Terms of Service

By accessing or using Keisan (the “Service”), operated by Jishu Labs LLC, you agree to be bound by these Terms of Service. If you do not agree, please do not use the Service. These terms apply to all visitors, users and others who access or use the Service.

Keisan is an AI project estimation platform. You describe a project in plain English and Keisan turns it into an itemized cost and timeline estimate built from your rate cards, with line items, rates, totals, scenarios, margin and proposals you can export or share for approval. The Service is available as a web application at keisan.jishulabs.com.

• You must provide a valid email address and create a password to use the Service.
• You are responsible for keeping your account credentials secure.
• You must not share your account with others or allow unauthorized access.
• You must be at least 13 years of age to use the Service.
• You agree to provide accurate and complete information when creating your account.

The Free plan lets you generate itemized estimates with a default rate card and core scenario modeling, within usage limits we may set. Pro is billed at $15 per month through Stripe and includes unlimited estimates, custom rate cards, full scenario and margin modeling, proposal and PDF export, and saved projects. Subscriptions renew automatically until cancelled; you can cancel at any time and keep access until the end of the current billing period. We may change pricing or usage limits with reasonable notice. Abuse of the Free plan, such as creating several accounts to get around its limits, may lead to suspension.

You agree to use the Service in line with our Acceptable Use Policy. In particular, you agree not to:

• Use the Service to violate any applicable law or regulation
• Attempt to reverse-engineer, decompile or disassemble the Service
• Submit briefs intended to generate harmful, abusive or unlawful content
• Bypass rate limits, quotas, authentication or security controls
• Use automated tools to access the Service beyond normal use
• Interfere with or disrupt the integrity or performance of the Service

You keep all rights to the briefs you submit and to the estimates Keisan builds for you. Keisan does not claim ownership of your briefs or your estimates, and you are free to use, change and share them. The Service itself, including its design, features and branding, is the intellectual property of Jishu Labs LLC.

Estimates Keisan generates are provided “as is.” Review them before you rely on them for a quote or a commitment. You are responsible for checking line items, rates, totals and timelines against your own requirements. Jishu Labs LLC is not liable for issues that come from relying on AI-generated estimates without review.

Your use of the Service is also governed by our Privacy Policy. By using the Service, you consent to the collection and use of data as described there.

We work to keep the Service available but do not guarantee uninterrupted access. It may be unavailable for maintenance, updates or reasons beyond our control, and we will make reasonable efforts to give notice of planned downtime. The parts of the Service and how to report a problem are on the status page.

To the maximum extent permitted by law, Jishu Labs LLC shall not be liable for any indirect, incidental, special, consequential or punitive damages resulting from your use of the Service. Our total liability for any claim arising from these terms shall not exceed the amount you paid for the Service in the twelve months before the claim.

We may suspend or end your access to the Service at any time for violations of these terms. You may stop using the Service and delete your data from settings at any time. On termination, your right to use the Service ends immediately.

We may change these terms. Material changes will be announced by email or by a clear notice in the Service. Continuing to use the Service after a change means you accept the changed terms.

Questions about these terms can go through the contact page or to admin@jishulabs.com.