⚠ Disclaimer
NOT RECOMMENDED FOR APPS FROM META, UBER, WHATSAPP, ANY GOOGLE APP REQUIRING AN ACCOUNT, OR ANY BANKING APP. RISK OF ACCOUNT BAN WITH CHANGED SIGNATURE.
For these apps, use Install to Device via USB or download as ZIP (uncheck merge) to preserve original signatures.
Use your own judgement to decide if an app is serious enough about security to warrant not merging. We do not take responsibility for any account bans or restrictions resulting from the use of re-signed APKs.
CortexOS is a private AI journal and mood tracker that understands how you think. Write freely in a secure, encrypted diary and let on-device AI analyze your emotions, detect patterns, and surface insights you can't see on your own. No email, no password, just a recovery phrase. Everything stays on your phone.
SMART JOURNAL WITH AI MOOD TRACKING
Most journal apps store your words. CortexOS reads between the lines. The AI detects over 20 emotions in every entry, tracks mood patterns across days and weeks, and identifies cognitive distortions like catastrophizing, black-and-white thinking, and emotional reasoning. Think of it as a mood diary that actually understands what you're feeling.
Whether you journal for anxiety, depression, stress relief, or personal growth, CortexOS gives you dat