Same Language Subtitling:
SLS is a process where subtitles change color in perfect sync with audio. This association of the spoken and written word is a well-researched and proven method to strengthen reading skills.

At the heart of BookBox’s strategy is a tested, proven and award winning approach called Same Language Subtitling (SLS) pioneered by PlanetRead – BookBox’s parent organization www.planetread.org.

SLS is a simple idea yet powerful idea by which subtitles are added in the same language as the audio. For example, you see a story in German along with German subtitles. The subtitles are highlighted as per the audio in perfect timing so that reading becomes inescapable. What you hear is what you see!