actually deducted?
Yes. For calculation, reading and image generation products, the table amount is deducted per call (per image for images). AI readings and LLMs are charged at the token rate × the tokens actually used; you can see the amount for each request in costPoints in the response (costWon for image generation) and in the usage log. VAT is paid separately when you top up credits.
Do rates change when the exchange rate changes?
Yes. Resale prices adjust automatically with the USD ↔ KRW exchange rate. The default is 1 USD = 1,500 KRW.
Are there discounts for long-term contracts?
Contact us about the Enterprise plan to negotiate a custom discount.
What is the refund policy?
A top-up left completely unused within 7 days is refunded in full with no fee (withdrawal of the order). After that, you can request a refund of unused paid credits at any time (amounts already used are not refunded). Credits (including credits from subscriptions) can be used for 1 year from the day they are issued; paid credits that expire unused after 1 year are refunded in full if you apply within 5 years of payment. Free credits, such as sign-up and top-up bonuses, are not refundable and expire after 1 year. For the detailed rules, see Terms of Service, Articles 10 and 52 (Korean).