diff --git a/tools/fdroid-submit.nu b/tools/fdroid-submit.nu
new file mode 100644
index 00000000..0db467ef
--- /dev/null
+++ b/tools/fdroid-submit.nu
@@ -0,0 +1,57 @@
+#!/usr/bin/env nu
+
+# Submit a build recipe to fdroiddata via the GitLab API, without cloning it.
+#
+#   nix develop --command nu tools/fdroid-submit.nu
+#
+# Reads a recipe from tools/fdroid/<appid>.yml, pushes it to a branch on the
+# fork and opens a merge request against fdroid/fdroiddata. Needs a GitLab
+# personal access token with the 'api' scope in GITLAB_TOKEN.
+
+const FORK = "austinried/fdroiddata"
+const UPSTREAM = "fdroid/fdroiddata"
+const BASE_BRANCH = "master"
+
+def pct-encode [s: string] { $s | str replace -a "/" "%2F" }
+
+def main [
+    recipe: path = "tools/fdroid/com.subtracks.yml"
+    --api: string = "https://gitlab.com/api/v4"
+    --branch: string = ""
+    --title: string = ""
+    --dry-run
+] {
+    if not ($recipe | path exists) {
+        error make { msg: $"recipe not found: ($recipe)" }
+    }
+
+    let appid = ($recipe | path basename | str replace -r '\.ya?ml$' '')
+    let branch = (if ($branch | is-empty) { $"($appid)-recipe" } else { $branch })
+    let title = (if ($title | is-empty) { $"($appid): update build recipe" } else { $title })
+    let file_path = (pct-encode $"metadata/($appid).yml")
+    let fork = (pct-encode $FORK)
+    let upstream = (pct-encode $UPSTREAM)
+
+    if $dry_run {
+        print $"would push ($recipe) to ($FORK)@($branch) and open an MR against ($UPSTREAM)@($BASE_BRANCH)"
+        return
+    }
+
+    let token = ($env.GITLAB_TOKEN? | default "")
+    if ($token | is-empty) {
+        error make { msg: "GITLAB_TOKEN is unset; it needs a GitLab token with the 'api' scope" }
+    }
+    let headers = { "PRIVATE-TOKEN": $token }
+    let fork_id = (http get $"($api)/projects/($fork)" --headers $headers | get id)
+
+    try {
+        http delete $"($api)/projects/($fork)/repository/branches/($branch)" --headers $headers | ignore
+    } catch { }
+
+    http post $"($api)/projects/($fork)/repository/branches" ({ branch: $branch, ref: $BASE_BRANCH } | to json) --headers $headers --content-type "application/json" | ignore
+
+    http post $"($api)/projects/($fork)/repository/files/($file_path)" ({ branch: $branch, content: (open --raw $recipe), commit_message: $title } | to json) --headers $headers --content-type "application/json" | ignore
+
+    let mr = (http post $"($api)/projects/($upstream)/merge_requests" ({ source_project_id: $fork_id, source_branch: $branch, target_branch: $BASE_BRANCH, title: $title, remove_source_branch: true } | to json) --headers $headers --content-type "application/json")
+    print $"opened MR !($mr.iid): ($mr.web_url)"
+}
diff --git a/tools/fdroid/com.subtracks.yml b/tools/fdroid/com.subtracks.yml
new file mode 100644
index 00000000..08a8211f
--- /dev/null
+++ b/tools/fdroid/com.subtracks.yml
@@ -0,0 +1,373 @@
+Categories:
+  - Multimedia
+License: GPL-3.0-only
+AuthorName: austinried
+AuthorEmail: subtracks@functionkey.xyz
+WebSite: https://github.com/austinried/subtracks
+SourceCode: https://github.com/austinried/subtracks
+IssueTracker: https://github.com/austinried/subtracks/issues
+Donate: https://ko-fi.com/austinried
+
+AutoName: Subtracks
+
+RepoType: git
+Repo: https://github.com/austinried/subtracks
+
+Builds:
+  - versionName: 1.0.1
+    versionCode: 3
+    commit: v1.0.1
+    subdir: android/app
+    sudo:
+      - sysctl fs.inotify.max_user_watches=524288
+      - curl -Lo node.tar.xz https://nodejs.org/dist/v14.17.5/node-v14.17.5-linux-x64.tar.xz
+      - echo "2d759de07a50cd7f75bd73d67e97b0d0e095ee3c413efac7d1b3d1e84ed76fff node.tar.xz"
+        | sha256sum -c -
+      - tar xJf node.tar.xz
+      - cp -a node-v14.17.5-linux-x64/. /usr/local/
+      - npm -g install yarn
+    gradle:
+      - yes
+    srclibs:
+      - react-native-reanimated@2.2.0
+    prebuild:
+      - echo -e '\norg.gradle.jvmargs=-Xmx4g -XX:MaxPermSize=4g' >> ../gradle.properties
+      - echo -e "android { packagingOptions { pickFirst 'lib/**/*.so' } }" >> build.gradle
+      - cd ../..
+      - yarn install
+      - cd $$react-native-reanimated$$
+      - echo -e "android { ndkVersion '21.4.7075529' }" >> build.gradle
+      - yarn add react-native@0.64.1
+    scanignore:
+      - android/build.gradle
+      - node_modules/jsc-android
+      - node_modules/hermes-engine
+      - node_modules/react-native/android/com/facebook/react/react-native/*/
+      - node_modules/react-native-safe-area-context/android/build.gradle
+      - node_modules/react-native-screens/android/build.gradle
+      - node_modules/react-native-webview/android/build.gradle
+      - node_modules/react-native/template/android/build.gradle
+      - node_modules/react-native-image-colors/android/build.gradle
+      - node_modules/react-native-track-player/android/build.gradle
+      - node_modules/react-native-vector-icons/android/build.gradle
+      - node_modules/@react-native-async-storage/async-storage/android/build.gradle
+      - node_modules/@react-native-community/masked-view/android/build.gradle
+      - node_modules/@react-native-community/netinfo/android/build.gradle
+    scandelete:
+      - node_modules
+    build:
+      - pushd $$react-native-reanimated$$
+      - FOR_HERMES=True gradle :assembleRelease
+      - popd
+      - mv $$react-native-reanimated$$/build/outputs/aar/android-release.aar 
+        ../../node_modules/react-native-reanimated/android/react-native-reanimated-64-hermes.aar
+    ndk: r21e
+
+  - versionName: 1.1.0
+    versionCode: 4
+    commit: v1.1.0
+    subdir: android/app
+    submodules: true
+    sudo:
+      - sysctl fs.inotify.max_user_watches=524288
+      - curl -Lo node.tar.xz https://nodejs.org/dist/v14.17.5/node-v14.17.5-linux-x64.tar.xz
+      - echo "2d759de07a50cd7f75bd73d67e97b0d0e095ee3c413efac7d1b3d1e84ed76fff node.tar.xz"
+        | sha256sum -c -
+      - tar xJf node.tar.xz
+      - cp -a node-v14.17.5-linux-x64/. /usr/local/
+      - npm -g install yarn
+    gradle:
+      - yes
+    srclibs:
+      - react-native-reanimated@2.2.0
+    prebuild:
+      - echo -e '\norg.gradle.jvmargs=-Xmx4g -XX:MaxPermSize=4g' >> ../gradle.properties
+      - echo -e "android { packagingOptions { pickFirst 'lib/**/*.so' } }" >> build.gradle
+      - cd ../..
+      - mkdir .yarncache
+      - yarn install --cache-folder ./.yarncache
+      - rm -rf .yarncache
+      - cd $$react-native-reanimated$$
+      - echo -e "android { ndkVersion '21.4.7075529' }" >> build.gradle
+      - yarn add react-native@0.64.1
+    scanignore:
+      - android/build.gradle
+      - node_modules/jsc-android
+      - node_modules/hermes-engine
+      - node_modules/react-native/android/com/facebook/react/react-native/*/
+      - node_modules/react-native-safe-area-context/android/build.gradle
+      - node_modules/react-native-screens/android/build.gradle
+      - node_modules/react-native-webview/android/build.gradle
+      - node_modules/react-native/template/android/build.gradle
+      - node_modules/react-native-image-colors/android/build.gradle
+      - node_modules/react-native-track-player/android/build.gradle
+      - node_modules/react-native-vector-icons/android/build.gradle
+      - node_modules/@react-native-async-storage/async-storage/android/build.gradle
+      - node_modules/@react-native-community/masked-view/android/build.gradle
+      - node_modules/@react-native-community/netinfo/android/build.gradle
+    scandelete:
+      - node_modules
+      - submodules
+    build:
+      - ../../scripts/prepare-exoplayer-ffmpeg.sh
+      - pushd $$react-native-reanimated$$
+      - FOR_HERMES=True gradle :assembleRelease
+      - popd
+      - mv $$react-native-reanimated$$/build/outputs/aar/android-release.aar 
+        ../../node_modules/react-native-reanimated/android/react-native-reanimated-64-hermes.aar
+    ndk: r21e
+
+  - versionName: 1.1.1
+    versionCode: 5
+    commit: 336e106e0152a479490a6c619fc0ee53461a2cd8
+    subdir: android/app
+    submodules: true
+    sudo:
+      - sysctl fs.inotify.max_user_watches=524288
+      - curl -Lo node.tar.xz https://nodejs.org/dist/v14.17.5/node-v14.17.5-linux-x64.tar.xz
+      - echo "2d759de07a50cd7f75bd73d67e97b0d0e095ee3c413efac7d1b3d1e84ed76fff node.tar.xz"
+        | sha256sum -c -
+      - tar xJf node.tar.xz
+      - cp -a node-v14.17.5-linux-x64/. /usr/local/
+      - npm -g install yarn
+    gradle:
+      - yes
+    srclibs:
+      - react-native-reanimated@2.2.0
+    prebuild:
+      - echo -e '\norg.gradle.jvmargs=-Xmx4g -XX:MaxPermSize=4g' >> ../gradle.properties
+      - echo -e "android { packagingOptions { pickFirst 'lib/**/*.so' } }" >> build.gradle
+      - cd ../..
+      - mkdir .yarncache
+      - yarn install --cache-folder ./.yarncache
+      - rm -rf .yarncache
+      - cd $$react-native-reanimated$$
+      - echo -e "android { ndkVersion '21.4.7075529' }" >> build.gradle
+      - yarn add react-native@0.64.1
+    scanignore:
+      - android/build.gradle
+      - node_modules/jsc-android
+      - node_modules/hermes-engine
+      - node_modules/react-native/android/com/facebook/react/react-native/*/
+      - node_modules/react-native-safe-area-context/android/build.gradle
+      - node_modules/react-native-screens/android/build.gradle
+      - node_modules/react-native-webview/android/build.gradle
+      - node_modules/react-native/template/android/build.gradle
+      - node_modules/react-native-image-colors/android/build.gradle
+      - node_modules/react-native-track-player/android/build.gradle
+      - node_modules/react-native-vector-icons/android/build.gradle
+      - node_modules/@react-native-async-storage/async-storage/android/build.gradle
+      - node_modules/@react-native-community/masked-view/android/build.gradle
+      - node_modules/@react-native-community/netinfo/android/build.gradle
+    scandelete:
+      - node_modules
+      - submodules
+    build:
+      - ../../scripts/prepare-exoplayer-ffmpeg.sh
+      - pushd $$react-native-reanimated$$
+      - FOR_HERMES=True gradle :assembleRelease
+      - popd
+      - mv $$react-native-reanimated$$/build/outputs/aar/android-release.aar 
+        ../../node_modules/react-native-reanimated/android/react-native-reanimated-64-hermes.aar
+    ndk: r21e
+
+  - versionName: 1.1.3
+    versionCode: 7
+    commit: 5a2ab98af55764c0ef4c73d2640a2d8c5c3b0609
+    subdir: android/app
+    submodules: true
+    sudo:
+      - sysctl fs.inotify.max_user_watches=524288
+      - curl -Lo node.tar.xz https://nodejs.org/dist/v14.17.5/node-v14.17.5-linux-x64.tar.xz
+      - echo "2d759de07a50cd7f75bd73d67e97b0d0e095ee3c413efac7d1b3d1e84ed76fff node.tar.xz"
+        | sha256sum -c -
+      - tar xJf node.tar.xz
+      - cp -a node-v14.17.5-linux-x64/. /usr/local/
+      - npm -g install yarn
+      - apt-get update
+      - apt-get install -y wget
+      - apt-get install -y openjdk-11-jdk-headless
+      - update-alternatives --auto java
+    gradle:
+      - yes
+    srclibs:
+      - react-native-reanimated@2.3.1
+    prebuild:
+      - echo -e '\norg.gradle.jvmargs=-Xmx4g -XX:MaxPermSize=4g' >> ../gradle.properties
+      - echo -e "android { packagingOptions { pickFirst 'lib/**/*.so' } }" >> build.gradle
+      - cd ../..
+      - mkdir .yarncache
+      - yarn install --network-concurrency 1 --cache-folder ./.yarncache
+      - rm -rf .yarncache
+      - cd $$react-native-reanimated$$
+      - echo -e "android { ndkVersion '21.4.7075529' }" >> build.gradle
+      - yarn add react-native@0.67.1
+    scanignore:
+      - android/build.gradle
+      - node_modules/jsc-android
+      - node_modules/hermes-engine
+      - node_modules/react-native/android/com/facebook/react/react-native/*/
+      - node_modules/react-native-safe-area-context/android/build.gradle
+      - node_modules/react-native-screens/android/build.gradle
+      - node_modules/react-native-webview/android/build.gradle
+      - node_modules/react-native/template/android/build.gradle
+      - node_modules/react-native-image-colors/android/build.gradle
+      - node_modules/react-native-get-random-values/android/build.gradle
+      - node_modules/react-native-track-player/android/build.gradle
+      - node_modules/react-native-vector-icons/android/build.gradle
+      - node_modules/@react-native-async-storage/async-storage/android/build.gradle
+      - node_modules/@react-native-community/masked-view/android/build.gradle
+      - node_modules/@react-native-community/netinfo/android/build.gradle
+    scandelete:
+      - node_modules
+      - submodules
+    build:
+      - ../../scripts/prepare-exoplayer-ffmpeg.sh
+      - pushd $$react-native-reanimated$$
+      - FOR_HERMES=True gradle :assembleRelease
+      - popd
+      - mv $$react-native-reanimated$$/build/outputs/aar/android-release.aar 
+        ../../node_modules/react-native-reanimated/android/react-native-reanimated-67-hermes.aar
+      - pushd $$react-native-reanimated$$
+      - gradle :assembleRelease
+      - popd
+      - mv $$react-native-reanimated$$/build/outputs/aar/android-release.aar 
+        ../../node_modules/react-native-reanimated/android/react-native-reanimated-67-jsc.aar
+    ndk: r21e
+
+  - versionName: 1.2.0
+    versionCode: 8
+    commit: 4905f75564bf8f6b96597a91d3d8f39b1551a56e
+    subdir: android/app
+    submodules: true
+    sudo:
+      - sysctl fs.inotify.max_user_watches=524288
+      - curl -Lo node.tar.xz https://nodejs.org/dist/v14.17.5/node-v14.17.5-linux-x64.tar.xz
+      - echo "2d759de07a50cd7f75bd73d67e97b0d0e095ee3c413efac7d1b3d1e84ed76fff node.tar.xz"
+        | sha256sum -c -
+      - tar xJf node.tar.xz --strip-components=1 -C /usr/local/
+      - npm -g install yarn
+      - apt-get update
+      - apt-get install -y openjdk-11-jdk-headless
+      - update-alternatives --auto java
+    gradle:
+      - yes
+    srclibs:
+      - react-native-reanimated@2.3.1
+    prebuild:
+      - echo -e '\norg.gradle.jvmargs=-Xmx4g -XX:MaxPermSize=4g' >> ../gradle.properties
+      - echo -e "android { packagingOptions { pickFirst 'lib/**/*.so' } }" >> build.gradle
+      - cd ../..
+      - mkdir .yarncache
+      - yarn install --network-concurrency 1 --cache-folder ./.yarncache
+      - rm -rf .yarncache
+      - cd $$react-native-reanimated$$
+      - echo -e "android { ndkVersion '21.4.7075529' }" >> build.gradle
+      - yarn add react-native@0.67.4
+    scanignore:
+      - android/build.gradle
+      - node_modules/jsc-android
+      - node_modules/hermes-engine
+      - node_modules/react-native/android/com/facebook/react/react-native/*/
+      - node_modules/react-native-safe-area-context/android/build.gradle
+      - node_modules/react-native-screens/android/build.gradle
+      - node_modules/react-native-webview/android/build.gradle
+      - node_modules/react-native/template/android/build.gradle
+      - node_modules/react-native-image-colors/android/build.gradle
+      - node_modules/react-native-blob-util/android/build.gradle
+      - node_modules/react-native-track-player/android/build.gradle
+      - node_modules/react-native-vector-icons/android/build.gradle
+      - node_modules/@react-native-async-storage/async-storage/android/build.gradle
+      - node_modules/@react-native-community/masked-view/android/build.gradle
+      - node_modules/@react-native-community/netinfo/android/build.gradle
+    scandelete:
+      - node_modules
+      - submodules
+    build:
+      - ../../scripts/prepare-exoplayer-ffmpeg.sh
+      - pushd $$react-native-reanimated$$
+      - FOR_HERMES=True gradle :assembleRelease
+      - popd
+      - mv $$react-native-reanimated$$/build/outputs/aar/android-release.aar 
+        ../../node_modules/react-native-reanimated/android/react-native-reanimated-67-hermes.aar
+      - pushd $$react-native-reanimated$$
+      - gradle :assembleRelease
+      - popd
+      - mv $$react-native-reanimated$$/build/outputs/aar/android-release.aar 
+        ../../node_modules/react-native-reanimated/android/react-native-reanimated-67-jsc.aar
+    ndk: r21e
+
+  - versionName: 1.3.0
+    versionCode: 9
+    commit: 2bf3e8853de705bb49aa4175b1ad5a9b5bb431b2
+    subdir: android/app
+    submodules: true
+    sudo:
+      - sysctl fs.inotify.max_user_watches=524288
+      - curl -Lo node.tar.xz https://nodejs.org/dist/v14.17.5/node-v14.17.5-linux-x64.tar.xz
+      - echo "2d759de07a50cd7f75bd73d67e97b0d0e095ee3c413efac7d1b3d1e84ed76fff node.tar.xz"
+        | sha256sum -c -
+      - tar xJf node.tar.xz --strip-components=1 -C /usr/local/
+      - npm -g install yarn
+      - apt-get update
+      - apt-get install -y openjdk-11-jdk-headless
+      - update-alternatives --auto java
+    gradle:
+      - yes
+    srclibs:
+      - react-native-reanimated@2.3.1
+    prebuild:
+      - echo -e '\norg.gradle.jvmargs=-Xmx4g -XX:MaxPermSize=4g' >> ../gradle.properties
+      - echo -e "android { packagingOptions { pickFirst 'lib/**/*.so' } }" >> build.gradle
+      - cd ../..
+      - mkdir .yarncache
+      - yarn install --network-concurrency 1 --cache-folder ./.yarncache
+      - rm -rf .yarncache
+      - cd $$react-native-reanimated$$
+      - echo -e "android { ndkVersion '21.4.7075529' }" >> build.gradle
+      - yarn add react-native@0.67.4
+    scanignore:
+      - android/build.gradle
+      - node_modules/jsc-android
+      - node_modules/hermes-engine
+      - node_modules/react-native/android/com/facebook/react/react-native/*/
+      - node_modules/react-native-safe-area-context/android/build.gradle
+      - node_modules/react-native-screens/android/build.gradle
+      - node_modules/react-native-webview/android/build.gradle
+      - node_modules/react-native/template/android/build.gradle
+      - node_modules/react-native-image-colors/android/build.gradle
+      - node_modules/react-native-blob-util/android/build.gradle
+      - node_modules/react-native-localize/android/build.gradle
+      - node_modules/react-native-track-player/android/build.gradle
+      - node_modules/react-native-vector-icons/android/build.gradle
+      - node_modules/@react-native-async-storage/async-storage/android/build.gradle
+      - node_modules/@react-native-community/masked-view/android/build.gradle
+      - node_modules/@react-native-community/netinfo/android/build.gradle
+    scandelete:
+      - node_modules
+      - submodules
+    build:
+      - ../../scripts/prepare-exoplayer-ffmpeg.sh
+      - pushd $$react-native-reanimated$$
+      - FOR_HERMES=True gradle :assembleRelease
+      - popd
+      - mv $$react-native-reanimated$$/build/outputs/aar/android-release.aar 
+        ../../node_modules/react-native-reanimated/android/react-native-reanimated-67-hermes.aar
+      - pushd $$react-native-reanimated$$
+      - gradle :assembleRelease
+      - popd
+      - mv $$react-native-reanimated$$/build/outputs/aar/android-release.aar 
+        ../../node_modules/react-native-reanimated/android/react-native-reanimated-67-jsc.aar
+    ndk: r21e
+
+  - versionName: 3.0.0
+    versionCode: 13
+    commit: v3.0.0
+    subdir: app
+    gradle:
+      - yes
+
+AutoUpdateMode: Version
+UpdateCheckMode: Tags
+CurrentVersion: 3.0.0
+CurrentVersionCode: 13