We often get asked why we do not sell aCalendar+ directly on our website as an APK file, or why we do not offer alternative payment methods like PayPal. Here is a simple explanation of why we only use official mobile app stores.

1

License Management

Managing software licenses is very complex. Official app stores make this process automatic and secure for both users and developers.

No Custom Accounts Needed

To check if a purchase is valid, an app needs a license system. If we sold the app directly, we would have to create our own login system with user accounts and passwords. By using official stores, your purchase is safely connected to your existing Google or Huawei account.

2

Security & Automatic Updates

Using official app stores protects your device and ensures your app always works correctly.

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The Danger of Manual Installations

Installing apps from web links (sideloading APK files) can be dangerous. It forces users to disable important Android security settings, which makes the phone vulnerable to malware and viruses.

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Automatic Background Updates

Android systems change frequently. Apps downloaded from websites do not get automatic background updates. Official app stores deliver bug fixes and new features automatically, keeping your app stable and functional without any manual work.

3

International Taxes and Laws

As a small development team, handling global sales regulations on our own is nearly impossible.

Global Compliance: Selling digital products worldwide means dealing with different tax rates (like VAT) and financial laws in over 100 countries. App stores act as the "Merchant of Record." They handle all the international payments, invoicing, local currencies, and legal taxes for us. This allows our team to focus fully on designing and improving aCalendar.