Terms of service

01Acceptance of these terms

These terms are the agreement between you and Jiuzhang Arithmetic Studio (the “studio”, “we”) covering use of the TuMo Vision software and website. Downloading, installing, registering or using the product means you have read and accepted these terms and the privacy notice.

If you use the product on behalf of a company or team, you confirm that you are authorised to accept these terms for that organisation.

02Accounts and sign-in

Registration requires a real, usable username and email address, and you must keep your password safe. An account is for you or your team’s authorised users only; it may not be resold, shared or lent.

To protect accounts, only one device may hold an active session per account by default. Signing in on a new device ends the older session. Do not stay signed in on shared devices.

If you suspect your account has been misused, contact us immediately.

03Licence scope

Subject to these terms and a valid subscription, we grant you a non-exclusive, non-transferable licence to install and use the client on Windows devices to detect drawings and produce deliverables.

You may use exported ballooned drawings, Excel detail sheets and inspection reports for internal production and customer delivery. You may not reverse engineer, decompile, crack, bypass licensing or quota limits, remove proprietary notices, or resell the software or models as a standalone product.

04Free quota and metered cloud OCR

A new account receives 200 free detections to validate import, detection, OCR review and export. One full detection run on one drawing page counts as one detection; OCR review and export are not charged again.

Cloud OCR is metered in tokens, with limits that vary by plan; local detection consumes no tokens. Once a quota is exhausted, the relevant capability is unavailable until a membership is activated or the quota is reset.

05Membership, activation and expiry

Monthly membership is ¥49 per month and annual membership is ¥490 per year, at the price confirmed when activating. The website currently has no online checkout: after registering, contact us by phone, WeChat or email and we activate the membership after confirming the account and usage scale.

Membership starts on activation and reverts to the free plan at expiry. We try to remind you before expiry but cannot guarantee delivery of reminders. Renewal is your decision.

06Pricing, invoices and refunds

The price confirmed at activation applies; prices may change because of promotions or plan adjustments, and an already activated period is unaffected.

We can issue standard VAT invoices. As software is a virtual good, activated memberships are generally non-refundable; please validate the full workflow with the free quota first.

If a service failure caused by us leaves you unable to use the product for an extended period and cannot be fixed, we will discuss a pro-rata arrangement for the unused term.

07Acceptable use

• Do not upload or process drawings and data you have no right to handle; obtain the necessary authorisation first.
• Do not use the software for anything unlawful or to infringe intellectual property or trade secrets.
• Do not interfere with or attack the service, or bypass device, account or quota limits.
• Do not use cloud OCR to process content that is illegal to process.

If these rules are broken, we may suspend or terminate the relevant account and reserve the right to pursue further remedies.

08Data and privacy

We process your account information, device identifier, usage records and uploaded content as described in the privacy notice. Detection and export run locally by default; cloud OCR is called only when you choose it and is metered; whether drawings may be uploaded for training is controlled by a client setting and is off by default.

You are responsible for the content and legality of drawings you upload; we process them only to the extent required to provide the service.

09Availability and support

We maintain the website and cloud capabilities on an ongoing basis but do not promise uninterrupted service. Scheduled maintenance, network failures, third-party service issues or force majeure may cause short outages.

The client is local software: once installed it can detect and export offline. Sign-in, quota checks and cloud OCR require a network connection.

Support channels: phone, WeChat and email, Monday to Friday, 9:00 – 18:00 CST.

10Disclaimer and limitation of liability

Recognition results, OCR values and reports are generated by algorithms and may contain errors. They must be reviewed by qualified engineering or quality staff before use, and the final correctness of deliverables is the responsibility of the user.

To the extent permitted by law, we are not liable for indirect loss, loss of profit or loss of data. Our aggregate liability for the software and service will not exceed the fees you paid us in the preceding twelve months.

11Suspension and termination

You may stop using the product at any time and request account closure. If you breach these terms or a security or compliance risk arises, we may suspend or terminate the service and will explain why.

After termination we handle data as described in the privacy notice; local files you have exported remain in your possession.

12Changes to these terms

We may update these terms as features and policies evolve and will refresh the “last updated” date on this page. Significant changes are announced on the site or in the client. Continued use after the change takes effect means acceptance.

13Governing law and disputes

These terms are concluded, performed and interpreted under the laws of the People’s Republic of China. Disputes arising from these terms should first be resolved through friendly negotiation; if that fails, either party may bring the matter before a court with jurisdiction.

14Contact us

For questions about licensing, invoices, contracts or these terms, reach us by email, phone or WeChat using the details at the bottom of this page.