Trillian

Download Trillian APK

com.ceruleanstudios.trillian.android · by Cerulean Studios, LLC

Business Cerulean Studios, LLC
Latest Version: 6.6.0.55 • Updated: Mar 13, 2026
Download Trillian APK
v6.6.0.55 · APK

About Trillian

Trillian is modern and secure messaging for people, business and healthcare. For over 20 years, Trillian has been helping people stay connected. Today's Trillian brings secure (and HIPAA-compliant) messaging, audio, and video calls to healthcare professionals and businesses of all sizes. And true to our roots, if you're just looking for free personal instant messaging, we can help with that too! • FOR BUSINESSES: Does your business still rely on texting or cumbersome email chains? Let Trillian's modern and secure business instant messaging modernize employee communication without compromising on security or control. • FOR HEALTHCARE: Your healthcare organization needs secure instant messaging, and Trillian's HIPAA-compliant secure messaging platform has you covered. We help teams of all sizes improve clinical communication without breaking the bank. • FOR INDIVIDUALS: Stay in touch with family and friends without compromising your privacy. Your unique Trillian username can be used to send unlimited messages free of charge over your existing data plan and/or WiFi and place and receive voice calls. Whether you're looking to empower secure employee instant messaging or just to keep in touch with family and friends, Trillian can help. Thanks for checking us out!

All Trillian APK versions

6.6.0.55
May 28, 2026
1 variant
6.6.0.57
May 16, 2026
1 variant
6.6.0.60
Apr 26, 2026
1 variant
6.6.0.61
Apr 22, 2026
1 variant

Frequently Asked Questions

Yes. Every Trillian APK on APK.now is automatically scanned and the cryptographic signature is verified against the original publisher's certificate (Cerulean Studios, LLC). Files that fail verification are removed before they ever reach the catalog.

Enable 'Install from unknown sources' for your browser (or the file manager you use to open the APK) under Settings → Apps → Special access. Tap the downloaded Trillian APK, confirm the prompts, and Android installs it just like any app from the Play Store.

The latest Trillian version available on APK.now is 6.6.0.55. We track new releases from Cerulean Studios, LLC continuously and add them to the catalog as soon as they pass verification.

Yes — every Trillian APK and every version on APK.now is free to download. We never gate downloads behind sign-up, surveys, or paywalls.

APK.now keeps a full archive of every Trillian release, including older versions that the Play Store has already replaced. The APKs work on devices without Google Play Services (Huawei, GrapheneOS, Amazon Fire) and are signature-verified so you can be confident the file is genuine.