Terms of Use
Effective Date: April 2026
Last Updated: April 16, 2026
1. Agreement and Service Description
These Terms of Use ("Terms") govern your use of ChiralCall, a chirality prediction service provided by Arroway Sciences ("we," "us," or "Company"). ChiralCall uses proprietary computational methods to predict the active enantiomer of chiral compounds, enabling faster drug discovery and optimization cycles.
By accessing or using ChiralCall, you agree to be bound by these Terms. If you do not agree with any provision, you may not use the service.
2. Permitted Use — Research and Drug Discovery Only
ChiralCall is provided exclusively as a research and drug discovery tool for medicinal chemists, computational chemists, agrochemical scientists, and contract research organizations conducting drug discovery programs. Predictions returned by ChiralCall are intended for research, optimization, and drug discovery applications only.
Predictions are NOT validated for and must NOT be used for:
- Clinical diagnosis or patient treatment decisions
- Regulatory submissions or drug approvals
- Commercial manufacturing decisions
- Binding scientific or commercial claims
All predictions must be independently verified experimentally before downstream use of any kind.
3. Pricing Tiers and Subscription Terms
ChiralCall offers the following subscription tiers:
Free Tier
10 predictions per month. No credit card required.
Founding Customer Tier
$9,995 per year, locked forever. Limited to first 10 customers. Rate lock is non-transferable and applies only to the original purchasing account. Includes unlimited predictions and all storage modes.
Standard Annual
$49,950 per year, billed annually. Includes unlimited predictions and all storage modes.
Academic
Free for verified academic users (.edu email or ORCID). Must cite ChiralCall in publications (see Section 8). Unlimited predictions and all storage modes.
Enterprise Stateless
Custom pricing. Dedicated API support, custom rate limits, and service-level agreements. Contact us for details.
4. Storage Modes
All ChiralCall predictions can be processed using one of three storage modes:
Stateless (Default)
SMILES and predictions are processed in memory, never written to disk, never logged, and not retained after the prediction is returned. No user dashboard history is created. This mode is compliant with strict data minimization and GDPR Article 5. Choose Stateless if you require zero data retention.
Store
SMILES and predictions are saved to your personal user dashboard for future reference, enabling you to build a searchable library of your predictions. All data is encrypted at rest (AES-256). You retain full ownership and may delete any or all stored predictions at any time.
Contribute
Combines Store (predictions saved to your dashboard) plus automatic anonymized contribution of the structural data (SMILES without metadata) to our validation sets. This helps improve ChiralCall's accuracy for the research community. You can opt out of specific contributions at any time.
5. API Access and Rate Limits
Paid tiers include API access via X-API-Key authentication. Standard tier API rate limits are 1,000 requests per day per API key. Founding Customer and Enterprise tiers receive higher limits. Free tier does not include API access.
You are responsible for safeguarding your API key. If your key is compromised, revoke it immediately from your account settings. Excessive or abusive use, including bulk scraping, may result in API suspension or account termination.
6. Intellectual Property
ChiralCall predictions, the underlying model, training data, and methodology are proprietary to Arroway Sciences. You may not attempt to reverse engineer, decompile, disassemble, or reconstruct the prediction method or training data.
You own the rights to any experimental or structural data you input. By using the Contribute storage mode, you grant us a non-exclusive, royalty-free license to use anonymized structural data for model improvement and validation.
7. No Warranty and Limitation of Liability
ChiralCall is provided "AS IS" without warranty of any kind, express or implied, including warranties of merchantability, fitness for a particular purpose, or non-infringement. We make no guarantee that predictions will be accurate for any specific compound or chemical family.
TO THE MAXIMUM EXTENT PERMITTED BY LAW, ARROWAY SCIENCES SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING FROM USE OF CHIRALCALL, INCLUDING LOSS OF DATA, BUSINESS INTERRUPTION, OR FAILED PREDICTIONS.
Our total liability for any claim arising under these Terms shall not exceed the amount you paid for ChiralCall in the 12 months preceding the claim.
8. Academic Use and Citation Requirements
All academic users, including those on the free tier, must cite ChiralCall in any published work that uses our predictions. The required citation format is:
"ChiralCall, Arroway Sciences, www.chiralcall.com"
A DOI and formal citation format will be provided upon request. Failure to cite ChiralCall may result in loss of academic tier access.
9. Founding Customer Special Terms
Founding Customer pricing is locked permanently at $9,995 per year, even if pricing increases. This rate is non-transferable: it applies only to the original account holder and cannot be transferred to other users, organizations, or accounts.
Founding Customer accounts include a 30-day money-back guarantee from the date of purchase. After 30 days, no refunds are issued except in cases of material service failure. Founding Customer status is terminated if the account is deleted or transferred.
10. Service Modifications and Discontinuation
We reserve the right to modify, suspend, or discontinue any part of ChiralCall at any time with 30 days' notice. Chemical family coverage, confidence thresholds, accuracy metrics, and validation statistics may be updated as new benchmark data becomes available.
Paid tier subscribers will receive email notification of any breaking changes or discontinuation. In the event of discontinuation, we will provide data export tools and a 90-day wind-down period.
11. Account Termination
We may terminate or suspend your account immediately and without notice if you:
- Violate these Terms or our Acceptable Use Policy
- Attempt to reverse engineer or scrape the service
- Use ChiralCall for clinical or regulatory purposes
- Use ChiralCall for commercial manufacturing decisions
- Engage in fraudulent activity or abuse
Upon termination, your access to stored predictions and API keys will be revoked. You may request data export within 30 days of termination.
12. Dispute Resolution and Governing Law
These Terms and your use of ChiralCall shall be governed by the laws of the State of California, without regard to conflict-of-law principles. You agree to submit to the exclusive jurisdiction of the state and federal courts located in San Francisco County, California.
Prior to initiating legal proceedings, you agree to attempt resolution through good-faith negotiation with our legal team at legal@arrowaysci.com.
13. Acceptance and Changes to Terms
Your use of ChiralCall indicates acceptance of these Terms. We may update these Terms at any time. Continued use of the service after changes constitute acceptance of the updated Terms. We will notify paid subscribers of material changes at least 30 days in advance.
14. Contact
For questions about these Terms, please contact us at:
Arroway Sciences
legal@arrowaysci.com