These Terms of Service ("Terms") govern your access to and use of the Decidia decision-support application ("Service") provided by Radix Art Inc. ("Radix Art," "we," "us," or "our"). By creating an account or using the Service in any way, you agree to be bound by these Terms. If you do not agree, do not create an account or use the Service.
1 About the Service
Decidia is a personal decision-support application based on the Analytic Hierarchy Process (AHP), a structured methodology for organizing options and priorities. The Service helps you articulate your own priorities, compare alternatives against those priorities, and visualize weighted scores for your personal decisions.
Decidia is a thinking aid — it reflects the values and inputs you provide. It is not a source of professional advice. See Section 7 for important limitations.
2 Eligibility
You must be at least 13 years of age to use the Service.
If you are between 13 and 15 years old: By creating an account, you represent that your parent or legal guardian has reviewed these Terms and our Privacy Policy and consents to your use of the Service. If you are the parent or guardian of a user in this age range who created an account without your consent, please contact us at hello@decidia.app.
If you are 16 or older: By creating an account, you represent that you are at least 16 years of age and have the legal capacity to agree to these Terms under the laws of your jurisdiction.
If we become aware that a user is under the age of 13, we will immediately suspend the account and delete all associated data in accordance with our Privacy Policy.
If you are accessing the Service on behalf of a business or organization, you represent that you are authorized to bind that entity to these Terms, and "you" refers to that entity.
3 Account Registration and Security
3.1 Accurate Information
You agree to provide accurate, current, and complete information when creating your account, and to keep that information up to date.
3.2 Account Security
You are responsible for maintaining the confidentiality of your login credentials. You agree not to share your password with anyone and to notify us immediately at hello@decidia.app if you suspect unauthorized access to your account. You are responsible for all activity that occurs under your account.
3.3 One Account Per Person
Accounts are for individual use only. You may not create multiple accounts or share access to your account with others to circumvent plan limits or for any other purpose.
4 Subscription Plans and Billing
4.1 Available Plans
| Plan | Price | Limits |
|---|---|---|
| Free | $0 | 2 active decisions · 15 criteria · 8 alternatives |
| Monthly Premium | $7.00 / month | 50 decisions · 30 criteria · 20 alternatives |
| Annual Premium | $39.00 / year | 50 decisions · 30 criteria · 20 alternatives |
Current plan features and limits are described on our Pricing page and may be updated with notice as described in Section 4.6.
4.2 Free Trial
New Premium subscribers receive a 7-day free trial. No charge is made during the trial period. If you do not cancel before the trial period ends, your payment method will be charged for the applicable Premium plan on the day the trial expires. You may cancel at any time during the trial at no charge.
4.3 Automatic Renewal
Subscriptions renew automatically at the end of each billing period until canceled. By subscribing, you authorize Radix Art Inc. (through our payment processor, Polar.sh) to charge your payment method on each renewal date.
4.4 Cancellation
You may cancel your subscription at any time through your account settings. Cancellation takes effect at the end of your current paid billing period. You will retain access to Premium features until the end of the period for which you have already paid.
4.5 No Refunds
All subscription fees are non-refundable. We do not provide refunds or credits for partial billing periods, unused portions of a subscription, or plan downgrades.
Exception for EU/EEA consumers: If you are a consumer located in the European Union or European Economic Area and you have not used the Service after subscribing (i.e., you have not logged in or accessed any paid features), you may have a statutory right of withdrawal within 14 days of purchase under applicable EU consumer law. To exercise this right, contact us at hello@decidia.app within 14 days of your initial purchase. This right does not apply once you have begun using the paid Service.
If you have a billing concern, please contact us at hello@decidia.app and we will make reasonable efforts to assist.
4.6 Price Changes
We reserve the right to change our subscription prices. We will provide at least 30 days' advance notice of any price increase via email or in-app notice. Your continued use of the Service after a price change takes effect constitutes your acceptance of the new price.
4.7 Taxes
Stated prices exclude applicable taxes unless noted otherwise. You are responsible for all taxes, duties, or charges imposed in your jurisdiction in connection with your subscription.
4.8 Chargebacks and Payment Disputes
If you initiate a chargeback or dispute a Decidia subscription charge with your bank or credit card issuer, your account access may be immediately suspended upon notification of the dispute, regardless of whether the chargeback has been resolved. Radix Art Inc. is not liable for any loss of access to the Service or your data during a suspension resulting from a chargeback.
If a chargeback is determined to be fraudulent or made in bad faith, Radix Art Inc. reserves the right to permanently terminate your account and recover any fees incurred as a result of the dispute, including payment processor chargeback fees.
If you believe a charge was made in error, please contact us at hello@decidia.app before initiating a chargeback. We will make reasonable efforts to resolve billing disputes promptly and in good faith.
5 Acceptable Use
You agree to use the Service only for lawful purposes and in accordance with these Terms. You agree not to:
- Use the Service for any unlawful purpose or in violation of any applicable local, state, national, or international law
- Attempt to gain unauthorized access to any portion of the Service, its systems, or networks
- Reverse engineer, decompile, disassemble, or attempt to derive the source code or underlying algorithms of the Service
- Use automated scripts, bots, crawlers, or scraping tools to access or collect data from the Service
- Introduce viruses, malware, or any harmful code into the Service
- Interfere with or disrupt the integrity or performance of the Service or its underlying infrastructure
- Circumvent any feature restrictions, usage limits, or access controls
- Impersonate any person or entity, or falsely represent your affiliation with any person or entity
- Use the Service in any manner that could expose Radix Art Inc. to legal liability or reputational harm
We reserve the right to investigate suspected violations and to terminate or suspend access, at our sole discretion, for any violation of these restrictions.
6 User Content
6.1 Your Ownership
You retain full ownership of all decisions, criteria, priorities, alternatives, notes, and other content you create within the Service ("User Content"). Nothing in these Terms transfers ownership of your User Content to Radix Art Inc.
6.2 License Grant
By using the Service, you grant Radix Art Inc. a limited, non-exclusive, non-transferable license to store, process, and display your User Content solely as necessary to provide the Service to you. This license terminates when you delete the relevant content or close your account, subject to the data retention period in our Privacy Policy.
6.3 Your Responsibility
You are solely responsible for your User Content. You represent that your User Content does not violate any applicable law or infringe the rights of any third party.
6.4 No Monitoring Obligation
We are not obligated to monitor User Content but reserve the right to remove content that violates these Terms or applicable law.
7 Informational Purpose Only — Not Professional Advice
This section is important. Please read it carefully.
7.1 Nature of the Service
Decidia is a personal decision-support tool that provides a structured framework for organizing and visualizing your own thinking about choices. The Service is provided for informational and personal productivity purposes only.
7.2 Not a Substitute for Professional Advice
Decidia does not provide professional, licensed, or expert advice of any kind. You should not rely on the Service as a substitute for advice from a qualified professional. Specifically:
- Financial matters: Decidia is not a registered investment advisor, financial planner, or broker-dealer. Nothing produced by the Service constitutes investment advice, financial planning advice, or a recommendation to purchase, sell, or hold any security or financial instrument. For financial decisions, consult a licensed financial professional.
- Medical and health matters: Decidia is not a healthcare provider, therapist, or medical professional. Nothing produced by the Service constitutes medical advice, a clinical diagnosis, or a treatment recommendation. For health-related decisions, consult a qualified healthcare professional.
- Legal matters: Decidia is not a law firm and does not provide legal advice or representation. Nothing produced by the Service constitutes legal counsel or creates an attorney-client relationship. For legal matters, consult a licensed attorney.
- All other professional matters: The Service does not replace the judgment of any other licensed, credentialed, or qualified professional in any domain.
7.3 Results Reflect Your Own Inputs
The scores, rankings, and outputs produced by Decidia are mathematical calculations based entirely on the priorities, weights, and scores that you assign. The Service does not independently verify, assess, or validate the accuracy of your inputs, the suitability of your alternatives, or the appropriateness of the resulting output for your specific situation.
7.4 You Are Responsible for Your Decisions
You are solely and exclusively responsible for any decision you make, whether or not the Service was part of your deliberation process. Radix Art Inc. expressly disclaims all liability for any outcome — including financial loss, adverse health outcomes, legal consequences, relationship impacts, or any other harm — arising from any action or inaction you take following your use of the Service.
8 Intellectual Property
8.1 Our Property
The Service and all its components — including the Decidia and Radix Art Inc. names and logos, software, code, design, user interface, visual elements, written content, and the implementation of the AHP methodology within the Service — are the exclusive property of Radix Art Inc. and are protected by copyright, trademark, trade secret, and other applicable intellectual property laws.
8.2 Limited License to You
Subject to these Terms, we grant you a limited, non-exclusive, non-transferable, revocable license to access and use the Service for your personal, non-commercial use only.
8.3 No Implied Rights
Nothing in these Terms grants you any rights in the Service beyond the limited license described above. You may not reproduce, distribute, modify, create derivative works from, publicly display, sell, or commercially exploit any part of the Service without our prior written consent.
9 Third-Party Services
The Service integrates with third-party services including Google (for authentication), Polar.sh (for payments), and Supabase (for infrastructure). Your use of those services is governed by their own terms and privacy policies. Radix Art Inc. is not responsible for the content, availability, privacy practices, or conduct of any third-party service.
10 Disclaimer of Warranties
THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE," WITHOUT WARRANTY OF ANY KIND.
To the fullest extent permitted by applicable law, Radix Art Inc. disclaims all warranties, express or implied, including but not limited to:
- Implied warranties of merchantability, fitness for a particular purpose, title, and non-infringement
- Any warranty that the Service will be available, uninterrupted, timely, secure, or error-free
- Any warranty regarding the accuracy, reliability, completeness, or usefulness of any content or output produced by the Service
Some jurisdictions do not allow exclusion of implied warranties; in such jurisdictions the exclusions apply to the maximum extent permitted by law.
11 Limitation of Liability
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW:
(a) Radix Art Inc., its directors, officers, employees, agents, partners, and licensors shall not be liable for any indirect, incidental, special, consequential, exemplary, or punitive damages, including but not limited to loss of profits, revenue, data, goodwill, or business opportunities, arising out of or in connection with these Terms or your use of or inability to use the Service.
(b) Radix Art Inc.'s total aggregate liability to you for any claim arising out of or relating to these Terms or the Service, regardless of the form of action, shall not exceed the greater of: (i) $50.00 USD or (ii) the total subscription fees you paid to Radix Art Inc. in the twelve (12) months immediately preceding the event giving rise to the claim.
(c) These limitations apply regardless of the legal theory on which the claim is based (contract, tort, negligence, strict liability, or otherwise) and even if Radix Art Inc. has been advised of the possibility of such damages.
Some jurisdictions do not permit certain damage exclusions or liability caps. In such jurisdictions, our liability is limited to the maximum extent permitted by law.
12 Indemnification
You agree to defend, indemnify, and hold harmless Radix Art Inc. and its officers, directors, employees, contractors, and agents from and against any claims, damages, liabilities, losses, and expenses (including reasonable attorneys' fees) arising out of or relating to: (a) your use of the Service; (b) your User Content; (c) your violation of these Terms; or (d) your violation of any applicable law or third-party right.
13 Termination
13.1 By You
You may close your account and terminate these Terms at any time through your account settings or by contacting us at hello@decidia.app. Termination does not entitle you to a refund of any paid subscription fees.
13.2 By Us
We reserve the right to suspend or permanently terminate your access to the Service, with or without prior notice, for: violations of these Terms; conduct we determine to be harmful to other users, to the Service, or to Radix Art Inc.; fraudulent, illegal, or abusive activity; or any other reason at our sole discretion.
13.3 Effect of Termination
Upon termination: your license to use the Service ends immediately; your User Content will be deleted in accordance with our Privacy Policy (within 90 days). Sections 6.4, 7, 8, 10, 11, 12, 14, and 15 survive termination and remain in full force.
13.4 Account Appeal Process
If your account has been suspended or terminated and you believe the action was taken in error or is otherwise unwarranted, you may submit an appeal by emailing hello@decidia.app with "Account Appeal" in the subject line.
Your appeal should include:
- The email address associated with your account
- A description of the circumstances you believe led to the suspension or termination
- Why you believe the action was taken in error or was unwarranted
We will review your appeal and respond within 10 business days. We may, at our sole discretion, reinstate accounts where we determine the suspension or termination was unwarranted.
Arbitration prerequisite: For any dispute arising from an account suspension or termination, submitting an appeal under this section constitutes the informal dispute resolution attempt required by Section 14.2. The 30-day informal resolution period in Section 14.2 begins on the date your appeal is received. You may not initiate arbitration proceedings for a suspension or termination dispute until either (a) 10 business days have elapsed without a response from us, or (b) our response does not resolve the dispute to your satisfaction.
14 Governing Law and Dispute Resolution
14.1 Governing Law
These Terms are governed by and construed in accordance with the laws of the State of California, United States, without regard to its conflict of law provisions.
14.2 Informal Resolution First
Before initiating any formal legal proceeding, you agree to contact us at hello@decidia.app describing the nature of your dispute and the relief you seek. Both parties agree to attempt in good faith to resolve the dispute informally within 30 days of notice.
14.3 Binding Arbitration
If informal resolution is unsuccessful, any dispute, claim, or controversy arising out of or related to these Terms or the Service (other than the exceptions listed in Section 14.5) shall be resolved exclusively by binding individual arbitration administered by the American Arbitration Association (AAA) under its Consumer Arbitration Rules. The arbitration shall take place in Marin County, California, or by video conference at either party's election.
14.4 Class Action Waiver
YOU AND RADIX ART INC. AGREE THAT ALL CLAIMS MUST BE BROUGHT IN AN INDIVIDUAL CAPACITY, AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY PURPORTED CLASS, COLLECTIVE, OR REPRESENTATIVE PROCEEDING. THE ARBITRATOR MAY NOT CONSOLIDATE CLAIMS OF MORE THAN ONE PERSON.
14.5 Exceptions
Notwithstanding Section 14.3, either party may pursue emergency injunctive or other equitable relief in any court of competent jurisdiction to prevent irreparable harm. Claims that qualify for small claims court may be brought in small claims court.
14.6 EU/EEA Users
If you are a consumer located in the EU/EEA, mandatory consumer protection laws of your country of residence apply and you may have additional rights, including access to the EU Online Dispute Resolution platform at https://ec.europa.eu/consumers/odr. Nothing in Section 14 limits those statutory rights.
15 General Provisions
15.1 Entire Agreement
These Terms, together with the Privacy Policy, constitute the entire agreement between you and Radix Art Inc. regarding the Service and supersede all prior agreements and understandings.
15.2 Severability
If any provision of these Terms is held invalid, illegal, or unenforceable, that provision shall be modified to the minimum extent necessary to make it enforceable, and the remaining provisions shall continue in full force and effect.
15.3 No Waiver
Our failure to enforce any right or provision of these Terms on one occasion shall not constitute a waiver of that right or provision going forward.
15.4 Assignment
You may not assign or transfer any rights or obligations under these Terms without our prior written consent. Radix Art Inc. may freely assign these Terms in connection with a merger, acquisition, or sale of assets.
15.5 Force Majeure
Radix Art Inc. is not liable for any failure or delay in performance caused by circumstances beyond our reasonable control, including acts of nature, war, terrorism, labor disputes, government actions, or internet or infrastructure failures.
16 Changes to These Terms
We may modify these Terms at any time. For material changes, we will provide at least 14 days' advance notice via email to your registered address and/or a prominent in-app notice. If you do not agree to the revised Terms, you must stop using the Service before the effective date. Your continued use of the Service after the effective date constitutes your acceptance of the revised Terms.
17 Contact
Questions about these Terms? Contact us: