Welcome to tip411! -, Custom, agency branded, free to download, iPhone and Android apps for law enforcement. 2-way anonymous tips submitted by the public through text via a custom keyword, over email, weblinks and through your social media sites. Community alerts can be sent to your custom apps, the publics’ email and/or text and to your social media sites as well.Engage your community and fight crime with tip411. Mobilized Community Engagement. Anyone. Anytime. Anywhere. tip411 provides a web-based toolset that allo.