Weight Management System 4.0
Welcome to Weight Management System 4.0 (hereinafter “the Platform,” “we,” “us,” or “our”), an online coaching platform offering personalised weight management services, nutritional guidance, and health tracking tools to users worldwide, including users located in the European Union and the European Economic Area.
This Privacy Policy explains how we collect, use, store, share, and protect your personal data when you access or use our Platform, in accordance with Regulation (EU) 2016/679 of the European Parliament and of the Council (the General Data Protection Regulation, “GDPR”), in particular Articles 13 and 14 thereof.
This Policy applies to all personal data collected:
By using the Platform, you acknowledge that you have read and understood this Privacy Policy. If you do not agree with any part of this Policy, please do not use our services.
For the purposes of the GDPR, the entity responsible for your personal data — the Data Controller — is:
Company: Weight Management System 4.0 Co., Ltd.
Address: 99 Lang Ha, Dong Da, Hanoi, Vietnam
Registration: Business Registration No. ., issued by ., Vietnam
Email: info@24k.agency
Phone: +84 93 253 8888
Website: https://24k.agency
As a company established outside the EU that offers services to individuals in the EU, we have appointed an EU Representative pursuant to Article 27 GDPR:
Name:.
Address:.
Email: info@24k.agency
Phone:.
We have appointed a Data Protection Officer (DPO) to oversee compliance with applicable data protection laws:
Name: Pham Minh Huy
Email: info@24k.agency
Postal: 99 Lang Ha, Dong Da, Hanoi, Vietnam
| Category | Examples of Data | Mandatory / Optional |
|---|---|---|
| Identity Data | Full name, date of birth, gender | Mandatory |
| Contact Data | Email address, phone number, country of residence | Mandatory (email); Optional (phone) |
| Health & Body Data Special Category | Body weight, height, BMI, target weight, dietary restrictions, physical activity level | Mandatory for core services |
| Account Credentials | Username, hashed password | Mandatory |
| Progress & Coaching Data | Weight logs, meal plans, exercise records, coach messages, progress photos (if uploaded) | Optional |
| Payment Data | Billing name, country, last 4 digits of card (processed by payment processor) | Mandatory for paid tiers |
| Communication Data | Customer support messages, survey responses, feedback | Optional |
| Category | Examples of Data |
|---|---|
| Usage Data | Pages visited, features used, session duration, click patterns |
| Device & Technical Data | IP address, browser type, operating system, device identifiers |
| Location Data | Country-level location derived from IP address |
| Cookie Data | Session cookies, analytics cookies (see Section 10) |
Where applicable, we may receive personal data from the following sources:
We process your personal data only for specific, explicit, and legitimate purposes. The table below details each processing activity, its purpose, and the corresponding legal basis under Article 6 GDPR.
| Purpose of Processing | Description | Legal Basis (Art. 6 GDPR) |
|---|---|---|
| Account Registration & Authentication | Creating and managing your user account, verifying identity, enabling login | Art. 6(1)(b) – Contractual necessity |
| Service Delivery | Providing personalised coaching, weight tracking, meal plans, and progress analysis | Art. 6(1)(b) – Contractual necessity |
| Health Programme Personalisation | Tailoring recommendations based on your health and weight data | Art. 6(1)(a) – Explicit consent; Art. 9(2)(a) – for health data |
| Payment Processing | Billing for premium subscriptions, issuing invoices, processing refunds | Art. 6(1)(b) – Contractual necessity |
| Customer Support | Responding to enquiries, resolving complaints, providing technical assistance | Art. 6(1)(b) – Contractual necessity; Art. 6(1)(f) – Legitimate interests |
| Safety & Medical Alerts | Detecting anomalies in health data that may indicate a medical risk | Art. 6(1)(d) – Vital interests; Art. 9(2)(c) – for health data |
| Analytics & Platform Improvement | Aggregated, anonymised analysis to improve features and user experience | Art. 6(1)(f) – Legitimate interests |
| Marketing & Newsletters | Sending promotional emails, product updates (opt-in only) | Art. 6(1)(a) – Consent |
| Legal Compliance | Complying with tax, accounting, and regulatory obligations | Art. 6(1)(c) – Legal obligation |
We process this data exclusively on the basis of your explicit consent (Article 9(2)(a) GDPR), obtained at the point of registration. You may withdraw this consent at any time; however, withdrawal will prevent us from providing personalised coaching services.
| Data Category | Retention Period | Basis |
|---|---|---|
| Account & Identity Data | Duration of account + 2 years after closure | Contractual necessity, legal obligations |
| Health & Body Data | Duration of active subscription + 12 months | Consent; deleted upon withdrawal |
| Payment Records | 7 years from transaction date | Tax and accounting obligations (Art. 6(1)(c)) |
| Usage & Analytics Data | 26 months (anonymised after 13 months) | Legitimate interests |
| Support Communications | 3 years from resolution | Legitimate interests (dispute resolution) |
| Marketing Consent Records | Until consent is withdrawn + 1 year | Compliance with consent obligations |
| Cookie Data | As specified in Cookie Policy (max. 13 months) | ePrivacy Directive / consent |
We do not sell your personal data. We may share your data with the following categories of recipients, strictly on a need-to-know basis and under binding contractual obligations:
| Recipient | Purpose | Safeguards |
|---|---|---|
| Coaching Staff | Providing personalised coaching services | Confidentiality agreements, role-based access |
| Payment Processors (e.g., Stripe, PayPal) | Processing subscription payments | PCI-DSS compliant; Data Processing Agreement |
| Cloud Infrastructure (e.g., AWS, Google Cloud) | Hosting and data storage | Standard Contractual Clauses (SCCs) |
| Analytics Providers (e.g., Google Analytics) | Platform usage analytics | Data anonymisation; DPA in place |
| Email Service Providers | Transactional and marketing emails | Data Processing Agreement |
| Legal / Regulatory Authorities | Compliance with court orders or legal obligations | Only as required by applicable law |
As our Platform operates globally with servers that may be located outside the EU/EEA, your personal data may be transferred to countries that do not provide the same level of data protection as the EU.
In all such cases, we ensure appropriate safeguards are in place, including:
You may request a copy of the applicable transfer safeguards by contacting us at info@24k.agency.
Under the GDPR, you have the following rights with respect to your personal data. We will respond to all verified requests within one (1) month (extendable by two months for complex requests).
Request a copy of all personal data we hold about you, along with information on how it is processed.
Request correction of inaccurate or incomplete personal data without undue delay.
Request deletion of your personal data (“right to be forgotten”) in certain circumstances.
Request that we restrict processing of your data while a dispute is being resolved.
Receive your personal data in a structured, machine-readable format (JSON/CSV) for transfer to another provider.
Object to processing based on legitimate interests or direct marketing at any time.
Withdraw consent for any processing activity based on consent, at any time, without affecting prior processing.
Lodge a complaint with your local EU supervisory authority if you believe your rights have been violated.
Our Platform uses automated processing (including AI-assisted recommendations) to generate personalised nutrition plans, fitness goals, and progress insights. This constitutes profiling within the meaning of Article 22 GDPR.
We use cookies and similar tracking technologies on our Platform. A separate Cookie Policy details all cookies used, their purposes, and your consent options. Below is a summary:
| Cookie Type | Purpose | Consent Required |
|---|---|---|
| Strictly Necessary | Session management, security, login persistence | No (legitimate interest) |
| Functional | Language preferences, UI settings | No (legitimate interest) |
| Analytics | Google Analytics — anonymised usage statistics | Yes (opt-in) |
| Marketing | Retargeting, conversion tracking | Yes (opt-in) |
You may manage your cookie preferences at any time via the Cookie Settings link in the website footer.
Our Platform is intended for users aged 18 and over. We do not knowingly collect personal data from children under the age of 16 (or the applicable age of digital consent in your Member State, which may be lower).
If we become aware that we have collected personal data from a child without verifiable parental consent, we will delete such data immediately. If you believe we hold data from a child, please contact info@24k.agency.
We implement appropriate technical and organisational measures to protect your personal data against unauthorised access, accidental loss, destruction, or disclosure:
We may update this Privacy Policy from time to time to reflect changes in our processing activities, applicable law, or platform features. We will notify you of material changes by:
Continued use of the Platform after the effective date of any update constitutes your acceptance of the revised Policy.
For any questions, concerns, or requests relating to this Privacy Policy or our data processing activities, please contact us:
Email: info@24k.agency
DPO Email: info@24k.agency
Post: 99 Lang Ha, Dong Da, Hanoi, Vietnam — marked “Privacy / GDPR”
Response Time: Within 72 hours for general queries; 30 days for formal GDPR requests
If you are located in the EU/EEA and believe we have not handled your personal data in accordance with applicable law, you have the right to lodge a complaint with your local data protection supervisory authority:
Weight Management System 4.0 — Privacy Policy v1.0
Effective: April 09, 2026 | Last updated: April 09, 2026
This document was prepared in accordance with GDPR (EU) 2016/679, Articles 13 & 14. This policy does not constitute legal advice. For specific legal guidance, consult a qualified EU data protection lawyer.