Terms of Service

These Terms of Service (“Terms”) are a binding agreement between you and Nine23 Works LLC (“Nine23”, “we”, “us”), the operator of stems.pro. By creating an account or using the service on any platform — web, iOS, or desktop — you agree to these Terms and to our Privacy Policy. If you do not agree, do not use the service.

stems.pro lets you upload audio recordings, separate them into instrument stems (vocals, drums, bass, and others) using AI processing, apply pitch and analysis processing, store the resulting files, and play them back with real-time mixing. The service is a tool that processes the audio you provide; it does not supply music or other content to you.

• You must provide accurate account information and keep it up to date.
• You must be at least 16 years old (or the minimum age required in your country) to use the service.
• You are responsible for safeguarding your credentials and for all activity under your account. Tell us immediately at support@stems.pro if you suspect unauthorized use.

Only upload content you own or are licensed to use. You represent that you have all rights necessary to upload and process every recording you submit. The service is a tool: you retain full ownership of your uploads and of the stems and other files derived from them.

You agree not to:

• Upload or process recordings whose rights you do not hold, or redistribute stems derived from other people’s copyrighted works.
• Use the service to infringe any third party’s intellectual property, privacy, or other rights, or for any unlawful purpose.
• Circumvent quotas, rate limits, or security measures, probe or disrupt the service, or resell access to it.
• Reverse engineer the service except where the law permits it despite this restriction.

Setlist sharing. Teams-plan subscribers can share setlists with members of their own performing team (for example, a band or worship team). When you share, you confirm that your rights to the audio cover your team members playing it back through the service. Shared access is for rehearsal and performance by your team only — it is not a way to distribute audio to the public, and team members may not re-share, export, or redistribute audio they receive. stems.pro is a player for content you provide; it is not a source of licensed music.

We may remove content or suspend accounts that violate this section. See our Copyright Policy for how copyright complaints are handled.

• Plans. We offer a free Starter plan and paid Pro and Teams subscriptions, billed monthly or yearly through Stripe. Plan features and current prices are shown on our pricing page.
• Auto-renewal. Paid subscriptions renew automatically at the end of each billing period until cancelled.
• Cancellation. You can cancel anytime through the billing portal in the app. Cancellation takes effect at the end of the current billing period; you keep paid features until then. Except where required by law, fees already paid are non-refundable.
• Plan changes. When you switch plans, unused time on your current plan is credited pro rata toward the new plan.
• Credit packs. One-time credit packs are non-refundable except as required by law. Bonus credits do not expire while your account remains open.
• Price changes. Our subscription and credit prices may change over time. For recurring subscriptions we will give you reasonable advance notice (for example, by email or in-app) before a price increase takes effect, and the new price applies from your next billing period. If you do not agree to a new price, you may cancel before it takes effect; continuing to use a paid plan after the change takes effect constitutes acceptance of the new price. Introductory, promotional, or discounted prices are temporary and revert to the then-current standard price when the promotion ends.
• Taxes. Prices may exclude taxes, which are calculated at checkout where applicable.

Each plan includes a storage quota and a number of song splits. Quotas exist to keep the service fast and affordable for everyone. We may throttle or restrict usage that substantially exceeds the patterns the plans are designed for (for example, automated bulk processing or using the service as generic file storage), and will contact you before taking action where reasonably possible.

We work hard to keep the service reliable, but it is provided without an uptime guarantee. Maintenance, updates, or events beyond our control may interrupt the service. We recommend keeping local copies of your original recordings.

The service itself — including its software, design, audio processing technology, and branding — belongs to Nine23 and its licensors. These Terms do not grant you any rights in it except the right to use the service as intended.

Your content stays yours. You grant us a limited, worldwide, non-exclusive license to host, store, reproduce, process, and transmit your uploads and derived files solely to operate and provide the service to you — including delivering audio you choose to share to the team members you designate. This license ends when you delete the content or your account, except for transient copies in backups that expire on a rolling schedule.

We respond to copyright infringement notices under the Digital Millennium Copyright Act. To file a notice or a counter-notice, see our Copyright / DMCA Policy.

You may stop using the service and delete your account at any time from Settings. We may suspend or terminate your account if you materially breach these Terms, if required by law, or — consistent with our Copyright Policy — if you are a repeat infringer. On termination, your right to use the service ends and your content is deleted per the retention terms in our Privacy Policy. Sections that by their nature should survive (including ownership, disclaimers, and limitation of liability) survive termination.

The service is provided “as is” and “as available”, without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose, and non-infringement. AI stem separation is a best-effort process and results vary with the source material; we do not warrant any particular output quality.

To the maximum extent permitted by law, Nine23 will not be liable for indirect, incidental, special, consequential, or punitive damages, or for lost profits, revenues, data, or goodwill. Our total liability for all claims relating to the service is limited to the greater of the amounts you paid us in the 12 months before the claim arose or USD $50. Some jurisdictions do not allow certain limitations, so parts of this section may not apply to you.

You will indemnify and hold Nine23 harmless from claims arising out of content you upload in violation of Section 4, including claims that your uploads infringe a third party’s rights.

These Terms are governed by the laws of [Jurisdiction], without regard to conflict-of-law rules. Courts located in [Jurisdiction] have exclusive jurisdiction over disputes arising from these Terms, except where mandatory consumer protection law gives you the right to bring proceedings where you live.

We may update these Terms as the service evolves. For material changes we will give you advance notice by email or in-app notice. Continuing to use the service after changes take effect means you accept the updated Terms.

Questions about these Terms? Email support@stems.pro or, for legal matters, legal@stems.pro.