Source: https://seerepo.com/compare/OWASP/mastg/vs/thunderbird/thunderbird-android
Markdown source: https://seerepo.com/compare/OWASP/mastg/vs/thunderbird/thunderbird-android.md
Description: mastg and thunderbird-android share 4 technologies: activity-compose, core-ktx, lifecycle-runtime-ktx, and material3. Both are written in Kotlin.

# mastg vs thunderbird-android

mastg and thunderbird-android share 4 technologies: activity-compose, core-ktx, lifecycle-runtime-ktx, and material3. Both are written in Kotlin.

- [OWASP/mastg](https://seerepo.com/r/OWASP/mastg): The OWASP Mobile Application Security Testing Guide (MASTG) is a comprehensive manual for mobile app security testing and reverse engineering. It describes technical processes for verifying the OWASP Mobile Security Weakness Enumeration (MASWE) weaknesses, which are in alignment with the OWASP MASVS.
- [thunderbird/thunderbird-android](https://seerepo.com/r/thunderbird/thunderbird-android): Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)

## What they share and what sets them apart

- In common: activity-compose, core-ktx, lifecycle-runtime-ktx, material3
- Only in mastg: ui, ui-graphics
- Only in thunderbird-android: Jetpack Compose, androidx.activity:activity, androidx.navigationevent:navigationevent, datastore-preferences, androidx.datastore:datastore, koin-bom, koin-compose, koin-compose-viewmodel, koin-core, koin-core-viewmodel, lifecycle-livedata-ktx, lifecycle-process, lifecycle-runtime-compose, lifecycle-viewmodel, lifecycle-viewmodel-compose, lifecycle-viewmodel-savedstate, navigation-compose, org.jetbrains.compose.runtime:runtime, androidx.core:core, adaptive, core-splashscreen, fragment-compose, glance-material3, graphics-path, org.jetbrains.compose.components:components-resources, Google, androidx.fragment:fragment, androidx.appcompat:appcompat, androidx.recyclerview:recyclerview, androidx.preference:preference, androidx.coordinatorlayout:coordinatorlayout, Glance, de.hdodenhof:circleimageview, androidx.constraintlayout:constraintlayout, androidx.camera:camera-view, androidx.glance:glance-preview, androidx.swiperefreshlayout:swiperefreshlayout, androidx.window:window, material-icons-extended, net.openid:appauth, androidx.biometric:biometric, com.github.bumptech.glide:glide, jdom2, jinja2, org.apache.james:apache-mime4j-dom, org.jsoup:jsoup, com.fleeksoft.ksoup:ksoup, com.google.zxing:core, json-schema-validator, jsonschema, io.ktor:ktor-client-logging, logback-classic, timber

## Side by side

| | mastg | thunderbird-android |
|---|---|---|
| Size | 17,925 lines written, 101 code files | 351,476 lines written, 2,919 code files |
| Who writes it | 1.9% of its commits signed by AI. With GitHub Copilot and Claude Code | 0% of its commits signed by AI |
| Activity | Last push November 7, 2026, 8,693 commits, 13,325 stars | Last push November 6, 2026, 17,173 commits, 14,195 stars |
| Tests | 135 test files. 6.9% of its code files have a test that imports them | 808 test files. 44.2% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, mastg or thunderbird-android?

thunderbird-android, with 351,476 lines written; mastg has 17,925.

The proof: [thunderbird/thunderbird-android's code at commit 467787f](https://github.com/thunderbird/thunderbird-android/tree/467787fcc43e560aae2d670c7cfa5f9036ca486d)

### Which has more GitHub stars, mastg or thunderbird-android?

thunderbird-android, with 14,195 stars; mastg has 13,325.

The proof: [thunderbird/thunderbird-android on GitHub](https://github.com/thunderbird/thunderbird-android)

### Which has more tests, mastg or thunderbird-android?

thunderbird-android, with 808 test files; mastg has 135.

The proof: [thunderbird/thunderbird-android's code at commit 467787f](https://github.com/thunderbird/thunderbird-android/tree/467787fcc43e560aae2d670c7cfa5f9036ca486d)

### Which was updated more recently, mastg or thunderbird-android?

mastg: its last push was on November 7, 2026, and thunderbird-android's on November 6, 2026.

The proof: [OWASP/mastg's commits on GitHub](https://github.com/OWASP/mastg/commits)

### Which has more commits signed by AI, mastg or thunderbird-android?

mastg: an AI signed 1.9% of its commits, with GitHub Copilot and Claude Code.

The proof: [the commits each tool signed in OWASP/mastg](https://seerepo.com/r/OWASP/mastg/ai)

## Sources

- OWASP/mastg: Read on November 10, 2026, at commit e818303 (https://github.com/OWASP/mastg/tree/e8183038d7a88c1ac962732d6e3f6e7f40a0251c)
- thunderbird/thunderbird-android: Read on November 9, 2026, at commit 467787f (https://github.com/thunderbird/thunderbird-android/tree/467787fcc43e560aae2d670c7cfa5f9036ca486d)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.