Corteks vs Fabius
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Corteks
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Corteks is where you put a thought so you can stop holding it. Speak it, type it, or snap a photo. That is the whole job. Corteks reads what you captured, titles it, files it, and connects it to everything you have thought before. WHAT IT DOES WITH YOUR THINKING Reads every capture. A title, a one-line summary, what it is about, and the older thoughts it genuinely connects to. You never file anything yourself. Builds a graph, not a folder tree. Your thoughts cluster by what they are actually about, and you start seeing that you have been circling something for weeks. Writes your week, every Sunday. Not a step count. What you thought about, what changed, and what you keep returning to. Answers questions about your own mind. Chat is grounded in what you captured, so it points at your own words instead of inventing advice. Holds what you are working toward. Write down your objectives, focus three at a time, and Corteks reads those three closely. Three, because attention does not divide well. WHAT IT IS NOT No feed. No streaks. No badges. Nothing is public and nothing is shared, so there is nobody to perform for. It never tells you that you are behind. An objective that has gone quiet is reported as a fact, never as a failing. YOUR THOUGHTS ARE YOURS Everything is private to your account. It is used to build what the app shows you and nothing else: your graph, your readings, your weekly story, and the answers you get in chat. Export everything to your email whenever you like, in a readable file and as JSON. Delete your account and it all goes with it. CORTEKS PRO Start with a free trial. No card, and nothing is charged when you sign up. Pro covers capturing without limits, having every capture read and connected, your weekly reading, readings on your three focused objectives, and chat. After the trial, everything you already captured stays readable forever. Browsing, search, the graph, past readings and export never stop working. Corteks Pro is $9.99 per month or $79.99 per year. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Manage or cancel it any time in your Apple Account settings. Terms: https://corteks.app/terms Privacy: https://corteks.app/privacy-policy
Fabius
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Fabius lets you create your own AI agents and put them to work. DESIGN YOUR AGENTS Give each agent its own personality, instructions, model, and tools. A research assistant, a writing partner, a support bot โ you decide what each one knows and what it is allowed to do. BRING YOUR KNOWLEDGE Upload documents and images, and your agents use them to give grounded, specific answers. CONNECT YOUR CHANNELS Link a Telegram bot and your agent answers there too. PRIVATE BY DESIGN No ads, no analytics, no tracking. Your conversations belong to you, and you can delete your account โ and everything with it โ anytime, right from Settings.
Screenshots
Verdict
The clearest difference is update cadence: Corteks at every 3 days against Fabius's weekly. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Corteks sells 2 in-app purchases, starting at $9.99 per month and Fabius sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Corteks ships an update every 3 days, Fabius weekly. The most recent releases landed on October 1, 2026 and October 8, 2026 respectively.
| Parameter | Corteks | Fabius |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days โ better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 โ better | 16.4 |
| Further details โ not scored | ||
| Size | 35 MB | 68 MB |
| Age rating | 17+ | 12+ |
| Developer | Sanad Shegem | Subhi Mukbel |
In-app purchases
Corteks
- Corteks Pro Monthly$9.991 Month
- Corteks Pro Yearly$79.991 Year
Fabius
- 1,400 Credits$4.99
- 6,200 Credits$19.99
- 17,000 Credits$49.99





