I. COMPANY IDENTIFICATION AND PURPOSE
EVOLFY S.A. DE C.V., located at Avenida Insurgentes Sur No. 605, 8th Floor, Interior 802, Colonia Nápoles, Alcaldía Benito Juárez, C.P. 03810, Mexico City, is the entity responsible for operating the website https://pystacklabs.com/ (hereinafter, the “Site”), through which it markets and provides mobile and web application design and development services (hereinafter, the “Services”).
These terms and conditions (hereinafter, the “Terms”) govern access, navigation, and use of the Site, as well as the contracting of Services by any user (hereinafter, the “Client”). By accessing the Site or contracting any of the Services, the Client expressly, voluntarily, and irrevocably accepts all the terms herein, as well as the Privacy Notice available on the Site. If the Client does not agree with any provision, they must refrain from accessing, navigating, or contracting services on the Site.
II. DESCRIPTION OF SERVICES AND AVAILABLE PACKAGES
PYSTACK’s Services consist of a set of predefined packages, each with specific scope, functionalities, deliverables, and prices, available on the Site. The main packages include:
Additionally, PYSTACK offers the option of customized services, tailored to the Client’s specific needs, subject to a separate commercial proposal and explicit approval by both parties.
Each package includes a detailed description, number of screens, workflow, review rounds, deliverables, estimated timelines, and price. This information is available on the Site and may be modified by PYSTACK at any time without prior notice.
III. PRICES, PAYMENT METHODS, AND TAXES
3.1 Price Structure
All Service and package prices are expressed in Mexican Pesos (MXN) and published on the Site. The current Value Added Tax (VAT) in Mexico is 16%, which will be added to the total invoice amount payable by the Client.
The total amount to be paid is the sum of the package base price plus the applicable VAT (16%). PYSTACK will provide a clear breakdown of the base amount, VAT, and total before processing payment.
3.2 Accepted Payment Methods
PYSTACK accepts:
The Client is responsible for verifying payment method availability, applicable fees by banks or payment gateways, and any additional costs that may arise.
3.3 Payment Validation and Confirmation
The Service is considered effectively contracted only when payment is validated and confirmed by PYSTACK and/or the corresponding bank or payment gateway. Until payment is confirmed, PYSTACK will not begin Service execution.
Once payment is validated, PYSTACK will send a confirmation email to the Client, including purchase details, estimated delivery schedule, specific package conditions, and contact information for follow-up.
3.4 Price Changes and Promotions
PYSTACK reserves the right to modify Service and package prices at any time. Changes take effect upon publication on the Site. Promotions, discounts, or special offers are subject to availability and apply only during the specified period. Clients are responsible for verifying the current conditions at the time of contracting.
IV. CONTRACTING PROCESS AND CLIENT ELIGIBILITY
4.1 Eligibility
To contract PYSTACK’s Services, the Client must:
4.2 Client Registration and Information
To contract Services, the Client must provide complete, truthful, accurate, and updated information via the Site’s registration or contact form, including:
The Client must keep their information updated and notify PYSTACK of any changes. Accuracy of information is the Client’s responsibility. PYSTACK may request additional documentation, perform verifications, or conduct checks to confirm Client identity and comply with legal obligations.
4.3 Package Selection and Contracting
V. SITE USAGE CONDITIONS
5.1 Authorized Use
The Client may access and navigate the Site only for legal purposes and in accordance with these Terms. The Client agrees to use the Site responsibly, respecting third-party rights, Mexican law, and applicable international standards.
5.2 Restrictions
The Client must refrain from:
VI. SERVICE EXECUTION, DELIVERY, AND REVIEW
6.1 Schedule and Phases
Upon payment confirmation, PYSTACK executes the Service according to the package scope and schedule, notifying the Client of:
PYSTACK will use best efforts to meet timelines; however, delays due to force majeure, technical impossibility, delayed Client responses, or circumstances beyond PYSTACK’s control are not attributable to PYSTACK.
6.2 Review and Adjustments
Each package includes a specific number of review rounds. Adjustment requests must be submitted in writing via PYSTACK’s contact email. Changes beyond the package scope require a separate quotation and approval.
6.3 Acceptance of Deliverables
Acceptance of final deliverables indicates Client approval. Post-acceptance claims will only be considered for evident defects under the applicable Warranty Policy.
6.4 Suspension or Termination Causes
PYSTACK may suspend or terminate Services in cases of:
In case of suspension due to Client fault, PYSTACK may retain deliverables with no refund.
VII. INTELLECTUAL PROPERTY AND COPYRIGHT
7.1 PYSTACK Ownership
All Site content—including texts, images, logos, sketches, wireframes, prototypes, code, illustrations, style guides, animations, production files, and other materials—is the exclusive property of EVOLFY S.A. DE C.V. or used under license.
7.2 Client Rights
The Client acquires no intellectual property rights through Site access or Service contracting. The Client receives a limited, non-exclusive, revocable license to use deliverables internally and non-commercially. Transfer of rights for customized services must be expressly agreed in writing and subject to full payment.
7.3 Prohibitions
The Client may not:
Violations may result in civil and criminal legal action and compensation claims.
7.4 Third-Party Rights
The Client agrees to respect third-party intellectual property included in Services or the Site and guarantees submitted content does not infringe third-party rights.
VIII. CLIENT OBLIGATIONS AND RESPONSIBILITIES
8.1 General Obligations
The Client must:
8.2 Content Responsibility
The Client is solely responsible for the content, data, or materials provided and must ensure they do not violate laws or third-party rights. PYSTACK is not responsible for the legality, accuracy, or completeness of Client-provided materials.
8.3 Indemnification
The Client agrees to indemnify and hold PYSTACK harmless from any claims, damages, costs, or legal fees arising from:
IX. WARRANTIES AND LIMITATION OF LIABILITY
9.1 Disclaimer of Warranties
PYSTACK does not guarantee that:
Services are provided “as is” and “as available.” The Client assumes all risks from Site access and Service use.
9.2 Limitation of Liability
PYSTACK is not liable for:
9.3 Liability Cap
PYSTACK’s total liability will not exceed the amount paid by the Client for the Service in the 12 months preceding the claim. If no payment was made, liability is zero.
9.4 Technical Responsibility
The Client is responsible for:
X. MODIFICATIONS TO TERMS
PYSTACK may modify, update, or remove any part of these Terms at any time without notice. Changes take effect upon publication. Continued use of the Site or contracting Services implies acceptance.
XI. GENERAL PROVISIONS
11.1 Validity
Terms are effective indefinitely until a newer version is published.
11.2 Headings
Section headings are for reference only and do not affect interpretation.
11.3 Partial Invalidity
If any provision is invalid or unenforceable, the remainder remains effective.
11.4 Relationship
These Terms do not create a partnership, franchise, employment, or agency. The Client acts as an independent party.
11.5 Legal Compliance
The Client guarantees compliance with applicable Mexican laws when using the Site or Services.
XII. JURISDICTION AND DISPUTE RESOLUTION
These Terms are governed by Mexican law, particularly laws in Mexico City. Parties submit to the jurisdiction of Mexico City courts, waiving any other jurisdiction.
Before judicial actions, parties agree to attempt resolution through:
XIII. CONTACT AND CUSTOMER SUPPORT
For questions, clarifications, complaints, or proposals:
PYSTACK will respond within a reasonable timeframe, typically 24–48 business hours.