Terms of Service

These Terms of Service ("Terms") are a binding agreement between you and Goptimise ("Castiva", "we", "us"), the operator of the Castiva platform at this website (the "Service"). By creating an account, accessing, or using the Service you agree to these Terms. If you use the Service on behalf of a company or agency, you represent that you are authorized to bind that organization, and "you" refers to it.

If you do not agree to these Terms, do not use the Service.

Castiva is a social media management platform for agencies and businesses. It lets you connect social media accounts (such as Facebook, Instagram, YouTube, and TikTok), plan and schedule posts, publish content to connected accounts, generate content with artificial-intelligence tools (text, images, video, and voiceovers), store media, and view performance statistics.

We may add, change, or remove features at any time. We will not materially reduce the core functionality of a paid plan during a paid billing period without notice.

You must be at least 18 years old and able to form a binding contract to use the Service. You are responsible for your account credentials and for all activity under your account, including activity by team members you invite. Keep your password secure and notify us promptly at [email protected] of any unauthorized use.

You must provide accurate account information and keep it up to date. We may suspend or terminate accounts that provide false information or breach these Terms.

The Service is paid-only. Plans are billed through our payment processor, Stripe, on a recurring subscription basis at the prices shown at checkout. Some features are metered (for example AI-generated copy, images, videos, and voiceovers) and billed per generation in addition to the base subscription, at the rates shown on the pricing page or at checkout.

Subscriptions renew automatically until canceled. You can cancel or change your plan at any time via the billing page; cancellation takes effect at the end of the current billing period, and amounts already paid are non-refundable except where required by law. If a payment fails, we may retry it and may suspend paid functionality (including scheduled publishing and AI generation) until payment succeeds.

Plan limits (such as the number of client companies, connected channels, and team seats) apply as described for your plan. Prices may change; we will give you advance notice of price changes, which take effect at your next renewal.

You retain all rights to the content you upload to or create in the Service — media files, post text, brand assets, and prompts ("Customer Content"). You grant us a worldwide, non-exclusive license to host, process, transmit, and display Customer Content solely to operate and improve the Service, including delivering your posts to the social platforms you connect.

You are responsible for Customer Content. You represent that you have all necessary rights to it and that it does not infringe anyone's intellectual property, privacy, or other rights, and complies with applicable law and the rules of each platform you publish to.

The Service can generate text, images, video, and audio using third-party AI providers. AI output can be inaccurate, incomplete, or unintentionally similar to other content. You are responsible for reviewing AI-generated content before publishing it and for how you use it. To the extent permitted by law and by our AI providers' terms, we assign to you our rights, if any, in AI output generated for you; we make no warranty that AI output is original, accurate, or fit for a particular purpose.

When you connect a social account, you authorize Castiva to access and act on that account (for example reading statistics and publishing approved posts) using tokens granted by the platform. Your use of each platform remains governed by that platform's own terms — including the Meta Platform Terms, the YouTube Terms of Service, and the TikTok Terms of Service. Castiva uses YouTube API Services; by connecting a YouTube channel you also agree to be bound by the YouTube Terms of Service.

Platforms may change or revoke API access, rate-limit requests, or reject content, which can affect scheduled publishing; we are not responsible for platform-side failures, though we surface errors so you can retry. Castiva is not affiliated with, or endorsed by, Meta, Google/YouTube, or TikTok.

You agree not to use the Service to:

• publish content that is unlawful, defamatory, deceptive, hateful, or infringing;
• send spam or engage in coordinated inauthentic behavior on social platforms;
• violate the terms or content policies of any connected platform;
• probe, disrupt, or overload the Service, or attempt to access other tenants' data;
• resell or white-label the Service without our written agreement;
• use the Service to develop a competing product.

We may suspend or terminate accounts that violate this section.

The Service, including its software, design, and branding, is owned by us and our licensors and is protected by intellectual-property laws. These Terms grant you no rights in the Service other than the limited right to use it while your subscription is active.

The Service depends on third-party services — including Stripe (payments), cloud hosting and storage providers, and AI providers (such as Anthropic, fal.ai, and ElevenLabs). Their availability and terms are outside our control. See our Privacy Policy for how data is shared with them.

You may stop using the Service and cancel your subscription at any time. We may suspend or terminate your access immediately if you materially breach these Terms, if required by law, or if a platform partner requires it. Upon termination we will make your Customer Content available for export for a reasonable period unless legal or platform obligations require deletion.

The Service is provided "as is" and "as available". To the fullest extent permitted by law, we disclaim all warranties, express or implied, including merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the Service will be uninterrupted, error-free, or that scheduled posts will always publish (platform outages, revoked tokens, and rejected content can prevent publishing).

To the fullest extent permitted by law, neither party is liable for indirect, incidental, special, consequential, or punitive damages, or lost profits, revenue, or data. Our total liability for all claims arising out of or relating to the Service is limited to the amounts you paid us in the twelve (12) months before the event giving rise to the claim. Nothing in these Terms limits liability that cannot be limited by law.

You will indemnify and hold us harmless from claims arising out of Customer Content, your use of the Service in violation of these Terms, or your violation of platform rules or applicable law.

We may update these Terms from time to time. For material changes we will notify you (for example by email or an in-app notice) before they take effect. Continued use of the Service after the effective date constitutes acceptance of the updated Terms.

These Terms are governed by the laws of Romania, without regard to conflict-of-law rules, and disputes are subject to the courts of Romania, unless mandatory consumer law provides otherwise.

Questions about these Terms: [email protected].