Available on the App Store

Crafting Delightful
Apps & Games

We build thoughtfully designed mobile applications that make your everyday life simpler, more focused, and more fun.

Get Support Our Apps
Portfolio

Our Apps & Games

A growing collection of carefully crafted applications designed with love and attention to detail.

🎵

Focus & White Noise

Natural ambient sounds with Pomodoro timer. Mix sounds, set sleep timers, and boost your focus.

Productivity
🧩

Morphtiles

A creative puzzle game with beautiful skins and satisfying tile mechanics. Challenge your brain!

Game
💰

Expense Tracker

Simple, beautiful expense management. Track spending, set budgets, and stay financially organized.

Finance
🏫

Class Fund Manager

Manage class funds effortlessly. Track contributions, expenses, and generate reports with ease.

Finance
Support

How Can We Help?

Find answers to common questions or reach out to us directly.

How do I report a bug or issue? +
You can report bugs or issues by sending an email to our support address below. Please include the app name, your device model, OS version, and a description of the issue. Screenshots are always helpful!
Which devices are supported? +
Our apps are available on iOS (iPhone and iPad) running iOS 15.0 or later. Some apps may also support Android devices. Check the App Store or Google Play for specific compatibility details.
How do I request a new feature? +
We love hearing from our users! Send us your feature requests via email. We carefully review every suggestion and prioritize the most requested features for future updates.
Is my data safe and private? +
Absolutely. We take your privacy very seriously. All data is stored locally on your device. We do not collect, sell, or share any personal information. Please read our Privacy Policy for full details.
Are the apps free to use? +
Yes! All our apps are free to download and use. Some apps may include optional ads that support development. Premium features, if available, can be unlocked through the app.
How do I restore my data after reinstalling? +
Data is stored locally on your device. If you have iCloud backup enabled for the app, your data will be restored automatically when you reinstall. We recommend keeping regular backups of your device.
Legal

Policies & Terms

🔒

Privacy Policy

How we handle and protect your data across all our applications.

 📋

Terms of Service

The terms and conditions governing the use of our apps and games.

Still Need Help?

Our team is here to assist you. Drop us an email and we'll get back to you as soon as possible.

dangvanhai13091989@gmail.com

We typically respond within 24-48 hours

← Back to Home

Privacy Policy

Last updated: March 28, 2026

1. Introduction

HaiDV Studio ("we", "our", or "us") operates mobile applications and games available on the Apple App Store and Google Play Store. This Privacy Policy describes how we collect, use, and share information when you use our applications.

By using any of our applications, you agree to the collection and use of information in accordance with this policy.

2. Information We Collect

Our apps are designed with privacy in mind. We collect minimal data:

3. Data Storage

All user-generated data (settings, preferences, app content) is stored locally on your device. We do not maintain servers that store your personal data. Your data stays on your device and under your control.

4. Third-Party Services

Our apps may use the following third-party services:

5. Children's Privacy

Our apps do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us so we can take appropriate action.

6. Your Rights

You have the right to:

7. App Tracking Transparency

On iOS 14.5 and later, our apps will request your permission before tracking your activity across other companies' apps and websites. You can change this permission at any time in your device's Settings → Privacy → Tracking.

8. Changes to This Policy

We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date.

9. Contact Us

If you have any questions about this Privacy Policy, please contact us at:
dangvanhai13091989@gmail.com

← Back to Home

Terms of Service

Last updated: March 28, 2026

1. Acceptance of Terms

By downloading, installing, or using any application developed by HaiDV Studio, you agree to be bound by these Terms of Service. If you do not agree, please do not use our applications.

2. Use of Applications

Our applications are provided for personal, non-commercial use. You agree not to:

3. Intellectual Property

All content, features, and functionality of our applications — including but not limited to design, graphics, text, audio, and code — are the exclusive property of HaiDV Studio and are protected by copyright and other intellectual property laws.

4. Advertisements

Our free applications may display third-party advertisements. We are not responsible for the content of these advertisements. Your interactions with advertisers are solely between you and the advertiser.

5. Disclaimer of Warranties

Our applications are provided "as is" without warranties of any kind, either express or implied. We do not guarantee that our applications will be uninterrupted, error-free, or free of harmful components.

6. Limitation of Liability

To the maximum extent permitted by law, HaiDV Studio shall not be liable for any indirect, incidental, special, or consequential damages arising from the use of our applications.

7. Changes to Terms

We reserve the right to modify these Terms at any time. Continued use of our applications after any changes constitutes acceptance of the new Terms.

8. Contact

For questions about these Terms of Service, please contact us at:
dangvanhai13091989@gmail.com