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
App detailsView in App Store

Ranked alternatives

Showing 841–860 of 1,000 ranked alternatives.

  1. GCMVPN app icon

    GCMVPN

    BaseServ Limited

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-06
    App details
  19. AEI Keyboard Note Swedish app icon

    AEI Keyboard Note Swedish

    Toshihiro Nakane

    Type with one hand, two thumbs

    Type messages quickly using one hand with a simplified layout. Input vowels with a single press and consonants with up to two presses. Two-thumb typing enhances speed. Features 13 multi-input keys with reduced key size to minimize typing errors.

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-08
    App details

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