TrueCrypt is not available for Android but there are some alternatives with similar functionality. The best open source Android alternative is Cryptomator. If that doesn't suit you, our users have ranked more than 100 alternatives to TrueCrypt and nine of them are open source and available for Android so hopefully you can find a suitable replacement. Other interesting open source Android alternatives to TrueCrypt are DroidFS, EDS (Encrypted Data Store), Tella and Luks manager.
Cryptomator provides transparent, client-side encryption for your cloud. Protect your documents from unauthorized access. Cryptomator is free and open source software, so you can rest assured there are no backdoors.
DroidFS is an alternative way to use encrypted overlay filesystems on Android that uses its own internal file explorer instead of mounting virtual volumes. It currently only works with gocryptfs but support for CryFS could be added in the future.
With EDS (Encrypted Data Store) you can store your files in the encrypted container to prevent unauthorized access to sensitive information.
Tella is a mobile app designed to protect human rights defenders, advocates, and journalists by encrypting and hiding their sensitive data and safely uploading it to their organization's server.
LUKS Manager provides on-the-fly encryption (AES by default) to virtual folders on Android devices.
Welcome to ZenCrypt. With this app, you can safely encrypt files, using a secure and efficient library.
S.S.E. File Encryptor is a cross-platform encrypter/decrypter of files and folders.
Used for encrypting and decrypting files with 256 bit AES algorithm.
Open-source backup software using client-side zero-knowledge encryption ensures data privacy, supports multiple object storage providers, preserves folders, detects duplicates locally, enables direct-to-cloud uploads, avoids tracking, and exposes only encrypted metadata.
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Truecrypt is no more. Try the more updated and secure VeraCrypt. Both of those are for making an encrypted container into which files are placed. Cryptomator is different: it encrypts file-by-file (makes an encrypted version of each file). This enables you to sync/backup encrypted versions of your files to the cloud, which the TrueCrypt/VeraCrypt approach doesn't. Cryptomator thus fulfills a different need than does TC/VC.