Undertaking an experience-sampling study via smartphones is complex. Scheduling and sending mobile notifications often requires the use of proprietary software that imposes limits on participants’ operating systems (whether iOS or Android) or the types of questions that can be asked via the application. We have developed an open-source platform—Samply—which overcomes these limitations. Researchers can access the entire interface via a browser, manage studies, schedule and send notifications linking to online surveys or experiments created in any Internet-based service or software, and monitor participants' responses—all without the coding skills usually needed to program a native mobile application. Participants can download the Samply Research mobile application for free from Google Play or the App Store, join a specific study, receive notifications and web links to surveys or experiments, and track their involvement. The mobile application leverages the power of the React Native JavaScript library, which allows it to be rendered in the native code of Android and iOS mobile operating systems. We describe Samply, provide a step-by-step example of conducting an experience-sampling study, and present the results of two validation studies. Study 1 demonstrates how we improved the website’s usability for researchers. Study 2 validates the mobile application’s data recording ability by analyzing a survey’s participation rate. The application’s possible limitations and how mobile device settings might affect its reliability are discussed.

通过智能手机进行体验抽样研究很复杂。安排和发送移动通知通常需要使用对参与者的操作系统（无论是 iOS 还是 Android）或可以通过应用程序提出的问题类型施加限制的专有软件。我们开发了一个开源平台——Samply——克服了这些限制。研究人员可以通过浏览器访问整个界面、管理研究、安排和发送链接到在任何基于 Internet 的服务或软件中创建的在线调查或实验的通知，并监控参与者的反应——所有这些都不需要编程本地人通常需要的编码技能移动应用程序。参与者可以下载样本研究从 Google Play 或 App Store 免费获取移动应用程序，加入特定研究，接收通知和调查或实验的网络链接，并跟踪他们的参与。该移动应用程序利用了React Native JavaScript库的强大功能，允许它以 Android 和 iOS 移动操作系统的本机代码呈现。我们描述样品，提供进行经验抽样研究的分步示例，并展示两项验证研究的结果。研究 1 展示了我们如何提高网站对研究人员的可用性。研究 2 通过分析调查的参与率来验证移动应用程序的数据记录能力。讨论了应用程序的可能限制以及移动设备设置如何影响其可靠性。