Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.
500 Stories for Instagram - 500 Stories for the Instagram app comes up with features to help you create video and photo stories to upload them to various social media platforms.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
Instories: IG story edit - Instories: story editor for IG is an app by Ylee studio that comes up with features to help you easily find the desired template and layout for your Instagram story to make your social media account more popular.
Wondershare PDFelement - All-in-one PDF editor
Strucc - Strucc app allows users to show off their video editing skills by creating videos for Instagram using many professional video editing tools.