Apps like GateKeeper Trident

Here are some great alternatives to GateKeeper Trident by Untethered Labs, Inc. :
Safetrust Wallet
Safetrust Wallet
★4.0
Vault Master - Hide Photo
Vault Master - Hide Photo
★4.5
SecureData Lock User
SecureData Lock User
★3.4
Keeper Password Manager
Keeper Password Manager
★4.5
EndpointLock
EndpointLock
★4.1
Cryptomator
Cryptomator
★3.8
AppLock PRO
AppLock PRO
★4.2
AppLock - Protect Your Privacy
AppLock - Protect Your Privacy
★3.2
AppLock Master
AppLock Master
★4.4
AppLock
AppLock
★4.2
Master Lock Vault Home
Master Lock Vault Home
★4.2
Incoming Call Lock
Incoming Call Lock
★4.3
AppLock - Time Password
AppLock - Time Password
★4.1
lock screen - smart lock
lock screen - smart lock
★4.8
Screen Lock - Time Password
Screen Lock - Time Password
★4.4
App Lock - Preventing Intruder
App Lock - Preventing Intruder
★5.0