Terms of use

Updated on November 4, 2026. Courtesy translation: in case of any difference, the Portuguese version prevails.

1. What Espiral Atlas 3D is

It is a 3D atlas of human anatomy, with study entries for each structure, quizzes and reference tools, made for health-care students. It is maintained by Lucas, an individual, who is responsible for this service (contact: lucasxtrabalhox@gmail.com).

2. Account

To sign in, you need to create an account with an email and password, or sign in with Google. You are responsible for keeping your password secret and for everything that happens in your account. The account is personal and cannot be shared. The service is intended for people over 18; people under 18 may only use it with the authorization of a parent or guardian.

3. Free access and full access

Without paying, and even without creating an account, you use the demo version: the 3D skeletal system (bones, joints and teeth), with the entries and clinical correlations of those structures, and, when you arrive from a public page of a structure, the 3D piece of that structure. Full access is unlocked by payment, in one of three plans: 10 days (R$ 19.90, 10 days of access), monthly (R$ 29.90, 30 days) and yearly (R$ 149.90, 365 days). There is no automatic renewal or recurring charge: when the period ends, the account goes back to the demo, and you pay again only if you want to. A new payment made before the end adds its period to what is still left. Prices may change; the price shown at the time of payment applies.

Updates. All subscriptions, of any plan, receive the Atlas updates published during the contracted period, in real time and at no extra cost. For those who bought the lifetime plan (sold until October 29, 2026), "lifetime" means for the whole useful life of Espiral Atlas, that is, for as long as the service is online; if it is ever shut down, we will give advance notice. We do not promise any specific feature, only access to the content and to the improvements published.

4. Payment

Payment (Pix, card or another method that the payment page offers) is processed by Asaas. Card and Pix details are entered on the Asaas page and do not pass through the Atlas. Access is unlocked after Asaas confirms the payment. When the payment page offers installments on the card (yearly plan), the installments and their charges are handled by Asaas and the card issuer.

5. Withdrawal and refund

Because this is a purchase made over the internet, you may withdraw within 7 days after payment and get the amount back, as provided in article 49 of the Brazilian Consumer Defense Code. Ask by email at lucasxtrabalhox@gmail.com, with the email of your account. When a payment is refunded, the period that corresponds to it (10, 30 or 365 days, or lifetime access) is removed from the account.

6. Permitted use

Access is personal, for your own study. You may not: share your account or your access; copy, bulk download, resell or redistribute the 3D models, the entries or other Atlas content; use robots or programs to extract the content; reverse engineer, decompile or try to obtain the source code of the application; try to get around the access protection or overload the service. Anyone who does so may have the account suspended or closed, with no refund for the period already used.

7. Educational content, not clinical

The content is for study. It is not for diagnosing, treating or deciding the management of patients and does not replace textbooks, classes or the judgment of a professional. The entries cite the sources used. Despite the care taken, there may be errors or inaccuracies, and some information may be marked for checking. If you find something wrong, let us know at lucasxtrabalhox@gmail.com.

8. Intellectual property and legal protection

The application (source code and published code), the screen design, the organization of the content, the texts of the entries, the clinical correlations, the quizzes and the «Espiral Atlas» brand belong to the maintainer. They are protected by Brazilian law, in particular the Software Law (Law No. 9,609/1998), the Copyright Law (Law No. 9,610/1998) and the Industrial Property Law (Law No. 9,279/1996), which also punishes unfair competition, as well as by the international copyright treaties to which Brazil is a party. This protection exists from creation and does not depend on registration. The authorship and date of each part are documented in the project version history.

Without written authorization from the maintainer, it is forbidden to copy, reproduce, adapt, reverse engineer or use the Atlas, in whole or in part (code, content, design or features), to create, train or promote a similar or competing product or service. This also applies to companies, institutions and people who learned about the project in presentations, meetings, proposals or trials. Anyone who violates these rights is liable under civil and criminal law, and the maintainer will take the appropriate judicial and extrajudicial measures, including claims for damages and for removal of the material.

Parts of the material (such as base 3D models and images) come from open projects and third parties, with their own licenses, and are credited in the Atlas itself. Those licenses remain in force for that material.

9. Availability

The service is offered as is. We do our best to keep it online, but there may be interruptions for maintenance or because of failures of third-party services, with no guarantee of continuous operation. If a long interruption prevents use during your paid period, write to lucasxtrabalhox@gmail.com so we can agree on compensation.

10. Termination

You may stop using it whenever you want and ask for the account to be deleted (see the Privacy Policy). The maintainer may close accounts that violate these terms.

11. Changes and governing law

The terms may change. The version in force is the one on this page, with the update date at the top. Important changes will be announced by email. These terms follow the laws of Brazil, and any dispute may be taken to the courts of your place of residence, as guaranteed by the Consumer Defense Code.

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