With SoundGecko Pro, users can convert an unlimited number of articles daily (each up to 30,000 words in length) and subscribe to 100 RSS feeds. The free version supports one feed and limits daily articles to 30, none longer than 4,000 words.
The Pro version also converts PDFs, supports multiple email addresses, and offers more synthesized voice options.
The service -- developed by Melbourne-based 121cast -- makes web content, documents, and emails more accessible for all readers, and can be a useful tool for children and adults with print disabilities, such as a visual impairment or dyslexia.
Users email article links to SoundGecko, which sends back an MP3 audio file that can be played on a computer, mobile device, or MP3 player.