Canceling the subscription on Android:

Open Google Play app Search for Voicedocs and tap on it Tap "Manage Subscriptions" Tap "Cancel subscription"

Canceling the subscription on iOS:

Go to Settings of your iPhone or iPad Select "iTunes & App Store" Tap on Apple ID Tap "Show Apple ID" Tap "Subscriptions" Tap on Voicedocs and choose "Cancel subscription"

At the end of registration period, you are provided monthly and yearly subscription options. If you haven't purchased apps on Google Play or App Store before, you will be asked to enter your credit card details.

After purchasing the app on your phone, you can connect to as many PCs as you want using that phone.