Pricing Plan Overview

1. The 4 Layers of a Pricing Plan

A pricing plan is defined by combining the following 4 hierarchical layers:

Layer	Role	Example Settings
Metering Unit	Counter for measuring usage	Number of comments / active users...
Measurement Unit	The smallest billing logic unit	Fixed / Usage-Based / Tiered / Tiered Usage
Feature Menu	A "feature package" bundling multiple units	Free Menu / Pro Menu, etc.
Pricing Plan	Top-level plan assigned to tenants	Free / Basic / Enterprise...

2. Measurement Units – 4 Billing Models

Type	Image	Main Use Cases
Fixed Unit	Fixed price such as 500 JPY per month	Monthly base fee, maintenance cost
Usage Unit	1 API request = 0.1 JPY	Simple pay-as-you-go
Tiered Unit	0–10 items = 500 JPY 11–50 items = 1,000 JPY etc.	Step-based pricing (like mobile data plans)
Tiered Usage Unit	0–10 items = 100 JPY/item 11–20 items = 90 JPY/item etc.	Volume discount pricing

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For detailed calculation patterns, see
The difference in rate calculation between Tiered units and Tiered usage units.

3. Relationship Between Meter Units and Measurement Units

Measurement Unit Type	Refers to Meter Unit	Typical Billing Logic
Fixed Unit	Does not refer	Fixed monthly fee
Usage Unit	Refers (one)	Usage × unit price
Tiered Unit	Refers (one)	Charge based on the fixed amount for the usage tier
Tiered Usage Unit	Refers (one)	Sum of (unit price × usage) for each tier

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Fixed Units do not refer to any meter unit.
Use this model to define flat fees unaffected by usage (e.g., 1,000 JPY/month).

4. Model Samples (Free / Basic / Enterprise)

Plan	Base Fee	Comment Count Billing
Free	0 JPY	Free up to 10 items
Basic	500 JPY	Tiered pricing 0–10 items = 500 JPY 11–50 items = 1,000 JPY 51–100 items = 1,500 JPY
Enterprise	0 JPY	Tiered usage-based 0–1,000 items = 50 JPY/item 1,001–5,000 items = 40 JPY/item 5,001〜 = 30 JPY/item

Free Plan Example

Basic Plan Example

Enterprise Plan Example