Bolo is an Android app that allows Indian language speakers to earn money by contributing their voice to improve Indian language speech recognition. The app provides users with sentences in the Indian language of their choice, which they can record and upload. The uploaded audio is then verified for accuracy, and payments are made accordingly. Developed by Navana Tech, Bolo is a free app that falls under the category of Business & Productivity.

The app is designed to be user-friendly, and the interface is straightforward. Users can choose their preferred Indian language and record their voice with ease. The app also provides a playback feature that allows users to review their recordings before uploading them. Overall, Bolo is an excellent app for Indian language speakers who want to earn money by contributing their voice to improve speech recognition.