Sending messages with Whatsapp can be convenient, except there is no option to schedule a pre-set message for delivery. The appropriately named jailbreak tweak Message Scheduler for Whatsapp changes this by adding scheduling functionality directly to the app.
Once installed, Message Scheduler for Whatsapp has no settings to configure. The tweak works by adding a button titled "Schedule a message" to the message menu. Simply tap this option and choose the date and time when message delivery is desired.
Messages can also be scheduled by long pressing the send button when entering message text. Whatsapp will confirm scheduled message sending when the correct time arrives. Not only will the app provide an option to send, edit or cancel the message delivery, but the message text will be displayed for review.
The message alert must be confirmed for the scheduled message to be sent, which means that Whatsapp will not send messages completely on its own.Message Scheduler for Whatsapp is available from the BigBoss repo on Cydia for $0.99. Jailbreak iOS 7.1.x with Pangu to start customizing iOS. Check here for instructions on how to jailbreak iOS 7.0.x with evasi0n 7. You can also find out how to purchase and install Cydia tweaks with this guide.