# CortexOS — Private AI journal, mood diary > Private AI journal, mood diary (iPhone/iPad app by Orlin Ralinov Martinov.) - Source: https://appshunter.io/ios/app/cortexos/id6759070325 (this page in markdown: same URL + `.md`) - Developer: [Orlin Ralinov Martinov](https://appshunter.io/developer/1876655175) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17.0 · 32 MB - Languages: American English - Released: 2026-03-22 - Data updated: 2026-08-23 - User reviews in markdown: https://appshunter.io/ios/app/cortexos/id6759070325/reviews.md ## What is CortexOS? CortexOS is the journal that learns who you are. Write or speak. CortexOS listens, understands your emotions, and gives you something no other journal can. Everything runs on your device. No cloud. No data harvesting. No one reads your words. Ever. EU AI Act compliant. YOUR AI GETS SMARTER OVER TIME Most journaling apps treat every entry like the first. CortexOS builds a private Psyche layer: a living picture of your patterns, your people, and your growth. Now in its second generation, it ages like real memory: what keeps proving true grows stronger, what you've outgrown quietly fades. IT REMEMBERS WHAT MATTERS Mention something in a reflection and CortexOS can recall the moment you wrote about it months ago. Your journal becomes a memory that works for you. IT UNDERSTANDS THE MOMENT YOU'RE IN A job loss is not a bad mood. A new baby is not just "tired." CortexOS recognizes over 100 life situations and meets each one the way a thoughtful friend would: knowing what helps, and what never to say. IT LEARNS WHAT LIFTS YOU It notices what weighs on you and what reliably helps. Rate your sessions and it learns your taste. Your AI, shaped by you. PULSE Tap a mood, write a sentence, save. A 10-second check-in for busy days. Counts in every mood trend, never uses up your monthly free entries. VENT & BURN A space for the heavy stuff. Speak or type. Audio is securely wiped after transcription. When you're done, the entry burns. Nothing left, anywhere. DEEP ANALYSIS ON EVERY ENTRY After you write, an on-device LLM reads between the lines: emotional patterns, cognitive habits, growth you might not see yourself. Entries save instantly. BEHAVIORAL PATTERNS Rumination, self-compassion, stress responses, growth. Trend chips show what's emerging, fading, stable. Nothing diagnosed. Just named, so you can notice it yourself. SELF-AWARENESS CARD What CortexOS has learned about you: themes, tendencies, what weighs on you, what helps. Written entirely by the on-device AI. Visible only to you. AI REFLECTIONS Talk through what's on your mind by text or voice. The AI remembers your themes, replies faster than ever, and asks questions that take you deeper. Never judged, never uploaded. VOICE JOURNALING Speak instead of type. On-device transcription catches every word, even long, winding entries. No internet needed. INSIGHTS & PATTERNS Track 20+ emotions over time. Spot mood trends, triggers, and the connections between life events and how you feel. CHAPTERS Every week becomes a chapter in your story. Auto-titled, themed, and summarized by AI. MIND WRAPPED A shareable card deck at entry milestones and at year-end, every card stamped "0 bytes sent anywhere". YEAR IN REVIEW Your year, told from your own words: your emotional arc, your chapters, the growth you might have missed. Built on-device. SMART NOTIFICATIONS Prompts drawn from what you've been writing about. Like a quiet tap from someone who knows you. ENTRY ECHOES & GHOST TEXT Old entries resurface to remind you what you've already told yourself. A gentle prompt appears when the page sits empty. THERAPIST REPORTS A shareable PDF of your patterns and trends. No journal content included. Just what your therapist actually needs. PRIVATE BY DESIGN - AES-256-GCM encryption on every entry - Even the AI's memory is encrypted at rest - Zero-knowledge cloud backup (we can't read your data) - On-device AI. Nothing sent to servers. - Optional Deep Recall language pack: sharper memory, still 100% on your phone - Screen recording and mirroring blocked at the system level - No email, no password. Recovery phrase only. Face ID / Touch ID. - No tracking. No ads. No exceptions. Built by a solo developer in Malta, Europe. No investors, no data deals. A journal that is yours alone. AI Disclosure: https://cortexos.app/ai-disclosure Trust Center: https://cortexos.app/trust Privacy Policy: https://cortexos.app/privacy Terms of Use: https://cortexos.app/terms Your Mind, Encrypted. ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium Monthly | $7.99 | per month | | Premium Yearly | $49.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime Access | $99.99 | one-time | ## Version history (last 5 releases) ### 1.7.0 — 2026-08-17 Your AI grew up. This is the biggest update we've ever shipped, and almost all of it happened inside your AI's head. IT REMEMBERS NOW. Bring something up in a reflection and CortexOS can connect it to what you wrote weeks or months ago, gently, like a friend who was actually listening. Your past entries stop being archive and start being memory. IT UNDERSTANDS WHAT'S HAPPENING TO YOU. A breakup, a layoff, a health scare, a new baby, a fresh city. CortexOS now recognizes over 100 life situations and responds with the care each one deserves: what to ask, what helps, and just as importantly, what not to say. THE PSYCHE LAYER, GENERATION TWO. The private picture CortexOS keeps of your patterns now ages like real memory: what keeps proving true grows stronger, what you've outgrown quietly fades. It also learned two things it never knew before: what tends to weigh on you, and what reliably lifts you. IT LEARNS FROM YOU. Rate your reflection sessions with a thumbs up or down and your AI takes notes. It learns how you like conversations opened and what a good summary sounds like in your life. Every week it fits you a little better. IT GOT FASTER. Reflection replies now come noticeably quicker, especially mid-conversation. Less waiting, more talking. VOICE JOURNALING CAPTURES EVERYTHING. Long, winding voice entry with pauses while you gather your thoughts? Every word lands now, start to finish. NEW: DEEP RECALL. An optional switch in Settings that gives your AI's memory a sharper engine, powered by a language pack that downloads once and never phones home. YOUR JOURNAL CAN MOVE WITH YOU. We laid the encrypted groundwork for carrying your journal across devices with nothing but your recovery phrase. Zero-knowledge, end to end: we couldn't peek even if we wanted to. AND THE POLISH: summaries that speak directly to you, sessions that always show what the AI noticed, waiting screens that appear the instant you need them, milestone celebrations that feel like milestones, and a long list of small fixes you'll feel more than see. All of it on your device. None of it in a cloud. That part never changes. Your Mind, Encrypted. ### 1.6.0 — 2026-06-30 This update is about trust and control: an AI that handles the hard moments with more care, and gives you more say in what it remembers. Tell it when it's wrong If CortexOS ever reads you wrong, say so during a reflection and it lets that read go for good, everywhere in the app. You can see and clear everything you've corrected in Settings. Set topics off-limits Not ready to dig into something? Tell the AI to leave a topic alone and it won't raise it again, in reflections, analysis, or anywhere else. It's listed in Settings whenever you want to change your mind. Reflections that stay with the moment Deep Analysis and reflections now focus on what you actually wrote, instead of pulling your whole history into every entry. When a past entry genuinely connects to today, it still surfaces as a throwback. The big-picture view of your patterns stays on your Self-Awareness card. Gentler on the hard days On a heavy day, CortexOS holds back the streaks, milestones, and upbeat nudges that don't fit the moment. And if you're going through something dark, it steps back from analysis and quietly points you toward real support. As always, everything stays on your device, encrypted. Your words never leave your phone. ### 1.5.3 — 2026-06-23 This one is about staying out of your way. • Vent & Burn now saves instantly when you choose to keep what you wrote. No pause, no waiting on the AI to finish. • Coming back into the app after Face ID or your passphrase is smooth again, with no hang on unlock. • Voice journaling now always transcribes right on your device, on every path. Your voice never leaves your phone. As always, everything you write stays encrypted on your device. We can't read it, and we never will. ### 1.5.2 — 2026-06-19 Faster cold launch, quieter download banner, and small info buttons on every main feature. • Cold launch reserves the first few seconds for you. The on-device AI warms quietly in the background about ten seconds later, ready by the time you need it instead of competing with the moment you wanted to write. • The phantom download banner is gone. If you've ever wondered why CortexOS seemed to be downloading the AI model every time you opened the app, it wasn't, it was just warming from your phone's storage. The banner now only shows the one time the model actually downloads, on first install. • A small info button now appears next to your Self-Awareness card, Pulse, Vent & Burn, Chapters, Deep Analysis, and several other features. Tap it for a short plain-language read on how each one actually works. Each links to a deeper article on cortexos.app if you want the longer version. ### 1.5.1 — 2026-06-18 1. Silky Save, Silky Scroll (IMPROVED): Instant save, background AI 2. Reflection Summaries Speak to You (IMPROVED: Second-person voice 3. Quieter Self-Awareness Updates (IMPROVED): Silent foreground/background polish 4. Bug fixes, and other improvements ## More apps by Orlin Ralinov Martinov - [Replace-It](https://appshunter.io/ios/app/replace-it/id6767914274) All apps by Orlin Ralinov Martinov: https://appshunter.io/developer/1876655175 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*