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Terms of Service

Last updated: September 12, 2026 · Version 2.0 · Changelog

1. Acceptance of Terms

Histriva ("the Service") is operated by Evenstride, Inc., a Delaware corporation ("Evenstride," "we," "us," or "our"). Evenstride, Inc. is the party you contract with under these Terms; Histriva is a product and brand owned by Evenstride, Inc.

By accessing or using the Service, you agree to be bound by these Terms of Service. If you do not agree to these terms, please do not use the Service. We may update these terms from time to time; material changes are governed by Section 15 (Changes to These Terms).

2. Description of Service

Histriva is a personal growth and habit tracking application that uses artificial intelligence to provide personalized habit recommendations across six life domains: Health, Career, Finance, Relationships, Mindset, and Purpose. The Service includes habit tracking, goal and milestone management, conversational AI coaching (Riva and six domain specialists), progress analytics, daily briefings, and related features.

3. Account Registration

  • You may sign up with a valid email address and a password, or by using a supported single-sign-on identity provider (currently Google).
  • You are responsible for maintaining the confidentiality of your account credentials.
  • You are responsible for all activity that occurs under your account.
  • You must notify us immediately of any unauthorized use of your account.
  • You must be at least 18 years of age to create an account.
  • You may close your account at any time from Settings. Account closure starts a 30-day grace period during which the account can be restored, after which identifying fields are anonymized and your data is removed in accordance with the Privacy Policy.

4. Acceptable Use

You agree not to:

  • Use the Service for any unlawful purpose
  • Attempt to gain unauthorized access to any part of the Service
  • Interfere with or disrupt the Service or its infrastructure
  • Use automated tools to scrape or extract data from the Service
  • Impersonate another person or misrepresent your affiliation
  • Upload malicious code or attempt to compromise the security of the Service

5. User Content

You retain ownership of all content you create within the Service, including habits, goals, and personal data. By using the Service, you grant us a limited license to process your content solely for the purpose of providing the Service to you (e.g., sending your goals to our AI provider to generate recommendations).

6. AI-Generated Content

The Service uses artificial intelligence to generate habit recommendations, insights, and motivational content. AI-generated content is provided for informational purposes only and should not be considered professional medical, financial, legal, or psychological advice. You use AI-generated recommendations at your own discretion and risk.

7. Service Availability

We strive to keep the Service available at all times but do not guarantee uninterrupted access. The Service may be temporarily unavailable due to maintenance, updates, or circumstances beyond our control. We reserve the right to modify, suspend, or discontinue any part of the Service at any time.

8. Plans, Subscriptions, and Billing

8.1 Plans

Histriva offers a Free plan and a paid Pro subscription. The features included in each plan, and the current price of Pro, are shown on our Pricing page and at checkout. Pro is available with monthly or annual billing.

8.2 Free trials and complimentary access

We may give your account Pro features at no charge for a limited time — for example, a free trial when you sign up, or complimentary access for beta testers. No payment method is required for a free trial or complimentary access, and neither one converts into a paid subscription. When it ends, your account moves to the Free plan unless you choose to subscribe to Pro. We will tell you before complimentary access ends.

8.3 Automatic renewal

When you subscribe to Pro, your subscription renews automatically at the end of each billing period — every month for monthly billing, every year for annual billing — and we charge the payment method on file the then-current Pro price, plus any applicable tax, until you cancel. The price, the billing period, and how to cancel are shown to you before you confirm your purchase.

8.4 How to cancel

You can cancel at any time, online, without contacting us: go to Settings → Billing → Manage subscription. You can also email support@histriva.com and we will cancel for you.

Cancellation stops future renewals. Your Pro access continues until the end of the billing period you have already paid for, and your account then moves to the Free plan. Your data is not deleted when you cancel.

8.5 Refunds

Payments are non-refundable, and we do not provide refunds or credits for partial billing periods, unused time, or moving from Pro to Free, except:

  • where a refund is required by applicable law; or
  • where we discontinue the Service, or terminate your account for a reason other than your breach of these Terms. In that case we will refund the unused portion of any prepaid subscription period.

If you believe you were charged in error, contact support@histriva.com and we will review it.

8.6 Price changes

We may change the price of Pro. We will notify you at least 30 days before a price change applies to your subscription, and the new price takes effect at the start of your next billing period after that notice. If you do not want to pay the new price, you can cancel before it takes effect, as described in Section 8.4.

8.7 Failed payments

If a renewal payment fails, we will attempt the charge again and notify you. Your Pro access continues for a short grace period while the payment is retried. If payment still has not succeeded when the grace period ends, your account moves to the Free plan until a payment succeeds.

8.8 Taxes and payment processing

Prices are in US dollars and do not include taxes. Applicable sales tax, VAT, or similar taxes are calculated and shown at checkout. Payments are processed by our payment provider, Stripe; we do not receive or store your full card number.

8.9 Deleting your account

Deleting your account cancels any active Pro subscription immediately, and no further charges are made. Because deletion is immediate, any remaining paid time is forfeited and is not refunded (Section 8.5). If you want to keep Pro until the end of your paid period, cancel your subscription first and delete your account afterwards.

9. Account Termination

You may delete your account at any time; see Section 8.9 for how this affects a paid subscription. We reserve the right to suspend or terminate accounts that violate these terms. If we terminate your account for a reason other than your breach of these Terms, we will refund the unused portion of any prepaid subscription period. Upon account deletion, your personal data will be removed from our active systems, though some data may persist in backups for a limited period.

10. Limitation of Liability

The Service is provided "as is" and "as available" without warranties of any kind, either express or implied. To the fullest extent permitted by law, Evenstride, Inc. shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising from your use of the Service, including but not limited to loss of data, loss of profits, or damages resulting from reliance on AI-generated content.

11. Indemnification

You agree to indemnify and hold harmless Evenstride, Inc., its officers, and its operators from any claims, damages, or expenses arising from your use of the Service, your violation of these terms, or your violation of any rights of a third party.

12. Governing Law and Disputes

Governing law. These Terms are governed by the laws of the State of Delaware, United States, without regard to its conflict-of-law rules.

Resolve it with us first. If you have a dispute with us, please email support@histriva.com with a description of the issue and what you are asking for. We will try in good faith to resolve it within 60 days, and we ask you to give us that chance before starting a formal proceeding. We will do the same for you.

Small claims. Either of us may bring an individual claim in a small claims court that has jurisdiction.

Courts. Otherwise, any dispute arising from these Terms or the Service will be resolved in the state or federal courts located in Delaware, and you and we consent to their jurisdiction.

Your consumer rights. Nothing in these Terms limits any mandatory consumer-protection right you have under the law of the place where you live, including any right to bring proceedings in your local courts.

13. AI Coaching Disclosure

Histriva uses artificial intelligence to provide personal growth coaching, habit suggestions, and domain-specific guidance. All AI-generated content is produced by automated systems, not licensed professionals.

Histriva is not a substitute for professional advice. The AI coaches are not licensed therapists, financial advisors, medical professionals, or counselors. If you are experiencing a mental health crisis, financial emergency, or medical concern, please contact the appropriate professional or emergency service immediately. For details on how we respond to crisis signals, moderate AI output, and handle safety information, see our Safety Policy.

Your conversations with AI coaches are stored to personalize your experience and improve recommendations over time. You can delete your conversation history at any time. AI responses are generated based on your habits, goals, and conversation context — they are not pre-written or reviewed by humans before delivery.

Histriva's AI may occasionally produce inaccurate or unhelpful suggestions. We continuously work to improve quality and safety, but cannot guarantee the accuracy of every response. You are encouraged to use your own judgment when acting on AI-generated coaching.

14. Age Requirement

You must be at least 18 years old to use Histriva. By creating an account, you confirm that you meet this age requirement.

15. Changes to These Terms

We may modify these Terms from time to time. For material changes — those that meaningfully affect your rights, the data we process, or how the Service works — we will provide advance notice by email and/or an in-product notice before the change takes effect, and we will update the "last updated" date and version at the top of this document (with a matching entry in our public policy changelog). Non-material changes (typos, formatting, clarifications that do not change meaning) take effect on posting. Your continued use of the Service after a change's effective date constitutes acceptance; if you do not agree to a change, you may close your account at any time from Settings.

16. Severability

If any provision of these Terms is held to be invalid, unlawful, or unenforceable, that provision will be limited or removed to the minimum extent necessary, and the remaining provisions will remain in full force and effect.

17. Entire Agreement

These Terms, together with the Privacy Policy and any other policies expressly referenced herein, constitute the entire agreement between you and Evenstride, Inc. regarding the Service and supersede any prior or contemporaneous agreements on that subject. Our failure to enforce any provision is not a waiver of our right to do so later.

18. Contact

For questions about these Terms of Service, please contact Evenstride, Inc. at support@histriva.com.

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