# libretorrent: what changed from 3 to 4

- Product: libretorrent (https://whatsnew.fyi/product/libretorrent)
- Vendor: proninyaroslav
- Range: changelog entries numbered after 3.6 up to and including 4.1.1, stable releases only
- Entries below: 4 releases (newest first)
- Resolved: 3 is 3.6 and 4 is 4.1.1, the newest stable release of each major we track
- Carrying security changes: 1 · CVEs mentioned: 0 · Mentioning breaking changes: 0 · Removing or deprecating something: 0
- Page: https://whatsnew.fyi/product/libretorrent/compare/3...4

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

## What changed (24 changes, grouped by kind)

### Added

#### 4.1 (2026-07-14)

- Language selection setting, independent of the system language
- Torrent content files search, filtering and sorting
- Require proxy for all connections kill switch option

#### 4.0 (2025-08-11)

- Support for Android 15

### Changed

#### 4.1.1 (2026-07-24)

- Temporarily downgrade libtorrent4j to maintain support for Android 8.1 and below

#### 4.1 (2026-07-14)

- Improved theme switching
- Accessibility improvements
- Delete torrent dialog now remembers the checkbox state across restarts

#### 4.0 (2025-08-11)

- Implement Material 3 (Material You) design
- Optimize app size
- Disable validate HTTPS tracker by default
- Update libtorren4j to version 2.1.0-36

### Fixed

#### 4.1 (2026-07-14)

- Fixed invisible files in public folders on Play flavor's file picker
- Fixed shutdown getting stuck or double-triggered
- Fixed layout jitter on tablets
- Fixed files list items ellipsize
- Fixed selecting multiple torrents when searching
- Fixed crash with non-standard system default battery percentage in settings
- Fixed without tags filter
- Fixed tracker status check condition
- Fixed opening torrent files from the system dialog
- Fixed crash getting a custom attribute in Dynamic Theme
- Restore trackers and metadata when adding torrents in libtorrent 2.x

### Security

#### 4.1 (2026-07-14)

- Fixed SSRF (CWE-918) in torrent/feed URL fetching

_One release carries no categorized changes yet: 4.0.1._

## Release notes

### 4.1.1

- Date: 2026-07-24
- Version: 4.1.1
- Original notes: https://github.com/proninyaroslav/libretorrent/releases/tag/4.1.1
- Permalink: https://whatsnew.fyi/product/libretorrent/releases/4.1.1

- **changed** — Temporarily downgrade libtorrent4j to maintain support for Android 8.1 and below

Temporarily downgrade libtorrent4j to maintain support for Android 8.1 and below

### 4.1

- Date: 2026-07-14
- Version: 4.1
- Original notes: https://github.com/proninyaroslav/libretorrent/releases/tag/4.1
- Permalink: https://whatsnew.fyi/product/libretorrent/releases/4.1

- **added** — Language selection setting, independent of the system language
- **added** — Torrent content files search, filtering and sorting
- **added** — Require proxy for all connections kill switch option
- **changed** — Improved theme switching
- **changed** — Accessibility improvements
- **changed** — Delete torrent dialog now remembers the checkbox state across restarts
- **security** — Fixed SSRF (CWE-918) in torrent/feed URL fetching
- **fixed** — Fixed invisible files in public folders on Play flavor's file picker
- **fixed** — Fixed shutdown getting stuck or double-triggered
- **fixed** — Fixed layout jitter on tablets
- **fixed** — Fixed files list items ellipsize
- **fixed** — Fixed selecting multiple torrents when searching
- **fixed** — Fixed crash with non-standard system default battery percentage in settings
- **fixed** — Fixed without tags filter
- **fixed** — Fixed tracker status check condition
- **fixed** — Fixed opening torrent files from the system dialog
- **fixed** — Fixed crash getting a custom attribute in Dynamic Theme
- **fixed** — Restore trackers and metadata when adding torrents in libtorrent 2.x

* Added:
    - Language selection setting, independent of the system language
    - Torrent content files search, filtering and sorting
    - "Require proxy for all connections" kill switch option
    - Improved theme switching
    - Accessibility improvements
    - Delete torrent dialog now remembers the checkbox state across restarts
* Bugfixes:
    - Fixed SSRF (CWE-918) in torrent/feed URL fetching
    - Fixed invisible files in public folders on Play flavor's file picker
    - Fixed shutdown getting stuck or double-triggered
    - Fixed layout jitter on tablets
    - Fixed files list items ellipsize
    - Fixed selecting multiple torrents when searching
    - Fixed crash with non-standard system default battery percentage in settings
    - Fixed "without tags" filter
    - Fixed tracker status check condition
    - Fixed opening torrent files from the system dialog
    - Fixed crash getting a custom attribute in Dynamic Theme
    - Restore trackers and metadata when adding torrents in libtorrent 2.x
* Updated translations
* Upgraded dependencies and AGP

### 4.0.1

- Date: 2025-08-12
- Version: 4.0.1
- Original notes: https://github.com/proninyaroslav/libretorrent/releases/tag/4.0.1
- Permalink: https://whatsnew.fyi/product/libretorrent/releases/4.0.1

Fix crash on startup and on the settings page

### 4.0

- Date: 2025-08-11
- Version: 4.0
- Original notes: https://github.com/proninyaroslav/libretorrent/releases/tag/4.0
- Permalink: https://whatsnew.fyi/product/libretorrent/releases/4.0

- **changed** — Implement Material 3 (Material You) design
- **added** — Support for Android 15
- **changed** — Optimize app size
- **changed** — Disable validate HTTPS tracker by default
- **changed** — Update libtorren4j to version 2.1.0-36

* Material 3 (Material You) design
* Android 15 support
* App size optimizing
* Disable validate HTTPS tracker by default
* Minor fixes and improvements
* Updating translations
* libtorren4j version is 2.1.0-36