This is an incomplete list of notable applications (apps) that run on iOS where source code is available under a free software/open-source software license. Note however that much of this software is dual-licensed for non-free distribution via the iOS app store; for example, GPL licenses are not compatible with the app store.
| Application name | Description | License | Source | Notes | |
|---|---|---|---|---|---|
| Brave browser | Mobile web browser | MPL 2.0 | git | Also available for Android, Windows, macOS and Linux. | |
| Password manager | GPLv3 | git | Also available for Windows, Linux, macOS and Android. | ||
| Encrypted XMPP client | GPLv3 | git | |||
| Office suite compatible with Microsoft Office, enterprise ready LibreOffice | git | Also available for Android, ChromeOS, iPadOS, Windows, macOS and Linux. | |||
| DuckDuckGo search engine client | Apache 2.0 | git | Also available for Firefox, Chrome, Safari and Android. | ||
| Matrix collaboration client for iOS | Apache 2.0 | git | Also available for Android, Web and Linux. | ||
| Mobile web browser | MPL 2.0 | git | Also available for Android. | ||
| Mobile web browser | MPL 2.0 | git | |||
| Infomaniak Drive | File sync and share - The secure cloud | GPLv3 | git | Also available for Windows, Linux, macOS and Android. | |
| Softphone and instant messenger | GPLv3 | git | Also available for Windows, Linux, macOS and Android. | ||
| Note taking and to-do application with synchronization capabilities | MIT | git | Also available for Android, Windows, macOS and Linux. | ||
| App for the website kickstarter.com | Apache 2.0 | git | Also available for Android. | ||
| Video SIP/VoIP client | GPLv2 | [git://git.linphone.org/linphone-iphone.git git] | Also available for Android. | ||
| Offline maps and navigation using OpenStreetMap data | Apache 2.0 | git | Also available for Android. | ||
| MuPDF | PDF reader | AGPL v3+ | git | Also available for Android and Windows and unix-like systems. | |
| RSS reader | MIT | git | Also available for macOS. | ||
| File sync and share, with encryption possible | GPLv3 | git | Also available for Android, Windows, macOS and Linux. | ||
| Nextcloud Talk | Chat, voice and video calling | GPLv3 | git | Also available for Android. | |
| AGPL v.3 | git | Also available for Android, Windows, macOS and Linux. | |||
| Open-source and open-data food scanner | Apache 2.0 | git | Also available for Android. | ||
| An open-source, privacy-enhancing web browser for iOS, utilizing the Tor anonymity network | own | git | |||
| Offline maps and navigation using OpenStreetMap data | Apache 2.0 | git | Also available for Android and on F-Droid and AppGallery. | ||
| Offline maps and navigation using OpenStreetMap data | MIT | git | Also available for Android. | ||
| File sync and share (the official ownCloud app) | GPLv3 | git | Also available for Android, Windows, macOS and Linux. | ||
| E-Mail client ProtonMail | GPLv3 | git | Also available for Android. | ||
| Encrypted instant messaging, voice and video calling | GPLv3 | git | Also available for Android, Windows, macOS and Linux. | ||
| Encrypted, decentralized, privacy-focused messaging & calling without any meta-data collected | GPLv3 | git | Also available for Android, Windows, macOS and Linux. | ||
| Encrypted notes | GPLv2 | git | Also available for Android, Windows, macOS and Linux. | ||
| Encrypted instant messaging | GPLv3 | git | Also available for Android. | ||
| Instant messaging | GPLv2 | git | Also available for Android, Windows Phone, and Firefox OS. | ||
| Email client | GPLv3 | git | Also available for Android, Windows, macOS and Linux. | ||
| Free software | git | ||||
| A port of the free VLC media player | MPL 2.0 GPLv2+ | git | |||
| The official White House app | MIT | git | |||
| wikiHow app | GPL | git | |||
| The official Wikipedia app | MIT | git | Also available for Android, webOS and Kindle. | ||
| Encrypted instant messaging, voice and video calling | GPLv3 | git | Also available for Android, Windows, macOS and Linux. | ||
| The official WordPress app | GPLv2 | git | Also available for Android. |