Welcome to Math Growth. This Agreement is between you and Tonghua Jize Network Technology Co., Ltd. and governs your download, installation, registration, sign-in, purchase, and use of the App and related services.
By accepting, registering, signing in, purchasing membership, or continuing to use the App, you agree to this Agreement and the Privacy Policy. If you do not agree, stop using the relevant features.
Tool-only service: Math Growth is a tool for arithmetic practice, periodic tests, and result analysis. It does not provide online classes, instructor-led teaching, training enrollment, public content, social interaction, or live streaming. Questions, hints, and analysis are generated from preset rules and answer data for self-practice and record keeping.
1. Definitions and Provider
App / Math GrowthThe Math Growth mobile application and its related account, membership, and support services.
You / UserThe natural person who downloads, registers, signs in, purchases, or uses the App.
Learning DataStudent nicknames or aliases, grade, term, answer settings, practice and test records, unfinished progress, mistakes, mastery, and performance analysis generated on the device.
2. Services and Use
The current version offers arithmetic practice by grade, term, and topic; tests; performance trends; targeted reinforcement; multiple student profiles; display and answer settings; local backup and restore; accounts; membership; and feedback. Actual availability is shown in the App.
Core local practice is available without signing in. An account supports membership sync, purchase verification, password reset, account security, and feedback. Sign-in is not required for local learning features.
Scores, mastery levels, and suggestions are programmatic results based on the selected questions and answer records. They are not official grades or professional assessments.
3. Accounts and Security
You may register or sign in using the email and password method shown in the App. Protect your password, codes, device, and backups. Do not impersonate others, trade accounts, attack services, scrape in bulk, alter data, or bypass membership and security controls.
You may sign out or delete your account under My - Account Center. After deletion, server-side account information is deleted or anonymized as required by law, except records required for transactions, security, or disputes. Account deletion does not cancel store subscriptions or erase local learning data.
4. Local Data, Backup, and Restore
Learning Data is stored on the current device by default. Uninstalling, clearing app data, device loss, reset, or changing devices without a backup may cause loss. Signing out or deleting an account does not delete local data.
Manual backup copies a complete backup text for later paste-based restore. It may contain all student profiles and records; keep it only in a trusted location. Use nicknames or aliases and do not enter unrelated real names, schools, addresses, identity documents, health, or financial information.
5. Free Features, Membership, and Purchases
Free limits, Pro benefits, plans, price, period, and offers are those displayed in the Membership Center and store purchase sheet. Purchase, billing, auto-renewal, cancellation, and refunds are handled by the actual store under its rules. Uninstalling, signing out, or deleting the App account does not cancel a subscription.
Entitlements depend on store transaction records and server verification. Restoration normally requires the original store account. If you were charged but benefits are missing, use Restore Purchases or contact support.
6. Acceptable Use
Do not disrupt the service, falsify transactions, distribute malware, reverse-engineer without authorization, or use the App unlawfully. Feedback should describe the page, question, and expected result without unrelated personal information.
7. Intellectual Property
The App's software, interface, icons, question-generation rules, text, and code are owned by us or lawful rightsholders. We grant you a limited, non-exclusive, non-transferable, revocable license for personal use.
8. Changes and Availability
We may update, pause, or discontinue features for product, security, legal, store-policy, or operational reasons. Network, device, store, or server failures may temporarily affect online features. Keep regular local backups.
9. Responsibility
We use reasonable efforts to maintain question quality, data processing, and service stability, but cannot promise error-free or uninterrupted operation in every circumstance. Rights that cannot be excluded under consumer or privacy law remain unaffected.
10. Updates, Law, and Contact
We may update this Agreement when features, laws, or platform rules change. It is governed by the laws of the People's Republic of China. Parties should first seek an amicable resolution, without limiting mandatory consumer rights.