9.1 免费、公开地访问您的地图 API 实施。您的地图 API 实施必须普遍 用户可以免费使用。 您可能需要用户登录 您的 Maps API 实施（如果您这样做） 不要求用户支付费用。除非 你已经进入了一个单独的 与 Google 签订的书面协议或 已获得 Google 的书面许可， 您的 Maps API 实现不得：
I would definitely check with Google and/or get your own lawyer's opinion, but the bolded section below would make me think that you would not need a premier license for the development phase.
9.1 Free, Public Accessibility to Your Maps API Implementation. Your Maps API Implementation must be generally accessible to users without charge. You may require users to log in to your Maps API Implementation if you do not require users to pay a fee. Unless you have entered into a separate written agreement with Google or obtained Google's written permission, your Maps API Implementation must not:
(a) require a fee-based subscription or other fee-based restricted access; or (b) operate only behind a firewall or only on an internal network (except during the development and testing phase).
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评论（1）
（IANAL 和我不代表 Google）
我肯定会咨询 Google 和/或获取您自己律师的意见，但下面的粗体部分会让我认为您在开发阶段不需要首要许可证。
地图 API TOS
(IANAL and I don't speak for Google)
I would definitely check with Google and/or get your own lawyer's opinion, but the bolded section below would make me think that you would not need a premier license for the development phase.
Maps API TOS