Speak2Scroll

Speak2Scroll is a speech recognition based teleprompter that can scroll typed text and/or text files -- such as pdfs, images containing text, and other text documents -- in time with your spoken words. 
All features are available for free with ads. Ad-free version available via in-app purchase.
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Ad-Free Version:
You may either make a one-time in-app purchase of $19.99 for the lifetime ad-free version or you may purchase an auto-renewing subscription:
• 1 month ($0.99) and 1 year ($9.99) durations
• Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period.
• Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase
• Terms of use: https://www.speak2scroll.com/terms-conditions