No. You're not charged after free trial, unless you choose to purchase one of prepaid packages.
Automatic transcription works well only in following conditions:
- Voice recording device has to be close to mouth of speaker
- Only one person speaks at a time
- High voice recording quality in quiet environment
VOICEDOCS doesn't charge you directly, all payment processing is done by Stripe, Inc headquartered at 185 Berry Street, Suite 550, San Francisco, California, USA. VOICEDOCS doesn't know and doesn't store your payment information, all information is sent to Stripe servers over SSL encryption.