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Jack Dorsey Launches Sun Day, Elevating UV Tracking and Vitamin D Management

Introduction

Jack Dorsey, renowned for co-founding Twitter, is once again reshaping the digital landscape with his latest venture. Following the recent release of Bitchat—a Bluetooth-based messaging application—Dorsey has introduced Sun Day, an innovative tool designed to monitor UV exposure and track vitamin D intake.

Harnessing Technology For Health

Sun Day exemplifies the seamless integration of technology and daily wellness. Available exclusively on iOS via TestFlight, the app provides users with real-time UV index data based on their geographic location. In addition to critical weather parameters such as cloud cover, sunrise, and sunset timings, Sun Day enables users to select their skin type from six distinct categories. This personalized approach ensures that the app calculates the precise duration of safe sun exposure before the risk of skin burn becomes a concern.

Open-Source Innovation

Dorsey’s commitment to transparency and developer collaboration is evident in the open-source nature of Sun Day. Its code is accessible on GitHub, inviting developers to clone and contribute to its continuous evolution. Notably, Dorsey leveraged Goose, an open-source coding tool, as opposed to more widely-recognized options like Cursor, Claude Code, or Windsurf.

Enhanced Features for Daily Wellness

In addition to UV tracking, Sun Day calculates and displays the minimum vitamin D intake required for optimal health. Users initiate a session via the ‘Track UV Exposure’ button, and upon completion, the app quantifies both the vitamin D generated during the session and the cumulative effect over the day. This holistic approach to sun exposure management is expected to appeal to health-conscious individuals and professionals seeking a balance between safety and sunlight benefits.

Conclusion

With Sun Day, Jack Dorsey extends his pioneering influence in the tech industry to improve personal health management. By fusing robust technological capabilities with actionable health insights, Sun Day offers a compelling model for future innovations across digital wellness applications.

EU E-Commerce VAT Systems Generate €257.9 Million Revenue for Cyprus in 2024

Robust Revenue Growth Through Streamlined VAT Collection

Cyprus has demonstrated a significant fiscal boost in 2024 with €257.9 million generated from the European Union’s e-commerce VAT systems, according to Tax Commissioner Sotiris Markides. This impressive performance underscores the effectiveness of the One Stop Shop (OSS) and Import One Stop Shop (IOSS) frameworks in simplifying cross-border tax compliance.

Simplified Procedures for EU and Non-EU Businesses

The OSS system allows Cyprus-registered businesses to streamline VAT declaration and payment on sales to consumers in other EU countries. Companies simply register on the local OSS platform, apply the consumer’s VAT rate, aggregate their submissions quarterly or monthly, and remit a single consolidated payment. Subsequently, Cyprus allocates the appropriate share to each respective EU country. This efficient process extends to non-EU sellers as well, who can have their intra-EU distance sales managed under the Union Scheme.

Breakdown of VAT Revenue Streams

Last year’s declarations under the various schemes illustrate the system’s broad reach: €217.9 million was collected via the Union Scheme, €36.9 million through the Non-Union Scheme, and €3.1 million via the Import Scheme. While the Union Scheme caters to both EU and non-EU sellers engaging in distance sales, the Non-Union Scheme specifically accommodates non-EU firms delivering services to EU consumers. Furthermore, the Import Scheme targets goods valued at less than €150 that are imported from outside the EU.

Implications and Broader Impact

Implemented in July 2021 as an evolution from the more limited MOSS system, these reforms have not only consolidated tax collection through an expansive OSS but also integrated the IOSS for low-value imports. By designating certain online marketplaces as “deemed suppliers,” the new framework ensures that VAT collection is both efficient and equitable. Across the EU, these mechanisms have generated over €33 billion in VAT revenues in 2024, reflecting a successful effort to simplify tax compliance, reduce administrative burdens, and promote fair taxation across the bloc.

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