Agreement and eligibility
These terms apply to viviflow.studio, viviflow.studio, supported Viviflow apps, and related account, support, and subscription services operated by Youkho Corp.
By creating an account, using Viviflow, or purchasing a subscription or credit pack, you agree to these terms. You must be at least 13. A person under the age of legal majority may use or purchase Viviflow only with the permission and authorization required from a parent or legal guardian.
Your account
Use an address you control and complete required verification. You are responsible for protecting access to that account and for activity under it. Tell us promptly if you believe someone has accessed it without permission.
We may suspend or restrict access when reasonably necessary for security, suspected fraud, nonpayment, abuse, or legal compliance.
License and acceptable use
We grant you a limited, personal, nonexclusive, nontransferable, revocable license to use Viviflow for lawful purposes while you comply with these terms.
You may not interfere with the service, bypass access or security controls, violate another person’s rights, submit unlawful or malicious content, reverse engineer the service except where law permits, resell access without permission, or use automated methods to overload or abuse the service.
Your content and backup
You keep ownership of content you enter. You give us a limited right to store, synchronize, process, and transmit it only as needed to provide requested features, protect the service, provide support, and comply with law. You are responsible for having the right to submit it.
Eligible signed-in content may synchronize to a private account-backed partition. Device-only or unsupported material may not restore. Keep an independent copy of anything you cannot afford to lose.
AI-generated information
Viviflow uses generative AI to work with user-selected context. Generated facts, transcriptions, summaries, analysis, audio, presentations, and suggestions may be incomplete, inaccurate, or unsuitable for your situation.
Viviflow does not provide legal, medical, financial, mental-health, or other professional advice. Review outputs and consult a qualified professional when appropriate. You remain responsible for your decisions and actions.
Free access and paid plans
Free access currently includes 100 user-added objects across all boards and 300 credits. AI-created objects do not count toward the object limit. Web subscriptions currently include Starter at $8 per month with 800 included credits and 1,000 user-added board objects; Creator at $20 per month with 2,000 included credits and 10,000 user-added board objects; Pro at $100 per month with 10,000 included credits and unlimited user-added board objects.
The Free credit allowance does not reset. Web-plan credits reset each billing period and unused included credits do not roll over. App Store products can have different prices and periods. The exact localized price, period, included features, and offer eligibility appear before purchase.
Included and purchased credits
Credits are closed-loop service units used only for eligible model-powered features provided directly by Youkho Corp through Viviflow, and only by the account that purchased or received them. They are not currency, a bank account, a deposit, or a payment instrument. They cannot be sold, gifted, transferred between accounts, used to pay another person or business, or redeemed for cash except where applicable law requires otherwise.
When credit-pack purchases are available, the U.S. packs are 500 credits for $5, 1,000 credits for $10, 2,000 credits for $20, 5,000 credits for $50, 10,000 credits for $100, 25,000 credits for $250, 50,000 credits for $500, 100,000 credits for $1,000. An active paid Starter, Creator, or Pro subscription, a verified Viviflow account, and a verified email are required. The purchased-credit balance is limited to 100,000 credits. The exact pack, price, currency, and any applicable tax are shown before purchase; taxes do not purchase additional credits.
A credit-pack purchase is a one-time purchase and does not renew automatically. Credits are added after server verification of the payment. The product shows the credit cost before an eligible action; unless stated otherwise, credits are deducted only when the requested action completes. Pack-price changes apply to future purchases. Changes to action costs may apply to an existing balance after their effective date, but do not change deductions already completed. We provide notice of material changes when required by law.
Purchased credits do not expire while the purchasing account remains open, and no inactivity fee applies. They are separate from the Free allowance and subscription-included credits described above. Buying a credit pack does not provide a subscription or increase the object allowance. Canceling a subscription does not refund or expire purchased credits.
Except where applicable law provides otherwise, credit purchases are final after delivery. Contact Viviflow support about a duplicate charge, billing error, or refund request. An approved refund may be limited to unused purchased credits, is returned to the original payment method where possible, and removes the corresponding credits. Promotional credits have no refund value. Refunds and withdrawn dispute funds remove the corresponding credits; reinstated dispute funds restore them. If the credits were already used, the balance may become negative. Future credit purchases first offset that deficit, and credit-funded features may be restricted until it is resolved.
Before requesting account deletion, use remaining purchased credits or contact support about an eligible refund. We may require unused credits and pending credit purchases to be resolved before an in-product deletion request completes; this does not limit an account-deletion right required by law. Credits cannot be transferred to another account. We may retain transaction records as described in the account-deletion section.
Payment, renewal, cancellation, and refunds
Supported web purchases are processed by Stripe and App Store purchases by Apple. Except for an eligible trial, payment is charged when you confirm. Paid subscriptions renew automatically for the selected period until canceled.
Cancel through the provider where you subscribed. Cancellation normally stops future renewal and leaves access active through the paid period shown by that provider. Refund rights vary by provider and region; rights that cannot lawfully be excluded remain unchanged.
Local data, account deletion, and subscriptions
Deleting local data removes the copy on that device. It does not delete the account, remove every account-backed copy, cancel a subscription, or automatically remove content you chose to share.
Account deletion removes the account and private sync partition, subject to limited transaction, tax, chargeback, trial-enforcement, security, fraud-prevention, dispute, and legal records. Viviflow cancels an active Stripe subscription during web account deletion so it will not renew, but deletion does not itself create a refund. Apple subscriptions are controlled by Apple and continue until you cancel them in your Apple Account.
Availability and changes
We may add, change, limit, suspend, or discontinue features and impose reasonable usage limits. We do not guarantee that Viviflow, AI processing, synchronization, or third-party billing services will always be uninterrupted, error-free, or available on every device.
Viviflow intellectual property
Except for your content and third-party materials, Viviflow’s software, original design, branding, text, and service materials belong to Youkho Corp or its licensors. These terms do not transfer those rights to you.
Disclaimers and limits
Viviflow and related services are provided on an “as available” basis. To the fullest extent permitted by law, Youkho Corp disclaims implied warranties relating to uninterrupted availability, accuracy, merchantability, fitness for a particular purpose, and noninfringement.
To the fullest extent permitted by law, Youkho Corp will not be liable for indirect, incidental, special, consequential, exemplary, or punitive damages, or for lost profits, data, goodwill, or opportunities. Nothing here limits rights or liability that cannot lawfully be limited.
Changes and contact
We may update these terms as Viviflow evolves. The updated date on this page shows the latest revision, and we will provide additional notice when required.
Visit viviflow.studio/support or email Viviflow support with questions.