Diktofon is an Android app developed by Kaarel Kaljurand, designed to search, organize, and transcribe audio files using a speech recognition tool. The app is particularly useful for recordings of Estonian speech, as it uses an online Estonian speech-to-text service to transcribe the recordings. With Diktofon, users can easily search recordings by keywords, sort them by the number of words and speakers, and even click on a transcription paragraph to playback the corresponding audio. Additionally, users can tag recordings and search them by tag, as well as sort recordings by creation date, duration, and byte size. The app is free to use and is categorized under Business & Productivity.