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PGPony

OpenPGP encryption with hardware security keys and password-store support
New in version 4.6.2
New languages: Simplified Chinese, Ukrainian and Turkish. They are mostly machine translations, so corrections are welcome at github.com/norsehorse-dev/PGPony-Translations. Text and error messages that stayed in English in every language are now translated, and German, Spanish, French, Japanese, Portuguese and Russian gain the strings they were missing. Korean gains more of its volunteer translation but stays out of the language picker until it is complete.
PGPony is an OpenPGP app for Android. Encrypt, decrypt, sign, and verify messages and files, manage your keyring, and use a hardware security key over NFC, all on device.

Features:

- Encrypt, decrypt, sign, and verify text and files
- Post-quantum encryption: ML-KEM-768 + X25519 (Kyber) composite keys, in both the IETF draft (v6) and LibrePGP / GnuPG 2.5 (v5) formats
- OpenPGP provider service: use PGPony as the crypto engine for Thunderbird for Android, K-9 Mail, and Password Store (OpenKeychain-compatible API)
- Generate modern keys, including RFC 9580 (OpenPGP v6) Ed25519 and X25519, with Argon2id passphrase protection
- Hardware security keys over NFC, including YubiKey 5 NFC and Token2, with on-card key generation, decrypt, sign, PIN management, and factory reset
- Read your password-store (pass) entries, including those protected by a hardware key
- Encrypted keyring backup and restore, including OpenKeychain backup import
- PGP/MIME email: decrypt messages with attachments, compose encrypted .eml
- Key discovery through WKD and the keys.openpgp.org verifying keyserver; optional Tor routing via Orbot
- Optional contact integration for choosing recipients
- QR import and scanning for keys
- Default signing key, biometric lock, and secure-screen protection

Post-quantum limitations:

Post-quantum OpenPGP is still being standardized, so cross-tool support is limited:

- LibrePGP-format (v5) keys interoperate with GnuPG 2.5+ today: messages encrypt and decrypt in both directions, and public keys import cleanly. GnuPG cannot yet import post-quantum PRIVATE keys from any app — it stores them in a proprietary internal format.
- IETF-format (v6) keys implement draft-ietf-openpgp-pqc and are verified against the draft's official test vectors, but current Sequoia (sq) preview builds implement a different draft revision and cannot read them yet, and GnuPG does not support this format at all.
- Classical keys (RSA, Ed25519, v4 and v6) are unaffected.

PGPony does not use accounts, ads, analytics, or tracking. The F-Droid build contains no Google services and runs fully on de-Googled devices.

The cryptographic core is published separately as open source (PGPonyCore-Kotlin), and the full app source is available under the Apache-2.0 license.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 4.6.2 (462) suggested Added on Oct 01, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • run foreground service
      Allows the app to make use of foreground services.
    • hide other apps overlays
      This app can request that the system hides overlays originating from apps from being shown on top of it.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • control Near Field Communication
      Allows the app to communicate with Near Field Communication (NFC) tags, cards, and readers.
    • show notifications
      Allows the app to show notifications
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • com.pgpony.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 10 MiB PGP Signature | Build Log

  • New in version 4.6.1
    New since 4.5.3: SSH logins with your PGPony keys via OkcAgent in Termux. One share dialog to import, decrypt, verify, encrypt or sign. Import a key from a link. ML-DSA-87 keys. Key-server upload status and merging refresh. OpenPGP and SSH access granted per app. Security hardening from an internal review. The share menu no longer drops post-quantum recipients and imports private keys. Mail apps follow the passphrase cache duration. MTE on where supported.
  • Version 4.6.1 (461) - Added on Sep 27, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • run foreground service
      Allows the app to make use of foreground services.
    • hide other apps overlays
      This app can request that the system hides overlays originating from apps from being shown on top of it.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • control Near Field Communication
      Allows the app to communicate with Near Field Communication (NFC) tags, cards, and readers.
    • show notifications
      Allows the app to show notifications
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • com.pgpony.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 9 MiB PGP Signature | Build Log

  • New in version 4.6.0
    SSH logins with your PGPony keys through OkcAgent in Termux. One share dialog that offers what fits the text: import, decrypt, verify, encrypt or sign. Import a key from a link. ML-DSA-87 keys. Key-server upload status, out-of-date marker and merging refresh. ML-KEM subkeys on classical keys are kept through edits. Connected apps grant OpenPGP and SSH separately. Security hardening from an internal review.
  • Version 4.6.0 (460) - Added on Sep 26, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • run foreground service
      Allows the app to make use of foreground services.
    • hide other apps overlays
      This app can request that the system hides overlays originating from apps from being shown on top of it.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • control Near Field Communication
      Allows the app to communicate with Near Field Communication (NFC) tags, cards, and readers.
    • show notifications
      Allows the app to show notifications
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • com.pgpony.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 9 MiB PGP Signature | Build Log