The motivation behind this study is to collect non-native English speech recordings seamlessly. Even though numerous corpora containing non-native English speakers exist, there are not so many resources of Polish speakers uttering sentences in English. That is why a web-based application is built to record L2 English speakers. The same application is also developed in the mobile form as it provides easy access to the software created and, at the same time, built-in microphones ensure sufficient quality of recordings. A set of sentences is prepared, including four main types, i.e., declarative, imperative, interrogative, and exclamatory. Recordings are saved in WAV audio format. Local data are first saved in the memory of the device on which the application is installed, and then, the user may listen to the recordings and then send them to the server using FTP (File Transfer Protocol). The user interface allows for English language level selection, by choosing one of the four possible options, i.e., basic, intermediate, advanced, and fluent. A group of volunteers provided speech samples, resulting in the collection of utterances from more than 600 speakers, available in the created corpus. Future development envisions adding additional modules that will allow for speech signal analyses.