Comparison

Corteks vs Fabius

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Corteks

Features
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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

About

Fabius

Design personalized AI agents with unique personalities, instructions, and tools. Upload documents and images to provide agents with specific knowledge for grounded answers. Collaborate with others in shared workspaces and connect to channels like Telegram.

Highlights
  • Custom AI agent design
  • Personalized agent personalities
  • Document and image knowledge integration
  • Team collaboration with roles
  • Telegram bot integration
  • Private by design, no tracking
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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 — 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. WORK AS A TEAM Invite people to your workspace, give them a role, and choose who pays. 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 — and everything with it — anytime, right from Settings.

Screenshots

Corteks4 screens
Fabius4 screens

Verdict

The call

The clearest difference is update cadence: Corteks at every 3 days against Fabius's every 9 days. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Corteks ships an update every 3 days, Fabius every 9 days. The most recent releases landed on October 31, 2026 and October 26, 2026 respectively.

Scorecard1 real difference · 8 level
Corteks versus Fabius: the parameters behind the verdict, then further details
ParameterCorteksFabius
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 days — betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better16.4
Further details — not scored
Size35 MB69 MB
Age rating17+12+
DeveloperSanad ShegemSubhi Mukbel

In-app purchases

2 purchases

Corteks

Subscriptions2
  • Corteks Pro Monthly$9.991 Month
  • Corteks Pro Yearly$79.991 Year
3 purchases

Fabius

One-time3
  • 1,400 Credits$4.99
  • 6,200 Credits$19.99
  • 17,000 Credits$49.99

Questions

Is Corteks free?
Corteks is free to download, with in-app purchases available.
Is Fabius free?
Fabius is free to download, with in-app purchases available.
Do Corteks or Fabius have ads?
Neither Corteks nor Fabius shows ads.
Which is updated more often, Corteks or Fabius?
Corteks ships an update every 3 days, and Fabius every 9 days. Most recently, Corteks was updated on October 31, 2026 and Fabius on October 26, 2026.

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