This app helps you:

- Sign apk/jar/zip files on your cell phones or tablets.
- Verify apk/jar/zip files to see if they are signed/modified.
- Manage keystores (import/export).

Pro features:

- Making your own keystore files.
- Themes.

Notes

- The app is not available in some countries. I am sorry for the inconvenience.
- Play Store *unprofessionally* limits replies to 350 characters. Sometimes I can't say thanks after a long reply. Other times I can't explain enough. In such cases I apologize. Please contact me via email if you need more information and help.