Leach Inc. Officially Releases 'Saturn', an AI-Powered Table-Based Automation Platform ── Reinventing Excel
Leach Inc. released 'Saturn', an AI automation platform that operates like a spreadsheet, automating data transcription and system integrations without coding.
📋 Article Processing Timeline
- 📰 Published: April 24, 2026 at 19:20
- 🔍 Collected: April 24, 2026 at 11:01
- 🤖 AI Analyzed: April 25, 2026 at 02:47 (15h 45m after Collected)
Leach Inc. (Headquarters: Minato-ku, Tokyo; CEO: Takuya Tominaga) officially released 'Saturn', an AI-powered table-based business automation platform, on April 24, 2026.
Saturn (saturn.leach.co.jp) — An AI-powered table-based automation platform that reinvents Excel.
What is Saturn ── An AI platform that achieves 'business automation with the feel of a spreadsheet.'
Saturn is a business automation platform developed under the concept of 'Reinventing Excel.' By simply arranging columns from left to right on a familiar spreadsheet screen, the business flow is completed, and the AI automatically handles everything from acquiring order data to creating invoices.
You can start using it immediately just by selecting a template, and no development or system configuration by engineers is required. There is no need to ask the internal IT department or hire an external vendor. It is a tool that accounting staff can configure and operate themselves.
Background of Development ── The 'transcription hell' remaining in SME operations
Many companies continue to manually copy and paste data in flows where orders are received in COREC and invoices are created in freee. Taking 3 minutes per item, 100 items take 5 hours. Many accounting staff members are overwhelmed by this task at the end of the month.
In Japanese SMEs, the adoption rate of ERPs remains low, and data integration between business systems mostly relies on manual work. Adopting iPaaS (Integration Platform as a Service) or RPA requires IT knowledge and scenario design skills, leaving SMEs with 'no IT experts' unable to utilize them.
CEO Tominaga, after working as an AI/infrastructure engineer at Toshiba for 9 years (being the first at Toshiba to acquire all 12 AWS certifications), discovered the existence of staff spending 8 hours a day transcribing from COREC to freee while supporting over 40 companies with a generative AI advisory service, which led to the development of Saturn.
Key Features
1. Fully automated integration from COREC to freee: Acquires COREC order data and automatically generates freee invoice data. By just pressing the 'Execute' button, 100 invoices are created in minutes. Item names, quantities, unit prices, tax rates, and client information are all transcribed automatically, reducing the transcription error rate to zero.
2. Automatic matching by AI: The AI automatically cross-references clients registered in freee. It accurately links notational variants and abbreviations like 'Co., Ltd.' and '(Inc.)'. Matching rules learned by the AI during the first execution are automatically saved, enabling even higher precision matching from the second time onwards.
3. Immediate start with templates: You can start using it without any configuration just by selecting from 18 types of templates, including the 'COREC to freee integration'. The templates span 5 categories: accounting, sales, recruiting, inquiry handling, and marketing, covering frequent business patterns in SMEs.
4. No-code mapping: The AI automatically interprets differences in item names between different systems. It automatically links discrepancies like 'Order Date' and 'Date of Order', or 'Item Number' and 'Product Code'. No complex mapping settings or API knowledge is required at all.
5. Visualization per cell: The AI's processing details are displayed cell by cell, making it easy to check and correct the output. It places importance on a design where humans can verify 'what the AI did' rather than being a black box.
6. Built-in data of 6 million companies from public DBs: Comes standard with corporate information for about 6 million companies from public databases like EDINET and gBizINFO. Just by entering the company name, detailed information such as the representative's name, location, industry, and sales scale are automatically acquired.
Difference from General-Purpose AIs ── Covering areas where ChatGPT and Claude struggle
While general-purpose AIs like ChatGPT and Claude are versatile, they are not good at batch processing of business data, data accumulation, and integration with external services. Saturn complements this area.
To clarify the specific differences, general-purpose AIs are good at 'answering questions one by one', but they cannot handle processes like 'inputting data for 100 companies at once and automatically filling all columns'. Additionally, the processing results flow into the chat log, making it impossible to search, filter, or sort them later. Since Saturn accumulates data in a spreadsheet format, the processing results remain as an asset.
Furthermore, general-purpose AIs have limitations in direct integration with external services.
Saturn is natively integrated with 14 services including COREC, freee, Gmail, Slack, and LINE, and can automate the entire flow of 'acquiring data → processing with AI → sending to another service'.
Supported Use Cases
Accounting: COR
Saturn (saturn.leach.co.jp) — An AI-powered table-based automation platform that reinvents Excel.
What is Saturn ── An AI platform that achieves 'business automation with the feel of a spreadsheet.'
Saturn is a business automation platform developed under the concept of 'Reinventing Excel.' By simply arranging columns from left to right on a familiar spreadsheet screen, the business flow is completed, and the AI automatically handles everything from acquiring order data to creating invoices.
You can start using it immediately just by selecting a template, and no development or system configuration by engineers is required. There is no need to ask the internal IT department or hire an external vendor. It is a tool that accounting staff can configure and operate themselves.
Background of Development ── The 'transcription hell' remaining in SME operations
Many companies continue to manually copy and paste data in flows where orders are received in COREC and invoices are created in freee. Taking 3 minutes per item, 100 items take 5 hours. Many accounting staff members are overwhelmed by this task at the end of the month.
In Japanese SMEs, the adoption rate of ERPs remains low, and data integration between business systems mostly relies on manual work. Adopting iPaaS (Integration Platform as a Service) or RPA requires IT knowledge and scenario design skills, leaving SMEs with 'no IT experts' unable to utilize them.
CEO Tominaga, after working as an AI/infrastructure engineer at Toshiba for 9 years (being the first at Toshiba to acquire all 12 AWS certifications), discovered the existence of staff spending 8 hours a day transcribing from COREC to freee while supporting over 40 companies with a generative AI advisory service, which led to the development of Saturn.
Key Features
1. Fully automated integration from COREC to freee: Acquires COREC order data and automatically generates freee invoice data. By just pressing the 'Execute' button, 100 invoices are created in minutes. Item names, quantities, unit prices, tax rates, and client information are all transcribed automatically, reducing the transcription error rate to zero.
2. Automatic matching by AI: The AI automatically cross-references clients registered in freee. It accurately links notational variants and abbreviations like 'Co., Ltd.' and '(Inc.)'. Matching rules learned by the AI during the first execution are automatically saved, enabling even higher precision matching from the second time onwards.
3. Immediate start with templates: You can start using it without any configuration just by selecting from 18 types of templates, including the 'COREC to freee integration'. The templates span 5 categories: accounting, sales, recruiting, inquiry handling, and marketing, covering frequent business patterns in SMEs.
4. No-code mapping: The AI automatically interprets differences in item names between different systems. It automatically links discrepancies like 'Order Date' and 'Date of Order', or 'Item Number' and 'Product Code'. No complex mapping settings or API knowledge is required at all.
5. Visualization per cell: The AI's processing details are displayed cell by cell, making it easy to check and correct the output. It places importance on a design where humans can verify 'what the AI did' rather than being a black box.
6. Built-in data of 6 million companies from public DBs: Comes standard with corporate information for about 6 million companies from public databases like EDINET and gBizINFO. Just by entering the company name, detailed information such as the representative's name, location, industry, and sales scale are automatically acquired.
Difference from General-Purpose AIs ── Covering areas where ChatGPT and Claude struggle
While general-purpose AIs like ChatGPT and Claude are versatile, they are not good at batch processing of business data, data accumulation, and integration with external services. Saturn complements this area.
To clarify the specific differences, general-purpose AIs are good at 'answering questions one by one', but they cannot handle processes like 'inputting data for 100 companies at once and automatically filling all columns'. Additionally, the processing results flow into the chat log, making it impossible to search, filter, or sort them later. Since Saturn accumulates data in a spreadsheet format, the processing results remain as an asset.
Furthermore, general-purpose AIs have limitations in direct integration with external services.
Saturn is natively integrated with 14 services including COREC, freee, Gmail, Slack, and LINE, and can automate the entire flow of 'acquiring data → processing with AI → sending to another service'.
Supported Use Cases
Accounting: COR