4ART vs engineer toolbox

Create a forgery-proof 4ARTpassport for your artworks. Manage your artwork and its provenance. By using the 4ARTapp, the provenance of your artwork is seamlessly updated. All artwork related processes are automatically documented for you. Take a clear look at your art collection in lists or detailed views. Enjoy artworks in the virtual gallery or use VR glasses for a unique experience. Share your artworks with interested parties and lovers, assuring that images and provenance-documents are secured. Shared artworks can also be viewed at any time in the virtual gallery. Enjoy artworks selected by artists and art lovers, free of charge. You can view these published compilations of artworks also in the VR gallery. Features: Artwork registration and management: You can register artworks and manage the related data Compilation management: You can create compilations of artwork and share them with other art lovers. Authenticate registered artworks: You can forgery-proof identify registered artworks. Share artworks: You have the option to share artworks with other 4ARTapp users Transfers: Possessor change, change of location and Transfer of ownership can be fully documented with the 4ARTapp VR gallery: With the VR Gallery you have the opportunity to view artworks on a virtual tour. Discovery Mode: Your registered artworks are recognized and the related information is provided to you Employee management: You have the option of letting other people work on your behalf. Services that are available to you, free of charge are, the sharing of artworks and compilations, the VR Gallery and the change of location and ownership. Paid services include the registration and authentication of artworks, the documentation of a transfer of ownership, as well as the loan.

Engineer Toolbox 是一款面向电子与硬件工程师的实用计算工具，提供常见电子电路参数计算、单位换算和目标反推功能，帮助用户更高效地完成设计、分析与验证工作。 应用内包含多种常用计算功能，包括： LDO 分压电阻计算 PCB 参数计算 热阻计算 电阻 / 电容 / 电感换算 无源滤波器计算 欧姆定律计算 变压器计算 基本运放放大电路计算等 部分功能需通过自动续订订阅使用。应用提供包月订阅和包年订阅，具体价格以应用内展示为准。订阅将在每个订阅周期结束时自动续订，除非用户至少在当前周期结束前 24 小时取消订阅。用户可在购买后前往 Apple ID 账户设置中管理或取消订阅。 服务条款（EULA）: https://www.apple.com/legal/macapps/stdeula/