Scribble uses illustrations/animations from a variety of sources. The following images are used in the app/promotional materials and can be attributed to:
Illustration by pch.vector
https://www.freepik.com/free-vector/female-writer-using-retro-typing-machine_7732622.htm#&position=1&from_view=undefined
Illustration by pch.vector
https://www.freepik.com/free-vector/office-workers-taking-notes_8271056.htm#&position=21&from_view=undefined
Illustration by pch.vector
https://www.freepik.com/free-vector/managers-generation-sales-by-marketing-funnel-tiny-people-working-conversion-digital-data-ideas-into-money-flat-vector-illustration-advertising-social-media-seo-service-concept_22343908.htm#&position=19&from_view=undefined
Illustration by vectorjuice
https://www.freepik.com/free-vector/tiny-people-scientists-identify-womans-emotions-from-voice-face-emotion-detection-emotional-state-recognizing-emo-sensor-technology-concept_11669264.htm#&position=13&from_view=undefined
Illustration by starline
https://www.freepik.com/free-vector/comic-style-moon-stars-clouds-background-design_10016755.htm#&position=7&from_view=undefined
Animation by Gian Montes