COREC to freee Integration: Complete Guide to Automating Your Workflow

“We use COREC for orders and freee for accounting, but there’s no direct link…”

If you’re manually transferring data between these two systems, you’re not alone. This guide covers all the ways to connect COREC and freee, from manual methods to AI-powered automation.

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The COREC-freee Integration Challenge

What is COREC?

COREC is a popular order management system for Japanese SMBs.

Feature	Description
Order management	Track customer orders
Quote creation	Generate professional quotes
Delivery tracking	Monitor shipments
Customer database	Manage contacts

What is freee?

freee is Japan’s leading cloud accounting software.

Feature	Description
Bookkeeping	Double-entry accounting
Invoicing	Create and send invoices
Tax filing	Corporate tax preparation
Banking	Bank account integration

The Problem

There is currently no official one-click direct integration to convert COREC orders into freee invoices.

Current State	Impact
No API connection	Manual work required
Different data formats	Reformatting needed
Timing mismatch	Delays in invoicing

As a result, many businesses end up manually transcribing data, which becomes a significant burden during month-end closing.

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Method 1: CSV Import/Export (Manual)

This is currently the most common method.

Process

Step	Action	Time
1	Export from COREC	5 min
2	Open in Excel	1 min
3	Reformat columns	15 min
4	Check for errors	10 min
5	Upload to freee	5 min
6	Verify import	10 min
Total	Per batch	~45 min

Detailed Steps

Step 1: Export from COREC

Download order data as a CSV file from COREC’s export function.

Step 2: Reformat for freee

Use Excel to reorder columns and adjust fields to match freee’s import format.

COREC Field	freee Field	Conversion Needed
Order Date	取引日	Format change
Customer	取引先	Direct copy
Product	品目	May need adjustment
Amount	金額	Direct copy
Tax	税区分	Code conversion

Step 3: Upload to freee

Import the processed file through freee’s manual upload feature.

Evaluation

Criteria	Rating	Notes
Cost	◎ Free	No additional tools
Time	× High	45+ min per batch
Accuracy	△ Medium	Human error possible
Scalability	× Poor	Doesn’t scale

Pros: No additional cost. Cons: Time-consuming every month. High risk of data inconsistency due to manual processing.

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Method 2: Link via Third-Party Tools

A workaround is linking through intermediate platforms.

Option A: COREC → Square → freee

Step	Connection	Method
1	COREC → Square	Manual or Zapier
2	Square → freee	Official integration

Pros: Smooth if you already use Square for retail sales. Cons: Complex for pure B2B businesses.

Option B: COREC → Zapier → freee

Step	Action
1	Set up COREC trigger
2	Configure data mapping
3	Connect to freee action

Pros: Flexible customization. Cons: Monthly Zapier cost ($20-100+).

Option C: COREC → Make.com → freee

Similar to Zapier but with different pricing.

Factor	Zapier	Make.com
Ease of use	Higher	Medium
Cost for low volume	Lower	Lower
Cost for high volume	Higher	Lower

Evaluation of Third-Party Tools

Criteria	Rating	Notes
Cost	△ Medium	$20-100+/month
Time	○ Low	After setup
Accuracy	○ Good	Data flows automatically
Scalability	○ Good	Handles volume
Setup	× Hard	Technical knowledge needed

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Method 3: AI Automation with Totsugo (Recommended)

With the AI agent “Totsugo,” you can achieve direct data integration between COREC and freee without any coding.

How It Works

Step	What Happens	Your Action
1	Totsugo receives order data	Upload or connect
2	AI analyzes content	Automatic
3	Draft created in freee	Automatic
4	You review and approve	Hit Enter

How It Eliminates Transcription

Totsugo reads order emails or API data directly from COREC.

Feature	Description
AI Content Recognition	Instantly analyzes items, prices, quantities, tax rates
Auto-Draft in freee	Creates invoice draft without manual entry
One-Click Approval	Review and hit “Approve” to finish

Why Choose Totsugo for COREC Integration?

Benefit	Description	Impact
Zero Processing	No Excel reformatting	Save 45 min/batch
Zero Errors	No manual entry mistakes	Eliminate rework
Real-Time	Drafts created as orders arrive	Faster invoicing
No Coding	Set up without developers	Start today

Evaluation

Criteria	Rating	Notes
Cost	○ Medium	Subscription fee
Time	◎ Very Low	Minutes per month
Accuracy	◎ High	AI + human review
Scalability	◎ Excellent	Handles any volume
Setup	◎ Easy	Same-day start

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Comparison of All Methods

Method	Cost	Time	Accuracy	Ease
CSV Manual	Free	High	Medium	Easy
Third-Party	Medium	Low	Good	Hard
AI (Totsugo)	Medium	Very Low	High	Easy

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ROI Calculation

For a business processing 50 orders per month:

Before: CSV Method

Item	Value
Time per batch	45 min
Batches per month	4
Monthly time	3 hours
Error rate	2%
Rework time	1 hour
Total monthly time	4 hours

After: AI Method

Item	Value
Review time	15 min
Error rate	<0.1%
Total monthly time	15 min

Savings

Metric	Improvement
Time saved	3.75 hours/month
Annual time saved	45 hours
Error reduction	95%+

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Frequently Asked Questions

Q. Does COREC have an API?

A. COREC offers API access for some plans. Totsugo can connect via API or email forwarding.

Q. Can I use this with freee Deals (freee取引)?

A. Yes. Totsugo creates draft transactions or invoices based on your preference.

Q. What if my COREC data has custom fields?

A. AI understands custom fields and maps them appropriately.

Q. Is my data secure?

A. All data is encrypted in transit and at rest, deleted after processing.

Q. How long does setup take?

A. Most users are running within 30 minutes.

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Summary

While an official direct link between COREC and freee is missing, AI provides a solution that is even more convenient than a standard integration.

Approach	Effort	Result
Wait for official integration	None	Unknown timeline
Build custom integration	High	Expensive
Use AI automation	Low	Start today

If you spend hours on CSV processing or worry about transcription errors, it’s time to try the next generation of automation with an AI agent.

👉 Try COREC-freee Automation