Si4Keyboard app icon

Apps Like Si4Keyboard for iPhone and iPad

Secure input with local encryption

Si4Key provides local encryption for keystrokes, ensuring input stays on the device. It includes one-tap digital signature for secure authentication. Offers offline key management for secure identity verification without internet dependency.

by 文焕 陈★ 0.00 ratingsUtilities$0.99Data updated 2026-09-06
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Ranked alternatives

Showing 641–660 of 1,000 ranked alternatives.

  5. FEITIAN Authenticator app icon

    FEITIAN Authenticator

    FEITIAN Technologies Co.,Ltd.

    Burn secret seeds and authenticate identity

    Manage digital identities with secure authentication. Burn secret seeds for encryption. Integrate with iePassFIDO for identity verification. Set up and verify authentication credentials. Protect sensitive data with cryptographic keys.

    ★ 1.52 ratingsUtilitiesFreeData updated 2026-09-06
    App details
  9. AC Method for Factoring app icon

    AC Method for Factoring

    Glindemann, Sennoun, Langer GbR

    Solve quadratics with AC

    Solve quadratic equations using the AC . Enter values for a, b, and c. Convert trinomials into binomial products. View step-by-step solutions. Store previous calculations in history. Support for positive and negative numbers and decimals.

    ★ 5.01 ratingsEducationFreeData updated 2026-09-06
    App details
  15. Notifs Grapevine app icon

    Notifs Grapevine

    Jeffrey Palin

    Monitor posts from Mastodon and Bluesky profiles

    Monitor Mastodon and Bluesky profiles by entering URLs. Receive content notifications with customizable banners. Integrate with system tray for quick access. Store data locally to ensure privacy.

    ★ 5.02 ratingsUtilities$0.99Data updated 2026-09-06
    App details
  16. Upperity ID app icon

    Upperity ID

    IdPlizz Inc.

    Verify identity with blockchain ID

    Manage digital identities with blockchain-based verification. Create and verify unique identifiers using IdNFT™ technology. Securely authenticate users and protect identity ownership.

    ★ 5.01 ratingsBusinessFreeData updated 2026-09-06
    App details
  17. LunaOTP - Authenticator app icon

    LunaOTP - Authenticator

    Reza Moallemi

    Securely generate and store 2FA codes

    Securely generate and store two-factor authentication codes using Apple Keychain. View and manage 2FA secrets for multiple accounts. Share codes via QR code or text. Disable or delete accounts remotely.

    ★ 5.02 ratingsUtilities$4.99Data updated 2026-09-06
    App details
  19. PassDirector - secure database app icon

    PassDirector - secure database

    MacMedia

    Store and sensitive data with encryption

    Store and manage sensitive data like bank accounts, credit cards, and passwords in an encrypted . Access information securely with a password. Sync data between Mac devices. Encrypt data using AES-256 with macOS libraries.

    ★ 0.00 ratingsProductivity$19.99Data updated 2026-09-08
    App details

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.