Terms of Service

Welcome to LevelDoo, operated by Zhang He, an individual doing business under the laws of the People's Republic of China (“LevelDoo”, “we”, “us”). These Terms of Service (“Terms”) govern your access to and use of our AI-powered English-learning service — daily news rewritten at five CEFR levels (A1–C1) with vocabulary tools — available at https://leveldoo.com (the “Service”).

By creating an account, subscribing to a plan, purchasing credits, or otherwise using the Service, you confirm that: (a) you are at least 16 years old (or the age of digital consent in your jurisdiction); (b) you have read, understood, and agree to be bound by these Terms; (c) you agree to our Privacy Policy; and (d) you are authorized to accept these Terms for yourself or the organization you represent.

Important: if you do not agree to these Terms, stop using the Service. Continued use after updated Terms take effect constitutes acceptance of the revised Terms.

2.1 LevelDoo provides an AI-driven platform that regenerates daily news articles at five difficulty levels, with tap-to-translate vocabulary, spaced-repetition review, and learning progress tracking. The Service is a digital software-as-a-service (SaaS) product delivered over the internet.

2.2 The Service is a digital, intangible product. Access is granted immediately after payment confirmation. Because of this immediate delivery, refunds are subject to the specific limits in Section 7.

2.3 The Service uses third-party AI model providers, including Cloudflare Workers AI (Meta Llama family models). Performance and availability may be affected by the operational status of these providers; material outages will be communicated promptly.

3.1 Using the Service requires an account created with accurate and complete information. You are responsible for keeping your login credentials confidential and for all activity under your account.

• Report unauthorized use immediately to security@leveldoo.com.
• Do not share your login credentials with any third party.
• Keep your billing email address current and valid.

3.3 If you register on behalf of a company or organization, you represent that you are authorized to bind that entity to these Terms.

We offer subscription plans and credit packs. LevelDoo Pro is available monthly ($4.99 USD/month) or yearly ($39 USD/year) and unlocks unlimited articles across all levels plus a monthly grant of 200 AI credits. Separately purchasable credit packs (100 AI credits) can be topped up at any time. Current plans and pricing are at https://leveldoo.com/pricing.

5.1 Subscription auto-renewal authorization — by purchasing a paid plan you expressly authorize LevelDoo to charge your payment method each billing cycle until you cancel under Section 6.

5.2 Credit purchase authorization — each credit-pack purchase is a one-time transaction you authorize at checkout.

5.3 Taxes — prices shown exclude applicable taxes unless stated otherwise.

5.4 Payment processing — payments are processed by Waffo Pancake (merchant of record). Your card data is handled exclusively by this PCI-DSS-compliant processor and never reaches our servers. Charges appear on your statement as a Waffo descriptor.

You may cancel your subscription at any time via Settings → Subscription → Cancel inside the app, or by emailing billing@leveldoo.com. Cancellation takes effect at the end of the current billing period — you keep Pro access until then. Separately purchased credits are not cancelled and retain their validity.

7.1 Subscriptions:

• First-time subscribers: full refund within 7 days of first purchase.
• Duplicate charges or service outage exceeding 72 hours: refund or credit.

7.2 Credits:

• Credit packs unused within 7 days of purchase: full refund.
• Credits that have been consumed are non-refundable.

7.3 Subscription credits accumulate in a single balance with purchased credits. Credits have no cash value and are non-transferable. To request a refund, contact billing@leveldoo.com.

If you believe a charge is incorrect, email billing@leveldoo.com before filing a dispute with your bank. We commit to replying within 2 business days and resolving confirmed billing errors within 5 business days.

9.1 Articles are generated by AI from publicly available news feeds for educational purposes. AI-generated content may contain errors, omissions, or inaccuracies — it is a learning aid, not a news authority.

9.2 The Service, its software, design, and original content are our property. Your learning data (vocabulary, progress) belongs to you and can be exported at any time from Settings.

You may not:

• Scrape, bulk-download, or systematically extract Service content.
• Resell, sublicense, or commercially redistribute the Service or its content.
• Attempt to breach security, probe vulnerabilities, or disrupt the Service.
• Use the Service to infringe third-party intellectual-property or privacy rights.
• Abuse rate limits, create fraudulent accounts, or attempt to obtain unpaid access.

Your use of the Service is governed by our Privacy Policy. Payment card data is processed exclusively by our PCI-DSS-compliant payment processor (Waffo Pancake) and is never stored on our servers. Account data is retained for 90 days after deletion and then removed.

We may modify, suspend, or discontinue parts of the Service at any time. For material changes affecting paid users we will provide reasonable advance notice. We do not guarantee uninterrupted availability.

THE SERVICE IS PROVIDED “AS IS” WITHOUT WARRANTIES OF ANY KIND. TO THE MAXIMUM EXTENT PERMITTED BY LAW, OUR TOTAL LIABILITY FOR ANY CLAIM ARISING FROM THE SERVICE IS LIMITED TO THE AMOUNT YOU PAID US IN THE 12 MONTHS PRECEDING THE CLAIM. WE ARE NOT LIABLE FOR INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, OR FOR LEARNING OUTCOMES.

We may suspend or terminate accounts that violate these Terms. You may delete your account at any time; on termination your access ends, and unused subscription time is handled under Section 7.

We may update these Terms at any time. Material changes will be announced at least 14 days before they take effect, via email or in-app notice. Continued use after the effective date constitutes acceptance. If any provision is found invalid, the remaining provisions stay in full force. These Terms and the Privacy Policy form the entire agreement between you and LevelDoo.

• Legal & privacy: legal@leveldoo.com
• Billing: billing@leveldoo.com
• Support: support@leveldoo.com