:ChatSecure

{{Short description|Messaging application}}

{{Infobox software

| name = ChatSecure

| logo = ChatSecure_App_Icon.png

| logo alt = ChatSecure logo, full.

| logo caption =

| screenshot =

| screenshot alt =

| caption = ChatSecure 4.0

| collapsible =

| author = Chris Ballinger

| developer = Chris Ballinger, David Chiles, and contributors

| released = 1.0.2 / {{Start date and age|2012|02|27}}{{cite web|url=https://github.com/ChatSecure/ChatSecure-iOS/releases/tag/v1.0.2|title=ChatSecure/ChatSecure-iOS|website=GitHub}}

| discontinued =

| ver layout =

| latest release version = 5.0.4{{cite web|url=https://apps.apple.com/us/app/chatsecure/id464200063|title=ChatSecure Messenger|date=13 August 2021 }}

| latest release date = {{start date and age|2021|08|13}}

| latest preview version = {{wikidata|property|preferred|references|edit|Q28444644|P348|P548=Q51930650}}

| latest preview date = {{wikidata|qualifier|preferred|single|Q28444644|P348|P548=Q51930650|P577}}

| programming language = Objective-C, Swift

| operating system = iOS

| platform =

| size = 10.7 MB

| language =

| language count = 30

| language footnote = {{cite web|url=https://apps.apple.com/app/chatsecure-messenger/id464200063|title=ChatSecure Messenger on the App Store|website=apps.apple.com|date=13 August 2021 }}

| genre = Communication

| license = GPL-3.0-or-later{{cite web|url=https://github.com/ChatSecure/ChatSecure-iOS/blob/master/README.md|title=README.md|website=GitHub }}

| alexa =

| website = {{URL|https://chatsecure.org}}

| repo = {{URL|https://github.com/chatsecure}}

| standard =

| AsOf =

}}

ChatSecure is a messaging application for iOS which allows OTR and OMEMO encryption for the XMPP protocol. ChatSecure is free and open source software available under the GPL-3.0-or-later license.

ChatSecure has been used by international individuals{{cite magazine|url=https://www.wired.com/2016/01/secure-messaging-apps/|title=Your Selfies Are Insecure. Here's How to Encrypt Them|first=April|last=Glaser|magazine=Wired }}{{cite news|url=https://www.theguardian.com/technology/2014/dec/11/messenger-private-chats|title=Worried about leaky chats? Messaging apps are responding with security features|first=Stuart|last=Dredge|date=11 December 2014|newspaper=The Guardian}} and governments,{{cite news|url=https://www.wsj.com/articles/how-the-u-s-fights-encryptionand-also-helps-develop-it-1456109096|title=How the U.S. Fights Encryption—and Also Helps Develop It|first=Damian|last=Paletta|date=22 February 2016|newspaper=Wall Street Journal}} businesses,{{cite journal|url=https://www.scientificamerican.com/article/its-time-to-admit-that-e-mail-will-never-be-100-percent-secure/|title=Your E-mail Password Will Never Be Safe|first=David|last=Pogue|journal=Scientific American|year=2016|volume=316|issue=1|pages=24|doi=10.1038/scientificamerican0117-24|pmid=28004711|bibcode=2016SciAm.316a..24P|url-access=subscription}} and those spreading jihadi propaganda.{{cite web|url=https://www.newindianexpress.com/states/kerala/2017/jan/12/dark-net-islamic-preachers-under-intelligence--lens-1558736.html|title='Dark net' Islamic preachers under intelligence lens|date=12 January 2017 }}{{cite web|url=http://www.dailydot.com/layer8/isis-telegram-encryption-messenger-recommendations/|title=ISIS recommends list of secure-messaging apps amid heated U.S. encryption debate|website=The Daily Dot|date=13 April 2016 }}

As of July 2023 the app haven't received any updates in almost two years.{{Cite web |title=Commits · ChatSecure/ChatSecure-iOS |url=https://github.com/ChatSecure/ChatSecure-iOS |access-date=2023-07-14 |website=GitHub |language=en}}