Terms of Service

By accessing or using Keisan (the “Service”), operated by Jishu Labs, 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 your project in plain English and Keisan turns it into a defensible, itemized cost and timeline estimate using rate cards, including line items, rates, totals, phase breakdowns, and exports. 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 maintaining the security of your account credentials.
• 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 tier provides up to ten generated estimates per calendar month. Pro is billed at $15 per month through Stripe and includes unlimited estimate generation and all export formats. Usage limits reset on the first day of each month. Subscriptions renew automatically until cancelled; you can cancel at any time and retain access through the end of the current billing period. We reserve the right to modify pricing or usage limits with reasonable notice. Abuse of the free tier (such as creating multiple accounts to circumvent limits) may result in account 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 laws or regulations
• 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 excessively access the Service beyond normal usage
• Interfere with or disrupt the integrity or performance of the Service

You retain all ownership rights to the briefs you submit and to the estimates Keisan generates for you. Keisan does not claim ownership of your briefs or your generated estimates, and you are free to use, modify, and share them in your own projects. The Service itself — its design, features, templates, and branding — is the intellectual property of Jishu Labs.

The estimates Keisan generates are provided “as is” for your use. While we strive for accurate, defensible, itemized output, generated estimates should be reviewed before you rely on them for a quote or commitment. You are responsible for validating line items, rates, totals, and timelines against your own requirements. Keisan is not liable for any issues arising from reliance 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 strive to maintain high availability but do not guarantee uninterrupted access. The Service may be temporarily unavailable due to maintenance, updates, or circumstances beyond our control. We will make reasonable efforts to provide advance notice of planned downtime. Current status is published at our status page.

To the maximum extent permitted by law, Jishu Labs 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 claims arising from these terms shall not exceed the amount you paid for the Service in the twelve months preceding the claim.

We may suspend or terminate your access to the Service at any time for violations of these terms. You may delete your account at any time through Settings, which will permanently remove all your data. Upon termination, your right to use the Service ceases immediately.

We reserve the right to modify these terms at any time. Material changes will be communicated via email or prominent notice on the Service. Continued use of the Service after changes constitutes acceptance of the modified terms.

For questions about these Terms of Service, please visit our contact page or email hello@jishulabs.com.