Vesper 是一款基于非常简洁的�一个笔记类 iOS App, 以下是他们最后一次的更新说明:
Q Branch is closing down, and Vesper will no longer be developed. Here’s what that means for you, as a Vesper user:
• You can no longer create new sync accounts.
• The sync server will go offline, permanently, at 8:00 PM Pacific on August 30, 2016.
• Upon shutdown, we will be destroying all sync data on our server. It will not be recoverable by us or anyone else. IMPORTANT: The notes and data stored by Vesper on your device will not be destroyed — only the data on the sync server.
• Vesper itself will be removed from the App Store on September 15.
• Vesper now has an Export feature. You’ll find it at the bottom of the sidebar. You do not need a sync account to export your notes. You can export to iCloud Drive, Dropbox (if you have Dropbox installed on your iOS device), or any other destination provided by an app with a Document Provider extension.
• Each note is exported to a plain text file. Images are exported as well.
Q Branch 的成员之一 John Gruber 发布了一篇文章对 Vesper 的失败以及关闭原因作了一个说明。原文链接在此：Vesper, Adieu
首先，里面提到了如果可以再来一次，他们会如何规划 Vesper 的开发，对于想要在 Apple 的平台上做开发的后来者，有一定参考价值。
其中提到了 Vesper 需要彻底关闭的原因在于他们使用的是自建的同步服务，所以每个月都会亏钱，而没有使用 iCloud 则是因为他们 2013 开发同步功能的时候，CloudKit 尝未发布。
Vesper macOS �版设计图，可惜我已经等不到了！
John Gruber 在文章中提到，如果重新来一次的话，他们会先开发 macOS 版，然后做同步，再做 iOS 版本，最后考虑做 web 网页版。
- Build Vesper for Mac. Sell it for around $20.
- Build a sync system.
- Build Vesper for iPhone.
- Build Vesper for iPad.
- Maybe build a web version.
这是一个非常好的案例，有兴趣的同学可以去看 John Gruber 的原文，里面提到很多细节�。原文链接：Vesper, Adieu
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